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August 2015

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Don't Miss These Other Evemts, Seminars and Webinars

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New OTDR Optical Link Mapper Software

LR Telco Data Center Summit

In This Issue - (INDEX)

Click on "RETURN TO INDEX " after each section to return you to this INDEX so you can find things easier.


FOA Corporate Membership
Yokogawa Gives FOA OTDR
Best Illustration of "Total Internal Reflection"
Splice Crew Claims Record Low Loss
Norway Gets Unique Data Centre
Crossword Puzzles On Fiber Optics
Museum Uses FOA Demos On Fiber Optics
Repair Undersea Cables With "Squid" Plastic
Amazing FTTA Lab at Comstar in TN
NY Transit - an FOA School
Treasure Hunting
EXFO Offers Super Posters
OSP Construction
More on MPO Polarity - At The Fiber Level
Don't miss the interesting questions asked this month!


OLANs - Optical LANs
OTDRs - more info
OSP Civil Works  
More to read in Worth Reading and Q&A


New @ FOA  
Fiber U - free online self-study courses
Publications: FOA Textbooks, NECA/FOA 301 Installation, eBooks
More "Quickstart Guides" - OTDRs
 videos: New FOA YouTube Videos
Online Reference Guide: Many new pages 
Tech Topics: More online information
Certification: New FOA OSP Certification
FOA Schools: New schools and programs
Events: Webinars, Conferences and Shows of Interest To Fiber Techs  
Webinars: Online seminars on useful topics 
Q&A: What you are asking the FOA?
Product News - New stuff
Worth Reading: News from around the world
Download This - Good applications material online

DIG SAFE - Call 811 before you dig!


JobsCurrent openings for Cable Techs, Fiber Splicers, etc.
Also see FOA Jobs Web Page and FOA on FOA on LinkedIn
The FOA Jobs Web Page has been updated and a new page added on Using your FOA Training/Certification to Find the Right Job in Fiber Optics

Where Are The Jobs In Fiber Optics? FOA talks about all the applications for fiber optics, what jobs involve and the qualifications for the workers in the field in this YouTube video.

Join The FOA eMail Newsletter List
Want to be notified when the FOA Newsletter is updated? Sign up for the FOA eMail Newsletter. You can also sign up from your cell phone: text "FOA" to 22828 (usual text msg charges apply)

CFOT Renewals
Renew your FOA certification online - plus get a discount on the new FOA books and an extra month free. Details here.

The Archives: Past Issues.
Use these links to read past issues or use FOA's Google Custom Search to look for specific topics on our website.
1/15, 2/15, 3/15, 4/15, 5/15, 6/15, 7/15, 8/15 
1/14, 2/14, 3/14, 4/14, 5/14, 6/14, 7/14, 8/14, 9/14, 10/14, 11/14, 12/14 
1/132/13, 3/13, 4/13, 5/13, 6/13, 7/13, 8/13, 9/13, 10/13, 11/1312/13 
1/12 , 2/12, 3/12, 4/12, 6/12, 7/12, 8/12, 9/12, 10/12, 11/12, 12/12   
1/11 ,  2/11,  3/11,  4/11,  6/11, 7/11, 8/11,  9/11, 10/11, 11/11,  12/11,  
1/10 ,  2/10, 3/10,  4/10,   05/10,  07/10, 08/10,  09/10,  10/10, 11/10 
1/09 ,  2/09,  3/09, 04/09,  05/09,  07/09, 08/09, 09/09, 10/09, 11/09,  12/09
1/08 , 2/08, 3/08, 4/08, 5/08,  6/08, 7/08, 8/08, 09/0810/08, 11/08,  12/08 
12/07 , 11/07, 10/07, 09/07, 08/07, 07/07, 06/07, 05/07, 04/07, 03/07, 2/07, 1/07
12/06 , 11/06, 10/06, 09/06, 8/06, 7/06, 6/06, 5/06, 4/06, 3/06, 2/06, 1/06,
12/05 ,11/05, 10/05, 09/05, 08/05, 07/05, 6/05, 5/05, 4/05, 2/05, 01/05,
12/04 , 10/04, 9/04, 8/04, 7/04, 6/04, 5/04, 4/04, 3/04, 1/04,
12/03 , 11/03 10/03 9/03, 8/03, 7/03, 6/03, 3/03, 10/02 , 8/02, 5/02
Current Issue of FOA Newsletter

It's CFOT®  and Fiber U® The FOA CFOT® (Certified Fiber Optic Technician) and Fiber U® (the FOA online self-study program) are registered trademarks of the FOA. With over 43,000 fiber optic techs holding CFOTs (July 2013) and the CFOT being recognized worldwide as the foremost certification in fiber optics, the FOA realized the value of the CFOT and Fiber U required trademark protection. Now it's official!

FOA Guide
Want to know more about fiber optics?
Study for FOA certifications? Free Self-Study Programs are on "Fiber U®." Looking for specific information? Here's the largest technical reference on the web: The FOA Online Fiber Optic Reference Guide.

Free online self-study programs on many fiber optics and cabling topics are available at Fiber U, FOA's online web-based training website.

 FOA Reference Books
Available Printed or eBooks

The fiber book is available in Spanish and French

FOA Reference Guide to Fiber Optics book  FOA Reference Guide to Premises Cablng book  FOA Reference Guide to OSP Fiber Optics book
  FOA Reference Guide to Fiber Optics book

Lennie and Uncle Ted's Guides are available as free iBooks on iTunes.
Lennie Lightwave's Guide To Fiber Optics   Uncle Ted's Guide to Premises Cablling
Click on any of the books to learn more.
Fiber Optic Safety Poster to download and print

FOA Videos on videos

Use our "Google Custom Search" to look for specific topics on our website.
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Time To Renew Your FOA Membership/Certifications?

To keep your FOA certifications and membership active, you need to renew every year (or two or three - longer times save you money.) Now we have a new more convenient way to renew - Paypal - where you can quickly and conveniently use your PayPal account or your credit card.

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Some news (August is usually quiet) plus more from FOA schools

Don't miss the interesting questions asked this month!

FOA Newsletter - Features

What's An FOA Corporate Member?

As all FOA individual members know, they join the FOA by becoming certified, mostly taking their CFOTs but some CPCTs,  either by attending a FOA approved school or joining directly based on field experience (our "work to cert" program.) Over the years, we've been contacted by manufacturers, contractors, consultants, and other types of organizations who ask about becoming members.

We don't certify companies or organizations, we told them, so we were not sure what we could offer as a benefit of membership. But then, companies asked about using our educational programs to train employees, how they could get listed on the FOA website as service providers or if they could get a quantity discount on membership or certification for all the FOA members working for them. That began to sound like a benefit for being an FOA corporate member. And providing a list of useful suppliers to the market could be a benefit to the industry as a whole.

So FOA has quietly been letting companies and other organizations join the FOA to take advantage of those benefits so we now have several hundred corporate members. We've put then into a database and listed them on the FOA website in map and list form. Here's the map.

FOA Corporate members

The online
map and list can be used to find suppliers and service providers.

The map, like our map of schools, lets you find the FOA corporate members close to you.  The table form lists them by category: Installer/Contractor, Component Manufacturer, Installation Equip. Manufacturer, Transmission Equipment, Services/Consulting, Distribution and Users of Fiber Optic Networks. You can sort the tables to find members meeting your needs, e.g. by location, certifications offered, etc. Click on any column heading to sort that column; click twice to sort in reverse order.

How Does An Organization Become An FOA Corporate Member?

Simple, just fill in the online application form. When your application is accepted, you will be asked to pay the membership fee -  $100US first year, $50US/year or $100US/3years to renew. You will then be listed on the online  map and list, have access to exclusive FOA educational materials for your employees and get discounts on certifications and renewals. 

Yokogawa Gives FOA OTDR For Use In R&D And Training

Yokogawa OTDR

Yokogawa has presented FOA with a most useful gift, a dual-wavelength SM + MM OTDR model AQ7275 for our use in R&D and training. As you know, FOA has been doing quite a few OTDR experiments in the last few years to show the effects of various test situations on OTDR traces. Our trainers, like Terry O'Malley (who created the AT&T OTDR training program many years ago) have done much of this work for FOA, but now we have our own high-performance OTDR to use for experiments also.

For those who are unfamiliar with the Yokogawa name, they were formerly known as ANDO and the instruments are highly respected worldwide. The unit given to FOA has high resolution capability and is really easy to use. One feature we really like is the ability to save traces as JPG files, simplifying the conversion of files for sharing and posting online.

OTDR trace
JPG straight from the Yokogawa

Many thanks to Yokogawa for this valuable gift and thanks also to our contact at Yokogawa, Michael Kwok.

More on
Yokogawa OTDRs.

Best Illustration Yet Of "Total Internal Reflection"

total internal reflection

We all know fiber works by "Total Internal Reflection," what occurs when a light ray hits the boundary between higher and lower index of refraction materials. We often show this as what happens when you stick a rod into water, but here is a perfect example of total internal reflection from underwater. This photo, taken by photographer Clive Rose of swimmer Ryan Lochte this summer, shows exactly what you would see if you could be inside the core of an optical fiber looking out at the cladding! Lochte's reflection off the surface of the water is a perfect example of total internal reflection.

Here is a challenge to all contractors and installers!

Splice Crews Claim dB Loss Record on Allied Fiber Southeast Route Construction

Allied Fiber, the United States’ first open-access, integrated, network-neutral colocation and dark fiber superstructure, today announced its strategic business partner Hypower Inc. (Hypower), an electrical and utility contracting company based in South Florida, set a dB splice loss company record when installing fiber optic cabling on Allied Fiber’s Southeast Route. Hypower splice crews worked on all of Allied Fiber’s 11 sites and colocation facilities located from West Palm Beach, Florida to Barnesville, Georgia.

While installing more than 3,500,000 ft. (1,125,000 m) of fiber optic cable made for Allied Fiber by Corning Optical Communications, Hypower’s splice crews achieved a remarkable 0.18 to 0.19 dB light loss per kilometer over the entire 700 mile (1125 km) span of Allied Fiber’s extensive Southeast Route from Miami to Atlanta. Attenuation Coefficient measures the loss of optical power per Kilometer. According to the Fiber Optic Association, Inc., standard Attenuation Coefficient of single mode fiber is typically around 0.25 dBb per kilometer.

“Hypower’s level of performance far exceeded the specified loss budget levels planned for when we initially engaged them as a contractor,” said Andrew Thompson, Vice President of Colocation Operations for Allied Fiber. “By working closely with our team, Hypower further enhanced the ultra-high quality levels of service we always seek to provide to customers on our network.”

With strategic business partners like Hypower supporting its network construction and development plans, Allied Fiber is on track to meet the demands for access to neutral colocation and dark fiber services throughout the continental United States. Allied Fiber plans to create a “ring” around the country to facilitate open-access interconnection nationally.

Norway Gets Unique Data Centre

Lefdal Mine Datacenter (LMD), a 120,000 square metre, five-level installation under construction in an old mineral mine near Maloy, ~ 500 kilometres north-west of Oslo, will be the world’s largest data centre once construction is completed, organizers of the build say.

Maloy Norway

The facility will run 100% on renewable energy (wind and water power) and feature a cooling system based on seawater coming from the adjacent fjord.

Rittal Systems Ltd. together with LMD and IBM Corp. have developed the standardized data centre modules based on  Rittal’s RiMatrix S required for the site’s infrastructure. Both Rittal and IBM intend to take space in the facility, according to published reports.

The Rittal offerings include the delivery of five different modules in total, each of them consisting of 10 to 12 server enclosures and one network enclosure and Rittal’s Liquid Cooling Package (LCP).

LCP extracts the heated server exhaust air at the rear of the enclosures, cools it by using high-performance heat exchangers and blows the cooled air back into the cold aisle in front of the server level. The data centre modules also feature redundant power supply and back-up, which means customers can choose between 5, 10 or 20 kW of output per rack depending on what they actually require.

“We foresee a need of 60 new, large-scale date centres in Europe until 2020 alone and expect investments to that effect with a growth rate of 10-12% each year,” said Egil Skibenes, chairman of the board at LMD.

He added that it is “vital in this business to have capacity available within a short time, which precludes turn-key solutions. People need readily available data centre space combined with high cost end energy efficiency.”

The first units are planned to be completed and put into operation by 2016.

Read more in Connections+.

Like Crossword Puzzles? Here's One On Fiber Optics

EP crossword

Do you like crossword puzzles? How about one on fiber optics - or maybe a half-dozen of them? FOA Master Instructor Eric Pearson of Pearson Technologies has created a series of crossword puzzles on fiber optics that are keyed to the FOA CFOT reference materials and his book Professional Fiber Optic Installation, v.9. You can have fun and study fiber optics at the same time! We'll be running a new puzzle each month in the FOA Newsletter.

This month's crossword is on "Light And Fiber." Download the PDF file of the crossword to print here.

Museum Uses FOA Demo To Show How Fiber Works

Cade Museum

The Cade Museum for Creativity + Invention is named for Dr. James Robert Cade, a professor of renal (kidney) medicine at the University of Florida and the lead inventor of the sports drink Gatorade. Although he is most widely remembered for Gatorade, he was a man of many parts; a true Renaissance man. In 2004, Dr. Cade and his family established the Cade Museum Foundation to design and build a museum in Gainesville.  The foundation is endowed with a permanent gift to cover all staff and operational costs, as well as limited programming.  The Cade Museum, scheduled to open in late 2015, will reflect Dr. Cade's outlandish spirit, zest for life and new ideas and his constant, genuine interest in helping, motivating and encouraging people of all ages and experience.

FOA was contacted by Patty lipka, the program director/ educator through the FOA Facebook page. We shared with her some of the educational tools for kids we have created over the years that includes a science project using plastic optical fiber (POF) and the video showing the visible fiber we developed using large acrylic plastic rods.

The photo above is from the Cade Museum "Fab Lab," an interactive workspace where kids can get hands-on time with technology - like fiber optics as shown here.

 Can Squid Teeth Discovery Heal Fiber Optic Cable Jackets Underwater?


Penn State scientists derived the genetic code of squid ring teeth to develop a polymer that self-heals with a single drop of water. The material potentially could extend the life of medical implants, fiber-optic cables, and other hard-to-repair objects, researchers say.

“What’s unique about this plastic is the ability to stick itself back together with a drop of water,” says Melik Demirel, professor of engineering science and mechanics at Penn State. “There are other materials that are self-healing, but not with water. So as not to deplete squid populations, and to have a uniform material, the researchers used biotechnology to create the proteins in bacteria. The polymer can then either be molded using heat or cast by solvent evaporation.

“If one of the fiber-optic cables under the ocean breaks, the only way to fix it is to replace it,” Demirel says. “With this material, it would be possible to heal the cable and go on with operation, saving time and money.

Read more here.

New FOA School COMSTAR Creates Amazing FTTA Lab In Tennessee


New FOA school COMSTAR in Mt. Juliet, TN (just east of Nashville) has created the most amazing lab for training FTTA techs. The lab has towers and antennas representing the various manufacturers and styles of systems connected with fiber around the building to use for teaching OSP courses also. Instructors Rick Ledford, Kevin Woods and Wesley Yemmans recently gave us a tour of their new facility. They currently offer FOA CFOT and FTTA certifications as well as specialized antenna systems training with more planned for the near future.

Get Off At The 14th Street Stop On The 8th Avenue Subway

NY Transit

One of FOA's more unique schools - with a unique location - is NY Transit Authority. Of course NY Transit uses tons of fiber and they have been an FOA school for quite a few years now, training only their own personnel. Peter Giannino, Senior Director, Electrical/Electronics Training (on the left) heads the training group for fiber optics. And yes, the title is the directions we followed to visit the school!

Treasure Hunting On Summer Vacation

Bob the treasure hunter

If anybody deserved a vacation, it was Bob Ballard of BDI Datalynk, the busiest guy we know. Bob was the subject of our article on Kentucky in last month's newsletter, as his organization will be training techs for the new Kentucky statewide broadband network. Bob likes to hunt for treasure (and swim with the sharks as we have seen before) so he volunteered for an archaeological dig in downtown York, England next to the All Saints church.  The church dates back to 980 AD. Bob said " I have never washed so many "rocks and pebbles" in my life! "

EXFO Offers Super Posters And More


EXFO offers some super posters, guides and books. The FTTx and OTDR posters are really useful! Look at the whole selection here.

What Is The Procedure For Construction Of An OSP Fiber Network?

FOA OSP Civil Works Guide

We recently received an inquiry which we passed along to Joe Botha, author of the new FOA OSP Fiber Optics Civil Works Guide. His answer was a list that provides a simple checklist for OSP construction, so we thought we'd pass it along to everyone.

To answer the question “Please summarize the construction procedure for ODN network” - Joe responded as shown below:
1.       Perform a pre-build survey.
2.       Obtain Wayleave (easement) agreements.
3.       Prepare a Project Management Plan.
4.       Prepare a site-specific Environmental Management Plan.
5.       Prepare a site-specific Safety Plan.
6.       Prepare a Quality Monitoring and Controlling Plan.
7.       Businesses / property owner notifications.
8.       Trench, lay ducts, close trench, install MHs and perform reinstatements.
9.       Perform DCP Testing.
10.   Pre-test cables with an OTDR.
11.   Perform DIT testing.
12.   Blow or haul cables.
13.   Fusion splice cables.
14.   Acceptance testing i.e. IL, OTDR, etc.

You can download a free copy of the FOA OSP Fiber Optics Civil Works Guide by Joe Botha here.

Keep Up With Google Fiber News

Google is moving ahead in Austin ans starting in the SE building Google Fiber networks. Here is where to keep track of what is happening with Google Fiber - the Google Fiber Facebook page!

Best Quotes From FTTH Council Conference

"FCC supports communities taking control of their broadband future." Gigi Sohn, Counselor to the Chairman, FCC

"We're not doing this as a hobby anymore." Eric Schmidt, quoted during an interview with Michael Slinger, Google Fiber.

"The minute we announce a city. speed goes up and prices go down." Michael Slinger, Google Fiber.

"Buildings need to be designed for fiber." Jeremy Ferkin, Centurylink

MPO Connectors

If you are interested in MPO connectors, you should read this Belden white paper "Advances in Multi-Fiber Connectivity." You can download it at

More On MPO Fiber Polarity

As we always point out, MPO array connector polarity is complicated - so complicated it currently takes 23 pages in TIA-568 and that may get even larger in the next revision of the standard. We've covered the issues of pins/no pins and keyup/keydown polarity before, but there is still another layer of polarity detail - at the fiber level.

MPO polarity
In fact there are three types of MPO to MPO type cables. Type A cables are straight through cables, what you might expect with a multifiber connector, where the fiber that starts on position #1 on one of the connectors ends up on the same #1 position on the other connector. That's what you might expect if you think about fiber polarity where the same color-coded fiber remains in the same position.

But with MPOs, there is a Type B cable where all the fibers are reversed. In a Type B cable, the fibers are reversed. This is accomplished by reversing the fiber orders in the connectors so fiber #1 goes in connector hole #12, #2 foes in hole #11 to #12 fiber in #1 hole. This is a cable you would use it you have a 40G parallel optics link and use a single cable to connect the transceivers (see diagram on the parallel optics for 40G above since you must reverse conductors at some point. There are other ways to do the reversal, e.g. with a mating adapter if you have several cables in the cable plant.

Then there is a Type C cable. Type C cables have the fibers divided into 6 pairs which are reversed in the cable. That is the blue fiber in position #1 moves to position #2 and the orange fiber in position #2 moves to position #1 and so on. Type C are intended to be used with prefab cabling systems which will connect to breakouts (cables or modules) individual 2-fiber channels on each end as shown above. Reversing the pairs means that regular duplex patchcords will have a crossover needed to allow transmitters to connect to receivers and vice versa. Needless to say, this cable could prove to be a big problem if you tried to use this as a cable for 40G links, as the reversed pairs will need to be reversed a second time with another of these cables. It seems better to not use this cable but put the crossovers into modules on each end that break out the MPO connection to duplex connectors.

Next there are two types of MPO > MPO mating adapters. Type A mates the two connectors keyup to keydown so two Type A cables will allow the color codes to remain correct. The Type B adapter mates two MPO connectors keyup to keyup, reversing the fibers like the Type B cables.

Looking at all these options and adding the options for breakouts on each end, you can see how it's easy to fill 23 pages with diagrams. We've tried to simplify it on an expanded MPO page on the FOA Guide which we recommend you read.

There is a new YouTube video on this part of the MPO polarity -
FOA Lecture 44 MPO Connector Fiber Polarity- see below.

FOA YouTube Channel

New FOA YouTube Videos - Focus On MPO Connectors - Prefab Cabling With MPOs, Testing MPOs and MPO Polarity

We continue to get inquiries about MPO connectors, especially testing them. A continual concern is the variability of loss when testing them. It seems they are not all that repeatable, making testing confusing. We've tried to create materials that explain them and their use. We've recently added three more videos - all focused on the MPO array connector - to the FOA YouTube channel.

Panduit Pan MPO connector
The Panduit PanMPO Connector

FOA Lecture 41 Prefabricated (Preterminated) Fiber Optic Cabling Systems
Prefabricated or preterminated fiber optic cabling systems are made in a factory and installed with no need for termination or splicing. This video looks at how they are used, what components typically are used in manufacturing them and then how to design, install and use a prefab cabling system.

FOA Lecture 42 MPO (Multifiber, Array) Connectors and How To Test Them
MPO fiber optic connectors are multifiber array connectors that have from 12 to 72 fibers in a single connector. These connectors are typically used in prefab (preterminated) fiber optic cabling systems or parallel optics links. They have some unique characteristics in their design and use that users need to understand to implement them successfully. This video will look at their unique features and discuss how to use and test them in actual cable systems.

FOA Lecture 43 Managing Polarity of MPO Connectors (using the PanMPO Connector)
MPO connectors are complicated to manage because they have gender (male/female or as it is generally called "pin/no pin" versions) and keying (generally called "key up/key down"). This creates problems having the right patchcords to test or connect them in systems. In this video, we show the variations and how to accommodate them all with one connector - the Panduit PanMPO. (Thanks to Robert Reid and Panduit for samples to use in the video.)

FOA Lecture 44 MPO Connector Fiber Polarity
Besides the pins/no pins and key up/key down polarity issues, there is the issue of how fibers are arranged in the various types of MPO cables and mating adapters. This video will explain the types of cables and mating adapters and show how the fibers are arranged in each of these components.

Safety On The Job

bucket truck job  Pipeline explosion

Safety is the most important part of any job. Installers need to understand the safety issues to be safe. An excellent guide to analyzing job hazards is from OSHA, the US Occupational Safety and Health Administration. Here is a link to their guide for job hazard analysis.

FOA also has lots of information on safety: FOA Guide, YouTube video and a Safety Poster

"Worth Reading" Is Now OnPin

Join FOA on Pinterest. We have been posting links to pages "Worth Reading" on a special FOA Pinterest page. You can join and keep up to date with the news on our industry which we put there.

Recent posts cover utilities using new generation telecom, India's plan for 100 smart cities, Cincinnati Bell bets on fiber, various opinions on the US battle over net neutrality, etc.


Good Practice Tools For OTDRs, All Free

FOA OTDR Simulator
You may already know that the FOA has a free OTDR Simulator you can download from our website (go here for directions) that allows you to practice using an OTDR on your PC, seeing the effects of changing setup parameters and analyzing dozens of real world traces. But here are two more tools that can be good for practice.

Including more hints from FOA Master Instructor Terry O'Malley like tests on what the end of a fiber trace looks like with broken and cleaved fibers.
Frequently Asked Questions On OTDRS And Hints On Their Use  

"Fiberizer" APP Reads, Analyzes OTDR Traces
Fiberizer is a iPhone/iPad APP that reads industry-standard ".sor" format files and allows trace analysis on your iPhone or iPad. An android version is in the works too. Read more about Fiberizer. And here are more directions on its use.

Events of Interest

EXFO logo

New OTDR Optical Link Mapper Software

Take a demo tour of EXFO’s intelligent Optical Link Mapper (iOLM) to see how we've made link characterization easier. We’ll show you how to get around the limitations of traditional OTDR testing using the one-touch, fully automated IOLM test suite with easy-to-interpret pass/fail results.

September 4, 11:00 AM EST / 8:00 AM PDT / 16:00 GMT
Register Here


As we reported last month in the FOA Newsletter, the state of Kentucky is embarking on an ambitious program to bring broadband to every county in the state. FOA school BDIdatalynk has partnered with KCTCS, the state technical schools, to train field techs for work in this massive project. Now Broadband Properties and the FTTH Council are bringing a seminar to KY to educate locals on how this can affect their communities and they can take advantage of it. More information on the conference is here.

Telco Dat Center Summit

Light Reading’s Telco Data Center Summit is the executive conference for carriers and network operators to plan, design and deploy high-availability, high-performance, highly scalable network architecture to meet cloud services demand.
Topics covered include:
• Operations and infrastructure
• IT applications and analytics
• Facilities and data center management
• Finance, investment and ROI
Special offer for Fiber Optic Association members: Register today for complimentary or discounted VIP admission. BTE provides complimentary admission to employees of service providers, operators, financial and educational institutions, utilities and government agencies. All others will receive a 25% discount. Enter promo code FOA.
Please use this link for the registration page (its tracked):
Or to go to main site this link: 

Remember to use promo code: FOA

Don't Miss These Seminars and Webinars:


Fiber Testing - Presented By Jim Hayes, FOA

This event will be held April 9, 2015
1:00 PM EDT / 12:00 PM CDT / 10:00 AM PDT / 5:00 PM GMT

This webcast seminar, presented by Jim Hayes, examines several ways in which fiber testing- both insertion loss and OTDR testing - has evolved. The seminar will begin with a basic tutorial of fiber-transmission principles and test fundamentals. It will then discuss the uncertainties of each fiber-optic measurement method. The seminar will then address some of the developments that have served to improve the certainty of test results, as well as how technicians can use their instruments more effectively to reduce measurement errors.

Sign Up Here 



Trends in Fiber Testing & Certification
Presented by  Ed Gastle, JDSU
Make sure you're up to date on the current trends and practices for fiber testing and certification.

Now available on demand.

TIA FOTC offers regular webinars and archives them here so you can watch anytime.


LogoNew local programs for fiber installation training

See the Light® Fiber Optic Training Program
Webinars, seminars and certification training classes.

Corning offers a library of more than 200 videos that help our customers with everything from product preparation and installation to proper testing procedures. Our free Video Library Tool provides direct links to individual Corning videos, and allows you to filter by topic or area of interest. Register to download the Video Library Tool.



FOA LogoWhat's Happening @ FOA

FOA on LinkedIn

FOA has three LinkedIn Groups

FOA - covers FOA, technology and jobs in the fiber optic marketplace

FOA Fiber Optic Training - open to all, covers fiber optic technology and training topics

FOA School Instructors - a closed group for instructors and administrators at FOA-approved schools

Grupo de La Asociación de Fibra Óptica FOA (Español)

FOA Corporate MemberCorporate Memberships

FOA is now offering memberships to companies involved in fiber optics as manufacturers, contractors, installers, etc. and government organizations also. Corporate Membership gives companies discounts on memberships and direct certifications and access to special FOA materials for educating customers and employees.

Corporate members are also listed on the FOA website in map and list form.

FOA Corporate members

Read more.

FOA Standards:

FOA now offers free standards for datalinks and testing the installed fiber optic cable plant, patchcords and cable, optical power from transmitters or at receivers and OTDR testing.

What Is A Fiber Optic Cable Plant?

In a recent standards meeting, that issue was discussed with some disagreement as to what constituted a "cable plant." It seemed to be a perfect topic for another FOA "1Page Standard," so a draft version is now uploaded for review (FOA Standard FOA-6, Fiber Optic Cable Plant). Feel free to review it and comment to the FOA at

Available also is a new standard for Datalinks.

Look for the "1 PageStandard" web page and in the FOA Online Reference Guide.

View the  FOA YouTube Video On FOA Standards 

Go to the FOA "1 Page Standards"

NECA/FOA 301 Fiber Optic Installation Standard

NECA 301
Standards cover components and systems and how to test them, but rarely get into installation issues. The FOA NECA 301 standard which covers installation of optical fiber systems has been revised for the second time, adding considerable new materials. This standard is derived from FOA educational material put in standards form and approved by ANSI as an American National Standard. It's specifically written to be used in contracts to define "installation in a neat and workmanlike manner." The standard is available from NECA.   FOA members can go here for instructions on how to download your free copy.

New FOA OSP Construction Guide
FOA OSP Civil Works Guide

FOA has some of the world's experts in fiber optic installation as our certified instructors and it is they who contribute much of the FOA technical materials. Master Instructor Joe Botha of Triple Play Fibre Optic Solutions in South Africa has been one of those contributors. Joe has created a training manual for a new course he is teaching on what they call "Civil Works" and we would call construction.

Joe's course is a prelude to the FOA Outside Plant Fiber Optics Course. Before you splice, terminate and test fibers, you must install cables. Before you install cables, you must place poles for aerial construction or dig trenches for underground construction. While that may sound simple and easy, it is no such thing!

The OSP Fiber Optics Civil Works Guide covers the topics that everyone needs to know - whether you are a network owner/user, contractor, designer, installer (cable layer, splicer, tester, etc.) It covers issues like environmental concerns, safety, easements, and more practical topics like how to dig and back fill trenches.

Joe has created a training manual for his "civils" course that he wants the FOA to share with everyone. This 48 page manual covers just about every topic in fiber optic cable plant construction, including a few that you may never have seen in a manual before. This is a very important document for everyone involved in OSP construction to have.

You can download a free copy of the FOA OSP Fiber Optics Civil Works Guide here.

Application of Standard Project Management Processes in Fiber Optic Cable Plant Project Management

By Alfred Sankara, PMP, CFOS/D – Telecommunications Project Manager

Organizations in the communication industry are proving that adopting proven project management practices reduces risks, cuts costs, and improves success rates of projects. The present article demonstrates how standard project management processes apply to fiber optic cable plant project management.

The article compares the Project Management Institute (PMI)’s standards and guidelines to the FOA’s best practices in terms of fiber optic cable plant project management.  PMI is the world's leading not-for-profit professional association for the project, program, and portfolio management profession. PMI strives to mature the profession of project management through standards, certifications, resources, tools, academic research, publications, professional development courses, and networking opportunities.

The PMI’s Guide to the Project Management Body of Knowledge (PMBOK ® Guide) defines the project lifecycle as a combination of the following three (3) main phases: Project Initiation, Project Execution, and Project Closing. This article shows that the FOA’s fiber optic cable plant project management lifecycle phases, which include the Design, Installation, and Testing, fit with PMI’s recommended project lifecycle.

Alfred Sankara is a telecommunications specialist who has been active in the planning, deployment, and operations of telecommunications infrastructure since 1999.In the United States and Africa, Alfred has been involved in the execution of various telecommunications projects, including plans and specifications development, fiber optic network deployment (FTTH, SONET, DWDM, Carrier Ethernet, and OTN) and wireless network implementation (WiMAX, Wi-Fi, UMTS, and LTE).Alfred co-founded DigiBridge TelCo to contribute to reduce the digital divide in emerging countries by assisting governmental entities to deploy state-of-the-art telecommunications infrastructure.

 Download a copy of Alfred's article on project management for fiber optic construction.


Fiber U

Free Fiber U Self-Study Programs

FOA's "Fiber U" free online self-study programs help you learn about fiber optics, study for FOA certifications or use them to help create "blended learning" classes. There are two new free online self-study programs on Fiber U. Fiber Optic Network Design is for those interested in learning more about how to design fiber optic networks or studying for the CFOS/D certification. FTTx is for those wanting to know more about fiber to the "x" - curb, home, wireless, etc. - or studying for the CFOS/H certification.
Got to Fiber U for more information.

Fiber U Online Self-Study Programs Offer Option Of Certificate of Completion

FOA has been offering quite a few free online self-study programs on Fiber U, our online learning site. We are always getting questions about getting a certificate for completing the course online, so we have setup an option to take a test online and get a certificate of completion for these online courses.

Fiber U certificate

While it's not FOA certification, FOA will recognize a
Fiber U Certificate of Completion as background experience to qualify for applying for FOA certifications. We also intend to expand the program to more specialized topics as preparation for FOA specialist certifications.

If you have associates that want to get started in fiber, have them take this course online to get started. Go to  Fiber U and get started.

Lennie & Uncle Ted Now Available As Free Books on iTunes

Lennie Lightwave's Guide To Fiber Optics   Uncle Ted's Guide to Premises Cablling

Lennie Lightwave's Guide to Fiber Optics and Uncle Ted's Guide To Premises Cabling are now available free to iPad users who can download them from the Apple iTunes store.
Lennie's Guide has always been the world's favorite introduction to fiber optics. It was first published in the mid-1990s by Fotec, the fiber optic test equipment company famous for its "Fiber U" training conferences and more than 60,000 printed copies were distributed. Lennie was one of the earliest commercial webpages and is still online today (and as popular as ever) at Uncle Ted's Guide was created at the request of Lennie readers who wanted a similar simple introduction to "Cat 5" wiring. This latest version of Uncle Ted's Guide covers the all premises cabling topics - wiring, fiber and wireless.
You can find these free guides on Apple's iTunes Store: Lennie Lightwave's Guide to Fiber Optics and Uncle Ted's Guide To Premises Cabling  

FOA Textbook Now Available in French / FOA manuel disponible en français

FOA Text in French

Available from / Disponible sur

And from Createspace / Et à partir de Createspace

FOA Now Offers Fiber Optic Textbook In Spanish

Guía de Referencia de la Asociación de Fibra Óptica (FOA) Sobre Fibra Óptica

FOA text in Spanish
Reference Books for FOA Certifications available on Kindle and iPad/iPhone as well as printed
FOA Reference Guide to Fiber Optics book  FOA Reference Guide to Premises Cablng book  FOA Reference Guide to OSP Fiber Optics book

We have created three new FOA books to be used in training for FOA certifications and as reference books for contractors, installers and end users of fiber optics. These books have full curriculum support, including free curriculum materials for teaching FOA certification courses. Because we are self-publishing these books using more modern "publish on demand" technology, they are easier to keep up to date, easier to buy and much, MUCH cheaper!
All are now available in print and electronically in Kindle and Apple iBook versions. The basic fiber optic book is also available as a self-study program in an Apple APP for iPad/iPhone/iPod.
Details on the new book each of the new books are at the book pages linked to the photos above.


FOA iPad Apps

FOA LossCalc
FOA Loss Calculator AppFOA LossCalc estimates the optical loss of a fiber optic link. This will save time for the installer of a fiber optic link needing to know whether test results are reasonable and/or make a "pass/fail" determination. It can also help the designer of a link to determine if communications equipment will operate over this link.
By choosing the type of link (singlemode or multimode) and specifying the length of the fiber and numbers of connections and splices, it will calculate the end to end loss of the link. The app has default specifications for singlemode and multimode links or the user may create custom setups with specifications appropriate for any application.

Self -Study in Fiber Optics
FOA iPad AppOur first app is a self-study version of the FOA Reference Guide to Fiber Optics. The FOA APP builds on the FOA basic fiber optic textbook to create an interactive learning environment that builds on the iBook electronic version of the book to add a guide to use for self-study and real-time testing that provides feedback on what you have learned and correct answers to questions answered incorrectly.
The FOA APP is priced at only $9.99, same as the iBook, so the self-study program is free. Download it from the Apple APP Store with your iPad or iTunes.



The FOA has many videos on videos, including two Lecture Series (Fiber Optics and Premises Cabling), Hands-On lectures on both and some other informational and instructional videos. For all the videos, go to the FOA Channel "thefoainc" or use the direct links below.

Three New Component/Installation Videos - Focused on MPO Connectors

FOA Lecture 41 Prefabricated (Preterminated) Fiber Optic Cabling Systems
Prefabricated or preterminated fiber optic cabling systems are made in a factory and installed with no need for termination or splicing. This video looks at how they are used, what components typically are used in manufacturing them and then how to design, install and use a prefab cabling system.

FOA Lecture 42 MPO (Multifiber, Array) Connectors and How To Test Them
MPO fiber optic connectors are multifiber array connectors that have from 12 to 72 fibers in a single connector. These connectors are typically used in prefab (preterminated) fiber optic cabling systems or parallel optics links. They have some unique characteristics in their design and use that users need to understand to implement them successfully. This video will look at their unique features and discuss how to use and test them in actual cable systems.

FOA Lecture 43 Managing Polarity of MPO Connectors (using the PanMPO Connector)
MPO connectors are complicated to manage because they have gender (male/female or as it is generally called "pin/no pin" versions) and keying (generally called "key up/key down"). This creates problems having the right patchcords to test or connect them in systems. In this video, we show the variations and how to accommodate them all with one connector - the Panduit PanMPO. (Thanks to Robert Reid and Panduit for samples to use in the video.)

For End Users - Who Think Fiber Needs Maintenance

FOA Lecture 39 Maintaining Fiber Optic Networks  

Two New Applications Videos
To accompany new FOA certifications in FTTA and Data Centers

FOA Lecture 37: FTTA (Fiber To The Antenna) and Data Center Cabling

FOA Lecture 38: Data Center Cabling

FOA Product Demonstrations
In the June FOA Newsletter, we talked about the new 3M "disposable" cleaver, the Easy Cleaver, which is provided free with 3M connectors and mechanical splices that need cleavers. We got samples of the Easy Cleaver from 3M and tested them ourselves, and they work great. You can see for yourself how they work in this FOA YouTube Video about the Easy Cleaver.

We also tested the new Ripley/Miller FO-CF Center Feed Fiber Stripper and used it as an opportunity to show the other three common types of strippers, the Miller, MicroStrip and NoNik and how they are used. So you get a review of how to strip fiber and a product review of the new stripper in this FOA YouTube video about fiber strippers.

New FOA Lectures - Jargon and Jobs

How to Talk Fiber Optics - an introduction to fiber optic jargon - the perfect place to start learning about fiber optics. 

Where Are The Jobs In Fiber Optics? FOA talks about all the applications for fiber optics, what jobs involve and the qualifications for the workers in the field.

What's A "Network"
That's a common question from fiber and cabling people. Even though they may be installing the cable plants for networks, often the nature of networks is not something they have been exposed to, other than perhaps the catch-all "star network" description. But what is a network? What does it connect? How does it connect users and how does it allocate the bandwidth to them? How do various network types vary?

We've been working on some new YouTube videos on networks, starting as we usually do on a new subject with the basics. We have these three videos online now, but watch for more.

Fiber Optics - Live!  A series of videos that use lab demonstrations to show how optical fiber works. 
Fiber Optics LIVE!

Prepolished/Splice Connector Termination (Panduit OptiCam) 

Cabling Project Management - what's involved in a copper/fiber/wireless project -advice for the customer and the contractor

Hazards Of Counterfeit Cable

You may have read the stories we have written about the counterfeit "Cat 5" cable made from copper-clad aluminum rather than pure copper. Recently we tried an unscientific burn test on the cable compared to a known good UL tested cable and posted a video on YouTube. You can see the results below.

Counterfeit cable flame test

Counterfeit Cable     Real UL-rated cable

The difference is obvious and the danger is real. Watch the video on YouTube: Premises Cabling Lecture 11: Counterfeit Cat 5 Cabling

View a complete list of FOA Videos with links to each video on YouTube.

View all the FOA Channel  on YouTube.  


FOA Guide

What's New  in the FOA Online Fiber Optic Reference Guide?

We have been updating the Online Reference Guide to keep up with changes in the industry and adding lots of new pages of technical information.

Fiber For Wireless: FTTA and DAS

FOA Guide page on Metrology- the accuracy of measurements

Updated page on Data Centers

Le Guide de référence pour la fibre optique de la FOA est maintenant disponible en français

Guía de referencia sobre fibra óptica de la FOA Y Guía de estudio para la certificación de la FOA 

Updates for new FOA certifications in FTTA and Data Centers

What do you do when you need to test fiber or cable on a reel? Here is a new page on
Bare Fiber Testing  

Couplers or splitters are used in FTTH and OLANs. How do you Test Splitters? 

Tapping fiber has been a big topic in the news. How do you tap fiber?   
The page on Optical LANs (OLANs) has been expanded with new material and links.

What's A Network? A simple explanation of network types and operation has been added to the FOA Online Guide.

We have updated the "Datalinks" page.

Three "Quickstart Guides" for fiber optic testing: cable plant & patchcord loss, power and OTDR

Learn More About OTDRs - Download a Free OTDR Simulator
More and more installers are being asked for OTDR testing but using these instruments is not easy. They are hard to set up properly and complicated to interpret the traces. Using the autotest function can lead to disastrous results! The FOA has a good tutorial on OTDRs on our Online Reference Guide and we added a free download of an OTDR simulator to the OTDR section so you can learn how to use an OTDR on your PC.

More New Info:

Links to manufacturers and distributors of fiber optic lighting products.

The FOA Online Fiber Optic Reference Guide has become very popular - perhaps the most popular technical website ever, typically with over 360,000 users downloading about 1.75 million pages in 2011! We continue updating materials regularly, keeping it as up to date as possible.

Find What You Want Using "Google Custom Search
custom searchThere's so much information on the FOA Tech Topics and Online Fiber Optic Reference Guide that even a well-organized Table of Contents isn't enough and when the material is always changing, an index is impossible to maintain. So the FOA is using the latest technology in search, Google Custom Search, which will allow you to search just the FOA Tech Topics and Online Fiber Optic Reference Guide for any topic you want to find more about. Try it!  

Go to  The FOA Online Fiber Optic Reference Guide.


New Schools
The FOA welcomes the newest additions to our listing of FOA-Approved Training Organizations:

Electrical Training Institute
Commerce, CA
FOA Approved School # 649

Big Sandy Community & Technical College
Hager Hill, KY
FOA Approved School # 208-46

Ashland Community and Technical College
Ashland, KY
FOA Approved School # 208-45

Find a listing of all the FOA-Approved schools here.

Find An FOA-Approved Training Organization

Most inqiries we get regarding finding a FOA-Approved training organization want to know two things: what school is closest to me or what school offers the certifications I need. The FOA has about 200 training organizations we have approved worldwide so finding the right one can be difficult! We've been looking at ways to make it easier, and we think we've got a good solution. In fact we have two solutions.

First we have added a sortable table of all the FOA-Approved schools.

You can also use our FOA Google Map to find FOA-Approved schools.


What Should A Fiber Optics or Cabling Tech Know and What Skills Do They Need?
FOA certifications are based on our KSAs - the Knowledge, Skills and Abilities that techs need to succeed. Read the FOA KSAs for fiber and cabling techs.

School News


We always enjoy feedback, especially when it shows how great some FOA instructors are. These came from students of Tom Rauch, an instructor at BDI Datalynk:

"I took your fiber optics certification courses this past March. I just wanted to let you know that in two weeks I start working as a fiber optic technician with ___ up in ___. You mentioned on the first day of the course that there is always one guy in class who had rubbed his last two nickels together to be there and, in that instance, I was that guy. Now I'm going to be able to provide for my family like never before and I owe it to the certification that I received from you and BDI Datalynk. I just wanted to thank you again."

"Thanks to our tremendously knowledgeable and patient instructor Thomas Rauch, who was not only generous in sharing his wealth of information, but he did so with ease, humor and in a way that invited curiosity and participation. He was encouraging and proud of our accomplishments and helped us learn from our mistakes in a way that did not break our confidence, rather it pushed us to better results the next go around. The hands on labs were just AWESOME!" Just thought you should know what a class act you have representing you in his travels..... but then again you probably already knew that! : )

In almost 19 years at Verizon and having held numerous positions, I have gone through many training sessions. I cannot remember ever having been actually looking forward to coming back to class quickly after lunch, to get back to the hands on activities, and walking away with the sense of empowerment that the information presented was not only relevant but dead on point accurate! I will be signing up for the Outside Plant class on March! I can't say enough good things about Tom and his impact! Feel free to quote me, I can only imagine that he will open so many doors and change so many lives in the years to come, with his style of teaching! Great experience, awesome job!

IBEW and FOA Partner on Fiber Optic Training

The International Brotherhood of Electrical Workers (IBEW) and the National Electrical Contractors Association(NECA) through the National Joint Apprenticeship and Training Committee (NJATC) in a partnership with the FOA has published a new textbook for training IBEW apprentices and journeymen in fiber optics. The new textbook uses the material from the FOA Reference Guide To Fiber Optics with new material and photos from other NJATC training partners.

NJATC FOA Textbook

FOA is pleased to have been able to assist the NJATC in the development of this new text. FOA has been a NJATC training partner for many years, including offering instructor training at more than 16 of the NJATC's summer National Training Institutes. A majority of IBEW NECA contractors do fiber optics and low voltage, especially for applications that combine electrical and communications cabling like smart grid, alternative energy, traffic controls, data centers, etc.

Quote from one of our certified instructors: I want to thank you and your organization for all the resources you provide for the students and the opportunity to offer the certification to the students. The fact that you published the book yourself to get the cost down and the unlimited free resources on your website shows a commitment to the public that is second to none. I let it be known to the students that the FOA is the best in the industry at supplying knowledge and resources related to the communication industry. I look forward to passing on the information that you provide for the industry.

Great Video About An FOA School And Their Training 
BDI Datalynk trains at the Unversity of Central Florida. UCF created this incredible video on the BDI Datalynk program.  It shows the power of what they offer on campuses around the US.
Watch the video here:
For more information, contact Bob Ballard, CFOS/I, BDI DataLynk, LLC, A Vietnam Veteran-Owned Company, Ph: 512-785-9024 



Good Question! Tech Questions/Comments Worth Repeating

Real Questions From FOA Newsletter Readers

Differences Between Cat 5e and Cat 6 UTP Components
Is there a real difference between cat 5e and cat 6 RJ-45 connectors and punchdowns?  Will speed in cat 6 be reduced if using cat 5e RJ-45 connectors and punchdowns?
A: The specs for Cat 5e and Cat 6 are substantially different (100MHz and 250MHz, and Cat 6A goes to 500MHz) so the designs tend to be different. However, the standards only call out minimum specs so every component tends to be better than the standards. That said, there may be subtle differences in each type that can cause some compatibility issues and as the standards are written, there are no guarantees that the lower-rated component won’t degrade the performance to its level.
It’s best to assume what’s expected of the standards, no cabling will be better than the lowest rated component.

Test MM Fiber With SM Reference Cables?
We have a multimode fiber under test. We do not have a mating fiber that is also multimode... On a bench top test when I zero out my meter and source using singlemode and then mate the single mode to the source , have the other end of the singlemode couplered to the multimode and then the other end of the multimode to the meter I'm measuring approximately -0.07 dbm. This makes sense to me as I'm shooting light from a larger core to a smaller core.. Will this suffice as an insertion loss test? Why or why not?
A: That is not a valid loss test. When you are launching from a SM fiber into a MM fiber, you are not testing much. Most of the issues with loss deal with the alignment and finish of the fibers and you are not testing but a few % of the surface of the MM fiber. (see the graphic of causes of loss here:
And if you want another good illustration of why it is not a good test, try it in the other direction - you will get almost 20dB loss.

Minimum Loss Measured By OTDR
What is the minimum loss which can be measured by an OTDR? Is it a fixed value or does it depend on receiver sensitivity?
A: That's a very good question and is usually asked in relation to splice loss, although it also applies to fiber attenuation coefficient on short cables. It certainly depends on the OTDR and it's hardware and software working together.
Splice loss will be highly dependent on the test pulse width, with wider test pulses making it harder to find a fusion splice as the change in power is spread out over a longer distance. You will be better using a LSA test but even that can be a problem if the fibers have different backscatter coefficients - that being the cause of gainers and the need to measure bidirectionally.
Connectors are another problem because if they have significant reflectance that will affect the precision of placing markers and the pulse width is also a problem.
On longer cables, the increased noise at longer distances can affect the minimum detectable splice loss.
To get the best measurement, you need to optimize the OTDR test parameters.
That may be a lot more than you wanted to know! If you want a numerical answer, losses under 0.05dB are probably questionable. But if you measure that loss (averaged from measurements in both directions) you know you have a good splice anyway.

Test MMF at 1550nm?
How we can accurately test multimode cable at 1550nm.
A: Not much MM is used at 1550, but there are some ways to test it.
1. Get a test equipment manufacturer to make you a 1550nm LED source. It would cost a fortune.
2. Use a SM 1550nm laser source with a ~5m MM launch cable. On the launch cable use a mandrel wrap or serpentine mode conditioner to scramble modes as much as possible. Then use standard double ended test with a MM receive cable. This is the best solution even though it will be under-filling the modes in the MM cable. 
3. Use an OTDR at 1550 nm with a MM launch cable but it will need to be ~1km. The problem will be the ~17dB loss from MM to SM at the OTDR but if it has enough dynamic range, it will still work. You may need a longer test pulse width to get enough range so you need the long launch cable but may have resolution problems on the cable under test.

Estimating Fiber Optic Work
Could you help me to find a source of installation man-hours for this type of work?   I run into estimates requiring this often.
A: There is a page on estimating on the FOA Guide that has information that may be useful.
See at the bottom of the page.

Using Fiber In Hazardous Environments
I have a question regarding an installation at a fuel depot. Equipment at the loading bay communicates with a PLC located some distance away in a MCC room, via Fibre Optic cables.
The Fibre Optic converters and other electronic equipment, in the bay, have been mounted in an Exd (Explosion Proof) enclosure. Space is limited in the enclosure so my proposal is to splice the Fibre Optic cables in an external splicing box with “Breakout Cables” into the Exd enclosure, through Exd glands.  Can the splicing box be a normal PVC / Steel enclosure or must it also be Exd rated?
A: Since there is no electrical service in the fibre splice closure, I would assume a regular fiber closure would be permissible. There may be some local ordinances of the owner of the facility may have other requirements however. Of course you need to worry about fusion splicing in a hazardous area. Fusion splicing in such areas are typically not permissible… what installers do to overcome this issue is to use pre-terminated distribution, breakout or ruggedized zip-cord cables and as a last resort, mechanical splicing.

Testing Different Types Of Same-Sized Fibers
Should one worry about using matched fiber types when testing cables? E.g. don't test OM3 fiber with OM4 reference cables or vice versa, or mizing OS1 and OS2 singlemode.
A: We’ve never tried to do controlled tests of OM3 v. OM4 or OS1 v. OS2. It would be very difficult to get the measurement uncertainty down to where the differences could be seen, I suspect. Just think about finding two fibers, one OM3 and one OM4 with exactly the same core diameter.
One can certainly see differences between using good or bad cables for reference launch/receive cables, but isolating each variable is difficult.
We did tons of tests on some of these issues, like modal control in MM fiber or source wavelength back  20-35 years ago, as part of the early development of standards at EIA (before TIA).  What many users fail to understand is that you have a lot of variables in fiber optic testing and controlling one is not going to be the “silver bullet” to make it perfect. That’s why FOA did the metrology page - trying to explain that the issues are many and often uncontrollable or unknowable!

Indoor/Outdoor Cable
Can you use an indoor/outdoor tight buffered fiber cable in an in-ground  conduit application?  The fiber is not gel-filled.
A: Indoor/outdoor cable will generally have a dry water-blocking tape or powder - not gel on tight buffer fiber - and is OK for underground conduit. But always check with the manufacturer when in doubt.

Fiber On A Pipeline
We would appreciate if you could please advise me on the following aspects on FO cable intended to be used for data transmission for a cross-country hydro-carbon pipeline:
1.     What is the maximum length of a single run of FO cable that can be produced, transported, handled & installed, considering any practical constraints of production/transportation/ handling/ installation?
2.     What are the methods by which the long-haul FO cables (kilometres long) are usually i) transported (series of cable drums on pallets?), ii) handled & iii) installed (onshore as well as offshore)?
3.     Any other precautions/ word of advice in the above case?
A: Most manufacturers have available lengths of “regular” cable up to about 12km, but it depends on the cable type - the weight and bulk is the problem. Submarine cables are built on board ships and have lengths of thousands of km, but they are a very special case. Once you have an idea of how many fibers you need and the cable type, you can talk to manufacturers to get a more precise answer.
Transportation is by cables on reels transported on special trucks that have spindles to pay out the cable or cables on spools transported with the cable spools upright,  sitting on the edges, not the sides, so they can be easily rolled around or put on a spindle to pay out for installation. Upright spools can also be picked up by forklifts without damaging the cables.
I would assume that if you are building a pipeline, you have good roads alongside it so weight is not a problem and bigger spools can be accommodated.

Rural Network Opex (Operating Expense)
I'm looking for some resources that will help me figure out the operating costs of a rural fiber network. I would appreciate it if you could point me in the right direction.
Estimating OPEX is very difficult unless you are a network owner with historical data. Fiber itself has little maintenance. Properly installed, it has no routine maintenance requirements and can operate for decades without needing assistance. See
Repairs are the biggest expense for the cable plant - if you have aerial cable, it can be damaged by vehicles hitting poles or - at least out West, but unlikely in MA, target practice - underground cables can be flooded and frozen in the North or dug up by contractors who never heard of "Call Before You Dig."
Overall network OPEX is the usual provisioning, adding subscribers, upgrading equipment, etc. - nothing to do with the fiber network beyond construction to add subscribers but simply running a system. That all ties into what kind of system(s) you are running.
Planning for the environment, future expansion and adding subscribers is important to keep costs low. We're working with a rural system - an electrical utility in this case - in the CA mountains on a broadband/smart grid project that's probably similar to you. (We know your region, we lived in Boston for 30 years before moving to CA in 2003, had a son go to Hampshire and my family was from the area starting 330 years ago). For your area, the important issues are preparing for the weather and ensuring the contractors are used to designing/installing the cable plant that must withstand freezing cold to blistering hot weather!

Getting Old Cables Out Of Conduit
How do you get old cables out of a conduit when they are stuck?
Usually we are concerned about reducing friction when pulling cables through conduit, but sometimes you need to get them out. Here is a page from American Polywater the leading lubricant company with advice on the subject.

OTDRs For MM Fiber?
I watched the OTDR presentation and would like to clarify some conditions of the standard OTDR test. I am sure that single mode fibers are testable by OTDR. Does the test apply to multimode fibers?
A: Yes OTDRs are used for multimode fiber, but because many MM links are short and OTDR distance resolution is often not very good, the usefulness of such measurements may be limited.
Many of the technical questions we get here at FOA relate to OTDR testing and often resolution is an issue.
If you want to use an OTDR to test short MM links, you need a very high resolution OTDR. Testing is always better at 850nm because the trace has more amplitude and can use less amplification for better resolution. Besides there is little use of MM at 1300nm anymore.
The second issue is mode power distribution - see The laser source of the OTDR launches mainly into the center of the fiber so any loss at a connector is minimized. That affects reflectance measurements too but I’ve never seen it analyzed.
Finally, most MM users are novices, often sold a device they have little training on, so they hit the “auto test” button and store th results because they have no idea what the instrument is doing. Not a good idea…

Storage of Optical Cable
I would like to know that the procedure for long time storage and preservation of fiber optic cables.
A: The preferred guidelines are fairly simple - store the cable on the reel in a indoor dry location where the temperature is moderate - say 10-40deg C- and humidity is also moderate. Have the spools sitting on the edges or on a spindle (see Nexans guidelines here).

OTDR Loopbacks
We are looking at running a OTDR test across a pair of fibre’s but instead of running a OTDR test from A-B and then B-A, we are looping the fibres at exchange B and doing the OTDR test at on F1 &2 at Site A. We have launch cords and trail leads on Fibres one and two but I’m wondering what length of fibre should the loop be, would 50m be acceptable. Typically the sites are 10-20km apart.
A: Loopback tests are a good way to simplify OTDR testing. On a 10-20km run, the loopback needs to be long enough to allow both connections on the far end to be seen, so it depends on the pulse width of the OTDR. I suspect 50m is too short - I’d say use 500-1000m to ensure all the data is valid.

Manufacturing Guide?
Is there a guide published by FOA that provides insight as to the process of fiber optic manufacturing? It's my understanding that the guide stresses quality and controls to ensure performance and reduce product loss?
A: We do have a guide for manufacturers. It is mostly aimed at communications systems and components manufacture. Here is a link to download it.

How Long Does Termination Take?

FOA received a request from a consultant recently wondering if we had information on the termination times for fiber optic cables. After some looking in our archives, we realized we had a document online that compared times for various fiber optic termination processes. The paper was written after several FOA instructors did a comprehensive time and motion study on termination processes. The document is about 15 years old but still relevant.

You can read it here in the FOA Online Guide.

Testing Connectors (From A Patchcord Maker)
What are the chief defining standard(s) that specifies connector and assembly IL (insertion loss) and RL (return loss or reflectance) for both SM and MM fiber?
A: The description on our Guide is here:  
FOTP-34 covers connector testing as a qualification test for the type of connector - basically a "destructive" test for connector manufacturers.
Reflectance is described on that page and here also:
Testing an assembly like a patchcord is covered under FOTP-107

Basic Tests For Fiber Optic Cable Plants
Q: I
did some research and I noticed that there is a bunch of tests that can be done to fiber optics and I was wondering if there is a list of primary tests that can be done as a basic test.
A: Fiber optic testing does have a hierarchy of tests.
  • At the top of the list is "insertion loss" testing which uses a light source and power  meter to test the fibers in the same way that a communications system transmits over the fiber. It is a simple test and the equipment needed is inexpensive.
  • Techs will also use a microscope to inspect the fiber optic connectors for dirt and damage, a big issue for fiber.
  • The instrument called an "OTDR" takes a snapshot of the fiber using a technique like radar. Most outside plant cables are tested with an OTDR and the data ( the snapshots are called "traces") stored for future reference. OTDRs are more expensive and require more training to use properly.
Here is a link to a page on the FOA Guide site that explains the technical,details:
FOA also has information just for users of fiber optic networks, see

How to Clean POF (plastic optical fiber)
Q: I heard that plastic fibres such as PMMA can suffer damage from cleaning from an alcohol solution. Are there alternate cleaning solutions available for these types of fibres."
A: You can use a 10/90 mix of  isopropyl alcohol/water. Typically use with a lint free swab. (from out POF consultants)

Testing Bare Fibers With OTDR
We are starting to test some OPGW cables. We have an OTDR but we don’t find some reusable connectors. If we have to test an OPGW with 48 fibres, we can’t set up 48 SC connectors!
Are there some reusable connectors in the commerce?
A: I assume you mean you need to test with a bare fiber on the OPGW. For testing bare fiber, use a splice, not a connector. Have a long pigtail on the OTDR as a launch cable, long enough for the test pulse to settle, say 100-500m, then use a splice for a temporary connection. You can fusion splice the fibers then cut the splice out or use a removable splice like the Corning Camsplice (
If you use a mechanical splice, you need a high quality cleaver just like with fusion splicing and after several uses, you need to add more index matching gel or liquid - mineral oil works OK.
See the FOA page on Testing Bare Fiber.

Is A Flashlight Test Adequate?

Q: I contracted a firm to install an OM3 of 200 meters. On one  end I have an SFP 1000SX ,on the other a 1000SX converter from optical to UTP. We made pings but they never reached, and I didn’t see the laser at the extreme of the fiber. They promised me to send me the certification they supposely made ,though they assured me the fiber is ok, because  WITH A FLASHLIGHT THEY SENT WHITE LIGHT FROM ONE SIDE TO THE OTHER AND IT WAS VISIBLE. I saw the light too, and I thought the culprit was my switch or my SFP. I want to know: is this a good demonstration that the fiber is ok?
A: A visual continuity test is not adequate - your eye is not calibrated! The power of the lamp is unimportant as each eye’s sensitivity is different. And your eye probably cannot see the light from a 850nm VCSEL source - most people’s eyes are not sensitive at that infrared wavelength. The installer should have tested the link with a light source and power meter ( and given you the loss in dB. The connectors should also be inspected with a microscope to ensure proper polishing and cleanliness ( If the SFP output is -6dBm, what is the power at the receiver? 1000base-SX is supposed to work with 4.5dB loss (see The fiber loss should be ~0.6 dB, so you must have >4dB connector losses! That says bad installation! The 1000SX link should work over 200m if the fiber has been properly installed.

Older Fiber?
I have some 62.5 mm and sm inside fiber plant over 20 years old.  When is a good time to upgrade?
A: When you need to or have to. If it's working OK, there is no need to upgrade!

"Connector Loss" or "Connection Loss"

Q: I have always counted the loss of a connector as .75 dB (568B-3) and 1.5 for a mated pair. Is that correct?
A: While the industry always says "connector" loss, it is actually "connection" loss. As we explain in the page on termination and splicing ( When we say "connector" loss, we really mean "connection" loss - the loss of a mated pair of connectors, expressed in "dB." Thus, testing connectors requires mating them to reference connectors which must be high quality connectors themselves to not adversely affect the measured loss when mated to an unknown connector. This is an important point often not fully explained.  In order to measure the loss of the connectors you must mate them to a similar, known good, connector. When a connector being tested is mated to several different connectors, it may have different losses, because those losses are dependent on the reference connector it is mated to."
The TIA spec of 0.75dB is for a mated pair of connectors. If you have been passing connectors tested @ 1.5dB may have some very bad connectors in your cabling!

Microscope Magnification (11/13)
I am doing a lot of fiber optic jumpers for control systems,  either single mode or multimode. I want to get a scope to inspect the ends after I clean them would you recommend a 200X,  400X handheld or one similar to a Noyes OFS 300 200C?
A: We prefer to use lower magnification and have a wider view so I can see more of the ferrule to determine its condition. You can see the fiber effectively at 100X but 200X may be better. 400X may be too much for most tasks like inspecting for cleanliness, but may be good if you are polishing SM for good reflectance. We've used the Westover units for years because they offer two different methods of illumination - direct and at an angle. If you are doing a lot of patchcords, I recommend a video microscope. I've used the Noyes unit that interfaces to a PC to create the FOA Microscope Inspection YouTube video here: and it works well.

Recycling Cabling
Who can I contact regarding recycling cable I am removing from a building?
A: Here are some people who say they recycle fiber optic cable or at least know how to do it:

Tech Hint: Did You Know You Have A Fiber Optic Tester In Your Pocket?
Yes! That old mobile phone has a camera which may be sensitive to infrared light - lots more than your eye - and can detect light in an optical fiber or from a transmitter.  Chris Hillyer,CFOT/CFOS/I, Master Instructor, Northern California Sound & Communication JATC sent us some photos showing how this works. See below or the video now on YouTube. Update: You should check out your old cell phones before you recycle them. We've found older models use sensors which are better at infrared than the newer ones which take better pictures. This is a good use for your old cell phones hiding in the drawer!

Fiber Cleaning
This is a topic we keep reminding everybody about, and here is why:
From a contrator in the Middle East: Here some samples of the connectors for SM fiber already installed in the system we were testing.
dirty connector   dirty connector
As you can see, the dirt is large compared to the size of the fiber (dark gray), and the core (not visible here) is only 9/125 of the overall diameter of the fiber! More on cleaningSee Product News below for links to vendors of fiber cleaning products.

See news about Fiber Optic Cleaning Videos on YouTube by ITW Chemtronics below.

Fiber Optic Cleaning Videos on YouTube 
See news about Fiber Optic Cleaning Videos on YouTube by ITW Chemtronics three fiber optic cleaning videos on YouTUbe covering Dry CleaningWet-Dry Method, FiberWash and Combination Cleaning. They are good explanations of cleaning processes - the Wet-Dry is especially interesting.

Westover Application Notes And Cleaning Video
Westover has several application notes on inspecting and cleaning fiber optic connectors. The video is a big file (50+MB) but a good tutorial.
Download page:

Measurement Uncertainty: Everyone testing fiber optics should understand that every measurement has some uncertainty - whether you are measuring loss, length, wavelength, power, etc. Knowing that uncertainty is very important to interpreting the measurement. It's worthwhile to read and understand the issue of measurement accuracy covered in this page of the FOA Online Fiber Optic Reference Guide.


Worth Reading or Watching:

We are moving most of the articles in this section to the FOA's Pinterest Page "Worth Reading" - Go there for the latest links

FOA "Quickstart Guides"

In our continuing quest to help people understand how to test fiber optic cable plants and communications systems, we've created two more "QuickStart Guides to Fiber Optic Testing." They are simple, step-by-step guides on how to test fiber optic cable plants, patchcords or single cables using insertion loss or OTDR techniques and optical power from transceivers. It's as straightforward as it can get - what equipment do you need, what are the procedures for testing, options in implementing the test, measurement errors and documenting the results.
It can't get much simpler.
Send anybody you know who needs to know about fiber optic testing here to learn how it's done in a few minutes.

Testing Fiber Optic Cable Plants And Patchcords  

Testing Fiber Optic Cable Plants With An OTDR  

Measuring Optical Power In Communications Systems 

Clean Every Connector - A Lesson We Learned From Creating Lessons

In creating the fiber characterization curriculum, we got inputs from many experienced techs about the testing requirements. Everyone we talked to made a big point about cleaning and inspecting connectors before testing. Dirty connectors are a major problem with errors in testing. We've also seen that many installers think that if a connector, especially new connectors, has a "dust cap" on the connector, it does not need cleaning. WRONG!

The common name for the plastic caps on connector ferrules is "dust cap" and a friend says they are called "dust caps" because they are full of dust. Those plastic caps are made by the millions, popped out of plastic molding machines into barrels and stored until put into plastic bags. Whenever you remove one of them, clean the connector before testing or connecting it.
More on connector cleaning is here and here

What You Need To Know About Fiber Optic Cleaning And More

clean  clean   clean  clean
Ed Forrest, one of the industry experts on cleaning fiber optic connectors, retired about a year ago. We encouraged him to put down on paper what he knew about fiber cleaning and he took our advice. He's now created 4 books on cleaning topics that cover just about everything you need to know. And he added another volume that's also important - maintaining fusion splicers. We recommend these books highly.

How to Precision Clean All Fiber Optic Connections
Understanding Cross-Contamination Points on Fiber Optic Inspection & Test Equipment
Maintaining a Fiber Optic Fusion Splicer
Comparison Study of Precision Cleaning Methods for All Fiber Optic Connection

Whitepaper: The Significance to Optical Internconnect: Properly Cleaning a Fiber Optic Connection

Information on Ed's books is at

New Edition Of Eric Pearson's Fiber Optic "Cookbook"

EP book

Eric Pearson of Pearson Technologies Inc. announced the availability of Professional Fiber Optic Installation, v.9. This recently updated training, field, and reference text is a comprehensive presentation of the information essential to successful fiber optic installation.  This text assists the installer in achieving the three elements of success: low power loss, high reliability, and low installation cost. This text is the ideal tool for three types: those who wish to become professional fiber optic installers; for instructors who want to use the most comprehensive training manual available; and for those who want to pass the Fiber Optic Association CFOT and CFOS/C/S/T certification examinations. Continuously developed and tested over the last 24 years during both fieldwork and training presentations, this text includes both the information essential to understand the reasons for the installation rules and detailed procedures for installation, inspection, certification, and testing of cables, connectors, and splices.

The new edition, #9, is available on

EXFO Offers Super Posters And More


EXFO offers some super posters, guides and books. The FTTx and OTDR posters are really useful! Look at the whole selection here.

TE Connectivity Components For FTTH


TE’s fiber indexing solution offers new approach to FTTH deployments that significantly speeds fiber construction while reducing fiber cable, engineering and inventory management requirements. While typical FTTH deployments require labor-intensive engineering and measurement with custom-length fiber cables, TE’s fiber indexing architecture leverages standardized building blocks – connectorized and indexed service terminals with hardened multi-fiber optical connectors – to create a plug-and-play network that is faster and easier to deploy.

Website, White Paper 

AVAGO Offers Data Center Tech Information

data center
Transition to Leaf-Spine Networks: Data centers worldwide are undergoing major transformations to keep pace with current needs and future-proofing systems to support future needs. The prevalent trend in modern data centers is the architectural shift from a traditional 3-tier network to a cloud-based 2-tier network called the leaf-spine network.

Moving massive data around the data center requires a robust infrastructure that is capable of handling high bandwidth data delivery to and from storage endpoints, servers, top-of-rack (ToR) switches and core switches. Avago Technologies offers data center customers a broad range of cost-effective pluggable module and board-level solutions that address the growing needs of modern data centers. These solutions include a comprehensive portfolio of fiber optic transceiver, transmitter and receiver module solutions supporting 1G, 10G, 25G, 40G and 100G from 20m to 10km link distance.

 - Request AVAGO Data Center Fiber Optic Network Brochure

Getting Cables Out Of Conduit

Usually we are concerned about reducing friction when pulling cables through conduit, but sometimes you need to get them out. Here is a page from American Polywater the leading lubricant company with advice on the subject.

What Is The FOA?
Hear FOA President Jim Hayes tell the FOA Story in a 2-part interview by Sound & Video Contractor Contributing Editor Bennett Liles. It tells about the FOA history, goals and achievements.
Part 1:  
Part 2

New Textbook On Cleaning Fiber Optic Connectors

Cleaning Book EF

As fiber optic networks become faster and link margins lower, cleaning fiber optic connectors has become more critical. Now there is a book that gives really good information on cleaning from a real expert.

Ed Forrest retired from ITW Chemtronics recently after many years of being their expert on cleaning fiber optic connectors. Ed has been one of our best contacts on the subject because his knowledge is both broad and deep. When he retired, we suggested he write a book on fiber optic cleaning and he took our advice.

Ed's book is like a cookbook, looking at specific cleaning recipes, plus evaluating the tools commonly used for cleaning. It's also in color which makes it easier to see what is being done, although it makes the book a bit more expensive.

Now you can buy The Need to Precision Clean Fiber All Optic Connections, A study of the 'sciences of cleaning', contemporary cleaning products, methods and procedures by Edward J Forrest Jr. The book is available online from CreateSpace, the same publisher FOA uses. Go here for more information on the book:

What Happens To Old Fibers?
In a recent web search, we found this article from Corning, reprinted from a IWCS presentation in 1995. It discusses extensive tests on a 1984 cable installed in the northern US to see how it had degraded in almost 10 years. It is interesting to see how the fiber survived OSP exposure. Read it here.

Australia's Standard Is Comprehensive Guide To Customer Cabling (Get your copy free)
In answering a recent technical questino, Trevor Conquest in Australia pointed to the Australian Standard  "Installation Requirements For Customer Cabling." When we checked, it is on the web and can be downloaded. It's a big book - 220 pages - full of details for fiber and copper installations. We recommend you download yourself a copy - go here.

AU Std

Demystify fiber inspection probe technical specifications - From EXFO
The intent of this application note is to promote a better understanding of video inspection probe specifications and features. Properly understanding the key specifications and features will greatly facilitate the decision process involved in acquiring such devices. Understanding the key aspects of fiber inspection probes will also help users understand how fiber inspection probes operate, thus enabling them to maximize the full potential of these devices. Read more.

Where In The US Do Contractors Need Licenses For Fiber Optics?

We often get asked where in the US do contractors doing fiber optic installations need licenses. We found a good website for that information, the NECA -NEIS website. You might remember NECA-EIS, as they are the partner with the FOA in the NECA/FOA 301 Fiber Optic Installation Standard. NECA is the National Electrical Contractors Association and NEIS stands for National Electrical Installation Standards. They have a very easy to use map and table that gives you data on every state in the US, so mark these pages for future reference.

NECA/NEIS (See “State Regulations”) (all electrical licensing)
Low Voltage:

How Is Fiber Manufactured?

Manufacturing fiber at OFS

OFS invites you on a tour of their multimode fiber manufacturing facilities in this new 5-minute video. You will see their highly automated manufacturing operation in Sturbridge, Mass., including their patented MCVD preform fabrication process to fiber draw and final product testing. With a technological heritage dating back to AT&T and Bell Labs, OFS has been manufacturing high-quality multimode fiber since 1981.
Watch the video here.

Want To Know Where Submarine Fiber Optic Cables Run?

There is a good map online by TeleGeography you can access here.

Benchmarking Fusion Splicing And Selecting Singlemode Fiber
We've been asked many times "How long does it take to splice a cable?" It's not a simple answer as it varies with the number of fibers in the cable and the work setup, including whether one or two techs are working at a job site. FOA Master Instructor Joe Botha of Triple Play in South Africa did his own analysis based on decades of experience both splicing cables and teaching others how to do it properly. This is one of the best analyses we have seen because Joe includes prep times as well as splicing times and differentiates between one tech and two techs working together. He adds some other tips on fusion splicing too. This should be mandatory reading for every tech and given to every student! Here is Joe's splicing analysis. 

Joe also has an excellent writeup on how to choose singlemode fiber that helps understanding the different types of G.6xx fiber. Read it here.
And you will want to read Joe's report on splicing different types of SM fiber, including bend-insensitive (G.657) fiber. Read it here.

Free - Mike Holt's Explanation Of The US National Electrical Code (NEC) For Communications Cables
Mike Holt is the acknowledged expert of the US National Electrical Code (NEC). His books and seminars are highly praised for their ability to make a very complicated standard (that is in fact Code - law - in most areas of the US) easily understood. Part of the appeal is Mike's great drawings that make understanding so much easier. Mike makes Chapter 8 of his book available free. It covers communications cables, telephones, LANs, CATV and CCTV, for premises applications. Even if you live in a region or country where the NEC is not the law, you may find this interesting.
Download Mike's Chapter Here

Fiber Optic Cleaning Videos on YouTube
ITW Chemtronics has three fiber optic cleaning videos on videos covering Dry CleaningWet-Dry Method, FiberWash and Combination Cleaning. They are good explanations of cleaning processes - the Wet-Dry is especially interesting.

Westover Application Notes And Cleaning Video
Westover has several application notes on inspecting and cleaning fiber optic connectors. The video is a big file (50+MB) but a good tutorial.
Download page:

A Documentary Treasure on the History of the Internet
15 minutes of a rarely-seen BBC documentary demolish the myth that ARPAnet was inspired by nuclear war, and explain the far more intriguing truth.

Ensuring Distance Accuracy On OTDR Measurements

JDSU Reference Guide to Fiber Optic TestingJDSU Fiber Optic Testing Volume 2
Volume 1 focuses on Basic Fiber testing and Volume 2 is geared toward fiber optic installers, project managers, telecom technicians and engineers who need to understand fiber networks. Volume 2 also covers Chromatic Dispersion, Polarization Mode Dispersion, Attenuation Profile and Fiber Link and Network Characterization. A 3rd volume, a glossary of fiber optic terms, is also available for download.
This is a "MUST HAVE" for all fiber optic techs. Download your free copies here.
We used this book as one of our references in creating a new page in the FOA Online Reference Guide on chromatic dispersion (CD) and polarization-mode dispersion (PMD).

Download yourself a copy and read it

Good Technical Website For Installers
American Polywater ( has one of the best technical website for cable installers. Check out their website, especially “Videos,” “Engineer’s Corner” and  “Calculators.”

Fiber Optic Safety Poster
We've had numerous requests to reprint our guidelines on safety when working with fiber optics, so we have created a "Safety Poster" for you to print and post in your classroom, worksite, etc. We suggest giving a copy to every student and installer.


" Heard on the Street" is a monthly online newsletter from Frank Bisbee of Communications Planning Corporation  that covers the telecommunications and cabling businesses. Each month includes news from manufacturers, trade associations and professional societies like the FOA. You can read the current issue and back issues online.

IGI, a major market research and technology reporting company (the "Active Optical Cables" below)  is offering a a free one year subscription to one of our fiber optics newsletters to FOA members.  All they have to do is to send IGI an e-mail stating which newsletter they would like to get. See for a listing of IGI Newsletters.


FOA Tech Topics - 

A Fiber Optic Tester In Your Pocket?  (See the video on Corning on YouTube )
Yes! The camera in your cell phone is sensitive to infrared light - lots more than your eye - and can detect light in an optical fiber or from a transmitter.  Chris Hillyer,CFOT/CFOS/I, Master Instructor, Northern California Sound & Communication JATC brought this to our attention.
IR Viewer 850 nm  IR Viewer 1300 nm

If you have an old cell phone, try it too. Our experience is that older cell phone cameras have better sensitivity at IR wavelengths than newer phones, so you may want to toss that old phone into the toolbox.


Product News

New Company Focuses on FTTA Testers

Deviser Instruments brings an extensive portfolio of innovative, high-quality, value-packed test and measurement solutions to communications service providers and equipment manufacturers worldwide. For more than 25 years, communications service providers have relied upon Deviser’s products to deliver reliable, high-performance cable, satellite, wireless, fiber optic and telecommunications services to their customers.  Over the last 12 years, Deviser has been an OEM supplier of test equipment to tier 1 communications service providers in North and South America.

Products include a high res OTDR and CWDM testers.

Learn more.

YOKOGAWA OTDR Has Extended range, High Resolution And Multitasking

Yokogawa OTDR

One OTDR manufacturer you don't hear as much about is YOKOGAWA (formerly ANDO) which is too bad - they make some of the best OTDRs, exemplified by this new model AQ7280. Need long range - how about 50dB. High resolution - 0.6m dead zone. Like touch screens, but for some functions want hard buttons, it's got that. Options for VFL, microscope, light source and power meter, etc. - it has that too.
But the unique aspect of the YOKOGAWA AQ7280 is it offers multitasking - you can let do a trace with long averages while you inspect connectors, make power readings, use the VFL or other functions.
More info on the YOKOGAWA AQ7280.

Need A Fiber Optic Cable That's Waterproof And Floats?

fiber that floats

Linden Photonics can help you. The specialize in special underwater cables for towed vehicles or ROVs. Read more.

How To Make Space For More Cables In Full Conduits

Traditionally, underground fiber has been placed in plastic innerducts in conduit. About a decade ago, MaxCell "fabric" innerducts were introduced. They provided the protection needed during installation and greatly increased the availabe space in conduit. Recently, the company has introduced an interesting technique to remove plastic innerduct in place to make more space for cables in current ducts.

Here are photos from a MaxCell YouTube video showing what we are describing.

Before, with innerduct in place:


After, with the MaxCell innerduct and more cables:


We suggest you watch the overview:

Then watch some actual examples of the innerduct removal process:


Switch For Testing MTP/MPO Cables - Now Available for 12 or 24 fiber MPOs

Fibernext has introduced a portable switch for testing multifiber MTP/MPO connectors. You can also watch the YouTube video here.


Recycling Communications Cable

FOA was contacted by a company that recycles electronics communications equipment and cabling. CommuniCom recycles cable/metals/e-waste for Telcos and CATVs. They also recycle Fiber Optic Cable and associated Materials (the fiber scrap). And, they reclaim OSP abandoned copper cables (abandoned from road moves or FTTx growth). This is a huge part of our business. They do the work (permitting/locates/labor) for free and we revenue share back with our clients (telcos).

Contact Steve Maginnis
803.371.5436 (cell)

Micro-Trenching, Cable Removal
Nano-Trench offers products for micro (or I guess they call it nano-) trenching and their website is very informative. They also have Kabel-X, a method of extracting copper cables from old conduit. Both websites are informative and interesting. Watch this video on the cable removal process!

Protecting Pedestals From Rodents
Pedestals and underground vaults can be damaged by rodents who come up through the base and damage cables. Uraseal "Drain N'Seal" foam deters mice from taking up residence in your pedestals. They have some good videos on using their product.

Used Test Equipment – Buy or Sell

Have you read the FOA Tech Topics on Cleaning?

As much as 70% of the problems associated with deploying fiber result from something as simple as dirty connectors according to JDSU. Telephony Online.

US Conec's videos on cleaning fibers - show's the results of proper cleaning.

  • Westover 
  • AFL
    ITW Chemtronics

    Cleantex Alco Pads




    FTTH Notes:

    FTTH in MDUs (Multiple Dwelling Units)

    When we talk about FTTH, we often assume we are installing the fiber to a “home” where it terminates in a optical line terminal (OLT) and services (voice, data and video) are delivered inside the subscriber’s "home." But since we may have detached single-family homes, row houses or living units in a large building, the situations can be quite different, requiring different architectures and installation practices. To clarify the options for fiber in MDUs, FOA has created a new page in our FTTx section of the FOA Guide to explain the options.

    FTTH in MDUs

    FOA Guide: FTTH in MDUs  
    Testing FTTH
    JDSU shows how to test a PON with an OTDR:
    Want To Learn More About FTTx?
    The FOA has created a special FTTx resources section of our website with a FTTx links page with lots of links to news, market reports, technical articles and vendor technical and product information. Here is a great place to start learning more about FTTx.
    FOA's CFxT FTTx Certification Program Explained
    Read the Broadband Properties article about the FOA FTTx certification program. Read the article about FOA President Jim Hayes being honored for his work promoting FTTH.

     Digging Safely (Read the FOA Tech Topic)

    There is a toll-free "call before you dig" number in the USA: 811

    See for more information

    National Fiber Optic Protection Summit by the "811" group.

    The US Department of Transportation has a website called "National Pipeline Mapping System" that allows one to search for buried pipelines.   


    Employment/Job Listings

    Where Are The Jobs In Fiber Optics?

    Fiber Optic Installation Banner

    The FOA was chartered to "promote professionalism in fiber optics through education, certification and standards." Our focus on creating a professional workforce to properly design, install, maintain and repair communications network infrastructure has led us to work with groups in many different areas of technology that use fiber optics, way beyond the basic telecom applications that most of us think of first. FOA has probably worked with most of the potential applications of fiber optics, but we're always learning about new ones!
    In addition, we get lots of calls and emails from our members looking for information about where the jobs are and how to train for them. FOA has created three ways to help you find jobs, train for them and apply for them.

    Where Are The Jobs In Fiber Optics?
    FOA has created a 20 minute YouTube video that talks about all the applications for fiber optics, what jobs are involved and the qualifications for the workers in the field. Besides telecom and the Internet, we cover wireless, cable TV, energy, LANs, security, etc. etc. etc. It's a quick way to get an overview of the fiber optic marketplace and we give you an idea of where the opportunities are today.

    Watch the new FOA YouTube Video: Where Are The Jobs In Fiber Optics?

    What Training Is Needed For The Jobs In Fiber Optics?
    As you will learn from the video described above, the jobs in fiber optics are quite diverse. FOA has investigated these jobs to understand the needs of workers for those jobs and, when necessary, create curriculum and certifications to properly train workers. For example, the FOA FTTx certification was developed at the request of Verizon who needed specialized installers for their FiOS program. Now we are working with the industry on the OLAN (Optical LAN) program (see below).
    We have summarized the jobs and required training in a new web page that has two uses - 1) If you have FOA certifications, what jobs are you specifically qualified for? - 2) If you are working in a specialized field or want to get a job in that area, what training and certifications will qualify you for those jobs?
    What Training And Certifications Are Needed For Jobs In Fiber Optics? 

    How To Find And Apply For Jobs In Fiber Optics
    We get many questions from CFOTs, students at FOA-Approved schools and others contemplating getting into the fiber optic business regarding jobs in fiber optics - and how to find them - so we’ve created a new web page to share some information we've gathered about jobs in our industry. The information is designed to help you understand what jobs are available in fiber optics, how to find them and apply for them.
    If you are looking for a job in fiber optics, here is the FOA's guide to jobs. 

    We hope you find this useful. FOA tries to find new to increase the professionalism in our industry and helping qualified people find jobs is our highest priority - read the article below to see why! If you have feedback on how we can help you and our industry, contact us at

    Join FOA on 
    FOA on LinkedIn

    A list of 10 ways to get your resume noticed, from Marketplace on NPR   

    Job Openings

    California Contractors can bid on this project -

    Millbrae, California Fiber Installation Project

    The City of Millbrae, CA is looking for information from qualified vendors for the installation of dark fiber in support of economic development plans that the City wishes to undertake over the next 3 to 5 years. Download the RFI document here. Download the route drawing here.

    FOA lists jobs and contracting opportunities on our LinkedIn groups. CFOTs are invited to join.

     Do listings in the FOA Newsletter Work? Here's feedback:

    "We did great!  We have over 15 interviews next week."

    "Your newsletter generated a significant number of applicants and we have filled the position."



     FOA Logo Merchandise

    New FOA Swag! Shirts, Caps, Stickers, Cups, etc.
    FOA T Shirt
    The FOA has created a store on offering lots of new logo merchandise. It has lots of versions of shirts and other merchandise with "FOA," "Fiber U," "Lennie Lightwave" designs and more so you should find something just for you! See FOA on Zazzle.


    FOA Certification Top Choice

    The FOA CFOT and CFOS programs continue to gain momentum in fiber optics. Over 36,000 CFOTs (December 2011) have been certified by over 250 schools. Since our founding in July, 1995, we have dedicated ourselves to promoting fiber optics and professionalism in fiber optics personnel, focusing on education and certification. We are continuing to add new schools and more CFOTs as users of fiber optics learn that a CFOT is the indication of a professional, well-trained fiber optic technician. Now with FTTH (fiber to the home) finally taking off, demand for CFOTs is rising and schools are responding by expanding programs rapidly.
    The FOA now has approved programs in place at 200+ organizations, welcoming new additions like the Joint Apprenticeship and Training Committee of the International Brotherhood of Electrical Workers, Corning Cable Systems and NASA's Goldstone Tracking Station. The complete list of FOA-Approved schools is at


    Understanding FOA Certifications
    To answer questions on FOA certifications, we have several web pages:
    Overview of FOA certifications
    Training Requirements - What Schools Are Teaching
    Reading these will help you understand what each FOA certification covers and how to prepare for them.

    Your Name, CFOT® - It pays to advertise!

    The FOA encourages CFOTs to use the logo on their business cards, letterhead, truck or van, etc. and provides logo files for that purpose. But we are also asked about how to use the CFOT or CFOS certifications. Easy, you can refer to yourself as "Your Name, CFOT" or "Your Name, CFOS/T" for example.

    Feel free to use the logo and designations to promote your achievements and professionalism!

    Contact FOA at to get logos in file format for your use.


    Remember To Renew Your Certification !

    Remember to renew your FOA certification. All current CFOTs have a ID Card with their certification data and we keep a database of current CFOTs to answer inquiries regarding your qualifications if needed.  If you forgot to renew, use the online application form to renew NOW!

    You can now renew your FOA certification online - and get an extra month free. Details here.



    To Contact The FOA:
    The Fiber Optic Association
    1119 S Mission Road, # 355
    Fallbrook, California 92028 USA
    Office Hours 10AM-5 PM Pacific Time, Monday to Friday
    Telephone: 760-451-3655
    Fax: 781-207-2421

    You can now renew your FOA certification online - and get an extra month free. Details here.

    Time To Renew Your FOA Membership/CFOT?

    To keep your FOA certifications and membership active, you need to renew every year (or two or three, longer times save you money.)
    You can now renew with PayPal
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    Want to write for the FOA Newsletter? Send us articles, news, anything you think might be interesting to the rest of the membership!

    Return to The FOA Home Page

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