FOA                        logo (R)   


Search the FOA website

Ask Lennie Lightwave about fiber optics



Ask Lennie Lightwave, the FOA AI that answers your questions about fiber optics

FOA Home Page       Contact Us

September 2026 

Issue #277

A publication of The Fiber Optic Association Inc. (FOA), the international non-profit professional association of fiber optics and certifying body for fiber optics.

Sign up for the FOA eMail Newsletter       Privacy Policy


Links To Sections

News     Technical    Worth Reading    Q&A    Training/FiberU    Resoures    Safety   About


INDEX


Newsletter Sections

Click on any link to jump to that section

Features

New FOA Educational Program and Microcredential in Broadband
Ideal Location For Onsite Training
Seen On The Street
New Edition Of FOA Book On Testing
FOA Broadband References Updated
FOA Online Credentials On Apple/Google Wallet
"Ask Lennie" Intelligent Search Of FOA Website
What's New And Popular On FOA Website

News

Is All The News About AI And Data Centers?
Conference On Polymer Optical Fibers
Women Who Splice Program In Canada
Mapping Fiber, Data Centers And Power Plants
Updated California Pole Rules
New Book On Underground Location
Starlink Raises Prices For Rural Users

Technical 

Evolution Of Fiber Tech's Toolkit
Underground Dig-Up Incidents Rose in 2025
Manufacturers Collaborating on MCF Specs
FOA Installation Standard

Worth Reading  Lots of interesting articles to read, watch or listen to.

Q&A    Interesting questions from our readers. This month features FTTH and documentation.


Workforce Training/FiberU
Types Of Work Done By Fiber Techs
FOA-Approved School News
Fiber U Courses

Resources
New FOA Technical Resources

Safety  

About the FOA


FOA Certified Techs

Number of fiber optic techs FOA has certified



Time To Renew Your FOA Certifications?


Jobs

See FOA Jobs Web Page and FOA on FOA on LinkedIn
The FOA Jobs
Using your FOA Training/Certification to Find the Right Job in Fiber Optics
Where Are The Jobs In Fiber Optics?




Join The FOA eMail Newsletter List

Want to be notified when the FOA Newsletter is updated? Sign up for the FOA eMail Newsletter.

Trademarks: The FOA logo and name, CFOT® (Certified Fiber Optic Technician) and Fiber U® (the FOA online learning site) are registered trademarks of the FOA. FOA Guide



Want to know more about fiber optics? Looking for specific information? Here's the largest technical reference on the web: The FOA Online Fiber Optic Reference Guide.

fiber U


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 Kindle eBooks
Some books are available in translations

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

FOA Reference
                          Guide to Fiber Optic Network Design book FOA Book                        on Fiber Optic Testing FOA Fiber Broadband Guide

FOA FTTH Handbook FOA
                            Outside Plant Fiber Optics Construction
                            Guide  Lennie Lightwave

Click on any of the books to learn more.

Fiber Optic Safety Poster to download and print

FOA Videos on videos


FOA is a member of:


TIA Online
ANSI Logo

APOLAN
                            Logo

IMSA


The FOA Newsletter is edited by Jim Hayes - send your stories, leads, ideas, comments to <jim @ foa.org>


Jim Hayes



Search the FOA Website With DuckDuckGo



The Archives: Past Issues.
Use these links to read past issues or use FOA's  Custom Search to look for specific topics on our website.
1/26. 2/26, 03/2604/26, 05/26, 6/26, 7/26, 8/26, 9/26,   
1/25, 2/25, 3/25, 4/25, 5/25, 6/25, 7/25, 8/25, 9/25, 10/25, 11/25, 12/25 
1/24, 2/24, 3/24, 4/24.5/24, 6/24, 7/24, 8/24, 9/24, 10/24, 11/24, 12/24   
1/23, 2/23, 3/23, 4/23, 5/23, 6/23, 7/23, 8/239/23, 10/23, 11/23, 12/23    
1/22, 2/22, 3/22, 4/22, 5/22, 6/22, 7/22, 8/22, 9/22, 10/22, 11/22, 12/22    
1/21, 2/21. 3/21, 4/21, 5/21, 6/21, 7/21, 8/21, 9/21, 10/21, 11-12/21,      
1/20, 2/20, 3/20. 4/205/20, 6/20, 7/20, 8/20, 9/2010/20, 11/20, 12/20
1/19, 2/19, 3/19, 4/19, 5/19, 6/19, 7/19, 8/19, 9/19, 10/19, 11/1912/19
1/18, 2/18, 3/18, 4/18, 5/18, 6/18, 7/18, 8/18, 9/18, 10/18, 12/18
1/17, 2/17, 3/17, 4/17, 5/17, 6/17, 7/17, 8/17, 9/17, 10/17, 11/17, 12/17 
1/16, 2/16, 3/16,  4/16, 5/166/167-8/16, 9/16, 10/16, 11/16, 12/16     
1/15, 2/15, 3/15, 4/15, 5/15, 6/15, 7/15, 8/15, 9/15 , 10/1511/15 , 12/15
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


Time To Renew Your FOA Certifications?

To keep your FOA certifications active, you need to renew them when they expire every 3 years. You can use your credit card or PayPal account or your credit card to renew your certifications.

Renew online with a credit card or PayPal
 


Join FOA On  Social Media




FOA on LinkedIn

FOA has 3 LinkedIn Groups
FOA - official page on LinkedIn - covers FOA, technology and jobs in the fiber optic marketplace
FOA Fiber Optic Training - open to all, covers fiber optic technology and training topics
Grupo de La Asociación de Fibra Óptica FOA (Español)




Enhance your safety with the FOA Safety Vest.

FOA Safety Vest 

It's well made and distinctive.

The FOA Broadband Program

A new program for everyone working with broadband - which is practically everyone!

Broadband banner
 

Everyone talks about broadband. Service providers brag about how fast their Broadband is. Governments create whole new departments to promote Broadband. People are building data centers everywhere to service broadband and connect over it. Trade shows, websites, trade organizations all call themselves "Broadband something or the other."

But what exactly is Broadband? 

How many of the people who plan, design, manage, build, operate or fund Broadband projects actually understand Broadband? Four years ago after the pandemic brought Broadband to everyone's attention, FOA wrote a book about Broadband for those people. Now, at the request of both schools and individuals, FOA has created a Broadband education program. 

We updated the Broadband book to make it a textbook, created a complete curriculum and instructor guide for use by schools, and created a Fiber U online course.

We also created a microcredential in Broadband.

Broadband badge The new FOA Broadband program is flexible; it can be taught as a seminar for workforce development or a course in a degree program. It can be in a classroom, online or blended. It's labs are not hands-on skills labs for techs like the FOA certifications, but either case studies familiar to business or project management personnel or technical projects for engineers, scientists or technicians. And, of course, Broadband is available as a free Fiber U self-study course.

"I like to think of this Broadband course as an elective in college. When I was in college studying physics, I was required to take elective courses. I chose Economics, Psychology and Philosophy. When I became an entrepreneur in fiber optics, those courses were as important to my success as were my courses in physics - maybe even more!" Jim Hayes, FOA President.

Broadband is not an FOA certification course, those require hands-on skills; it leads to the "FOA Broadband" microcredential.

The FOA Broadband Program

Understanding Broadband, what we call high speed Internet access today, has become a necessity for everyone. In less than half a century, communications on a backbone of fiber optics has revolutionized communications and, in many ways, society in general. How does Broadband work? This course will explain not only how broadband works, but how it was developed and how it is integrated into our world today.

One of our instructors teaching in a college-level program called Broadband a "core competency" not just for fiber optic technicians, but for practically everyone. When the pandemic had everyone quarantined working or studying from home, everyone realized how important Broadband really was - it enabled working from home, attending school from home, consulting with medical teams from home, and of course shopping and being entertained.

The programs started to connect everybody to the Internet required many government employees to focus on

Broadband often putting responsibility on people who were new to broadband and technology in general. Many in construction and project management had to learn about Broadband. Everybody talked about Broadband but few understood it.

That's when FOA wrote a book about broadband, the FOA Guide To Fiber Broadband which became a tech best seller on Amazon. We devoted articles in this Newsletter on how FOA had worked with organizations to create "do-it-yourself" FTTH networks in urban, suburban and rural areas, how some rural areas were more quickly served with line-of-sight WiFi or satellite service while waiting for a more powerful fiber network.

Unfortunately, in the US, interest in Broadband went from looking for solutions to  following the hype over the BEAD program, applying for and waiting for US government BEAD money. Now 6 years after BEAD was created, fiber stands to get only about 1/4 of the promised $43billion
(if any is ever disbursed,) 1/2 evaporating and the final 1/4 going to satellites. The rest of the world focused on solutions, as did about a thousand organizations in the US, so Broadband has been growing well. The FOA Broadband program is aimed at those looking for solutions.

FOA Broadband Program  

To support the FOA Broadband program, there is an updated textbook, Fiber U online self-study program, school curriculum and YouTube video. Learn more about these here.

For schools interested in the FOA Broadband program, contact FOA for more information
.


An Ideal Location For Onsite Training

Many FOA certified instructors train at their customer's locations. It's convenient for the customer since their employees do not have to travel and often the instructor can use their facilities and equipment to make training better and more realistic. That was certainly the case recently when Guy Sanford, FOA Approved School #350, did a Fiber Characterization Certification (CFOS/FC) course at an electrical utility. Here's Guy's description of the course and some photos he sent.

"The first Fiber Characterization class was great. The company supplied me with all of the equipment (EXFO FTBx - 570 Dispersion Analyzer) as well as 90 kilometers of True Wave fiber and 90 Kilometers All wave fiber. We then went out to one of their CO locations to do some real time testing."

Guy Sanford training Customer Lab

The customer's lab included ~200km fiber and the fiber characterization test equipment.

Guy Sanford Training

Outside the lab, the class could connect to the customers network for some actual network testing

Guy S Onsite class

Students learned how to test CD and PMD then tested the actual network.



Seen On The Street

Quick Repair
FOA Instructor Milt Murry sent us some photos from his neighborhood in St. Louis, Missouri,USA that indicate that pedestals and cars don't mix. Milt followed up with photos showing the pedestal was quickly repaired. Good work by AT&T guys!


Smashed cabinet repaired  Smashed cabinet in St. Louis   



And New This Month - showing how bad workmanship is a widespread issue.


Jasper, GA

Jasper, GA From Sarah Kasdan, BDI Datylink

Ypsilanti, MI

Ypsilanti, MI, from a LinkedIn post


New Edition Of FOA Textbook On Fiber Optic Testing

FOA Fiber Optic Testing TextbookFOA has published the Second Edition of The FOA Reference Guide To Fiber Optic Testing. The textbook has been updated to include new technology, equipment and practices plus a more comprehensive index.

The FOA testing textbook focuses on the testing of fiber optic cable plants, both outside plant and premises. It covers microscope inspection of connectors and how to clean them, visual fiber tracing and fault location, optical power measurement, insertion loss and OTDR testing. It also includes chapters on the types of fiber optic test instruments, calculating loss budgets, fiber characterization and testing PONs. A chapter of checklists is included to help test techs ensure comprehensive testing and ease troubleshooting. The final chapter covers the measurement uncertainty of fiber optic measurements, beginning with typical measurement errors.

The FOA testing textbook is the reference for FOA CFOS/T Specialist Certification In Fiber Optic Testing in classroom training and online training at Fiber U.


The FOA Reference Guide To Fiber Optic Testing - Second Edition  - 2026

320 pages
ISBN: 9798197159762
Independently published

List Price: $35.95 paperback, $16.95 Kindle
Available in paperback and Kindle versions from  Amazon.com and other booksellers.




Broadband  Updates

FOA has been updating our references and courses for Broadband.

FOA Program And Microcredential In Broadband

Broadband badge Now, at the request of both schools and individuals, FOA has created a Broadband education program. We updated the Broadband book to make it a textbook, created a complete curriculum and instructor guide for use by schools, and created a Fiber U online course. We also created a microcredential in Broadband.


New Video Lecture - Understanding Broadband

FOA has added a new YouTube video lecture to our series on fiber optics. Lecture #74 is Understanding Broadband. This lecture was created for the same reason that we created a textbook on Broadband - everybody talks about it but not everybody really knows what exactly Broadband is, how it was developed and how it is delivered (mostly on fiber optics, of course.)

New Video Lecture - Understanding Broadband

This short lecture (about 15 minutes) explains Broadband in a non-technical way to allow not only the techs to understand it, but also the planners, business people and the general public to understand it.

You can watch FOA
Video Lecture #74 - Understanding Broadband - on YouTube here.
 
----------------------

Update - 2nd Edition: The Fiber Optic Association Reference Guide To Broadband

 FOA Guide To Fiber BroadbandA new edition of the FOA broadband book is now available. It's updated for new tech like LEO satellites and, at the request of our schools, been expanded to include chapter questions and a comprehensive index to facilitate using the book as a textbook for classes.

The new edition is aimed at teachers who want to include communications technology in their classes. It is appropriate for a module or semester course for engineering, science or even management students. It is intended to be an introduction to communications technology appropriate for a communications course at almost any level (junior high, high school or college,) as well as for managers involved with broadband projects.

The Fiber Optic Association Reference Guide To Broadband  

Paperback and Kindle versions available from Amazon or most booksellers.

-----------------

Fiber U Broadband Self Study Program

FOA has added a new Fiber U self-study program on Broadband, The course includes 10 lessons that cover the full scope of broadband technologies. Like all Fiber U courses, it's free, and after you complete the course you can get a Certificate of Completion for a nominal cost.

The Fiber U self-study program about Broadband.



Save FOA Online Credentials to Apple Wallet or Google Wallet

You can now purchase wallet-ready versions of your FOA Certification Online Credential and save it directly to Apple Wallet or Google Wallet. Keep your credentials on your phone and share them quickly whenever needed. This optional feature is now available from your FOA Certification Online Credential web page hosted by BadgeCert. Wallet-ready credentials are personal purchase options for individuals who would like them.

Note you can also get a Certificate or Business Card for your credential also.



Jump to News 


Ask Lennie Lightwave About Fiber Optics

The FOA website and the FOA Online Guide include what is probably the largest knowledge base in fiber optics. We provide links, contents pages and a search engine, but the amount of content is daunting. Ask Lennie is now available to search the FOA website using AI.

Ask Lennie Lightwave is waiting to help answer your questions and find things on the FOA Website.



Classroom Resources For STEM Teachers In K-12 And Technical Schools

STEM teachers resourcesHere is the POF kit sent to teachers for demonstration.

Teachers in all grades can introduce their students to fiber optic technology with some simple demonstrations. FOA has created a page for STEM or STEAM (science, technology, engineering, arts and math) teachers with materials appropriate to their classes. Fiber Optic Resources For STEM Teachers.

FOA also has a YouTube Video on "Careers in Fiber Optics" and a "Careers In Fiber Optics" Website.



FOA Newsletter Sections

News     Technical    Worth Reading    Q&A    Training/FiberU    Resoures    Safety   About





News

Lots more news in Worth Reading below

NEW AT FOA:

Standards
FOA Standard For Installing Fiber Optic Cable Plants

Credentials

About FOA Credentials

Badge in FIber Optics 

New/Updated Web Pages

Cross Reference Guide to Textbooks, Online Guide and Fiber U    FOA Videos Guide.

Index Of Articles On Fiber Broadband Networks 

FOA Guide To The Fiber Optic Workforce
 

FOA Credentials: the differences in certifications, certificates and badges.

Books - new editions

FOA Reference Guide To Network Design And Project Management, second edition - adds project management to design

FOA Reference Guide To Fiber Optics, Second Edition, second edition - update of the basic fiber textbook.

The FOA Reference Guide To Broadband  second edition  -update - popular with broadband planners

Fiber U

Broadband

Safety

New In The FOA Guide

Introduction To Broadband 


Guidelines For Fiber Optic Project Planners 


Cross Reference Guide to Textbooks, Online Guide and Fiber U    FOA Videos Guide.
 
Satellite Communications 

OSP Aerial Construction Workmanship  

Splices And Connections Of Regular to BI Singlemode FIbers.  

Fiber Optic Safety - Installation and Construction

Fiber Optic Network Troubleshooting.

Quotes of the month:

“We may have the smartest people in the world working on these A.I. models, but it is like Marie Curie handling radium with her bare hands,”  Katie Moussouris, the chief executive of Luta Security, which helps companies look for software vulnerabilities, quoted in the NYTimes.

"We have a dangerous habit of taking warning signs seriously only after a catastrophe has taught us what they meant."Jen Easterly, a former director of the U.S. Cybersecurity and Infrastructure Security Agency, also in the NYTImes.


Is All The News About AI And Data Centers?

It certainly seems like it. And each month the focus seems to change. Until recently, much of the focus has been on the financial aspects of the data center building boom and the enormous power requirements of the data centers needed for AI. Financial analysts continue to debate over the costs, borrowing and circular financing arrangements (NYTimes, WashPost), some comparing it to the Dot-Com Bubble. Even Bill Gates is expressing concern (NYTimes.)

The workers who build data centers love them, especially IBEW electricians, because they must not only build them, but also be around for the frequent updates as hardware technology improves. Electricians are reputedly moving to be near data centers because that's where the work is. (Many electricians also do fiber optic installation also - about 40 IBEW apprenticeships include fiber optic training with FOA CFOT Certification.)  Cabling techs love them too, since they represent more than 40% of all premises cabling work today (CI&M)., led by the US market with a global growth of 44%, holding 69% of the data center cabling market and significantly outpacing China and other regions.

The power consumption issues refuse to go away, in fact, a new issue has emerged. AI data centers have giant variations in power consumption, depending on the computing load. These variations are trouble for the electrical components at the data centers as well as the electric grid which is not well equipped to deal with surges. Power increments equivalent to the consumption of factories, towns or even cities can appear and disappear within seconds, creating repeated shocks that connected equipment struggles to absorb. One solution is to install dummy loads - giant resistors that even out the power needs but make it always higher, wasting energy. Data-center users have deployed techniques to smooth out the power fluctuations of AI workloads by running side computations — essentially dummy math that isn’t part of the training process — to keep GPUs operating steadily.

transformer
Building a transformer for the power grid, NYTimes 

On a similar topic, the NYTimes ran a fascinating article called Why Is It So Hard to Build the Thing Our Entire Power Supply Depends On? It covers the manufacture of giant transformers that make the grid work, stepping down high voltages used in transmission lines to the voltages we use everyday.

It seems the majority of recent articles about AI and data centers has focused on "rogue" AI and how it threatens, well, almost everything. The NYTimes ran a guest essay called "If You Weren’t Worried About A.I., You Should Be After the Past Few Weeks" by Nate Soares is the president of the Machine Intelligence Research Institute. Another NYTimes opinion piece was titled "The Only Way to Keep the World Safe From A.I." And another "A.I. Is Becoming So Powerful, It’s Stumping Those Trying to Contain It." was about Irregular, an Israeli start-up, worked with OpenAI, Anthropic and Meta to assess the security of their A.I. models. It made a mistake. Then the tests went off the rails.





POF Conference 2026

The 34th International Conference on Plastic Optical Fibers (POF 2026), which will take place from September 29 to October 1, 2026, in Nuremberg, Germany.

Since 1992, the POF conferences series is the leading scientific event on all aspects of plastic optical fibers and polymeric optical waveguides, from latest scientific developments to leading-edge industrial applications. Major worldwide makers of POF as well as industrial users will showcase their products in the exhibition in parallel with the scientific POF conference. All relevant information on submission of scientific contributions, exhibition and sponsoring options, registration, venue, and program can be found on the official conference homepage www.pof2026.org.


"Women Who Splice" Schedules Program in Nova Scotia In October

Women Who SPlice
The "Women Who Splice" training program described in the June FOA Newsletter has scheduled a class in Nova Scotia this October 19-21.  This program will provide realistic exposure to the technical and professional expectations for a career in fiber optic splicing, and provide the opportunity to learn new skills in a supportive environment. Participants will leave with a clear understanding of the trade and whether it aligns with their skills and interests.

More details and registration.




Mapping Fiber, Data Centers and Power Plants

Opengridworks.com is a website that shows a map of the whole Earth  where it shows the location, size and types of electrical power generating facilities and transmission lines with their voltage. Overlaid on this graphic is the location of data centers and the local power substations because the biggest concern over the location of data centers is where they will get their power.

Opengridworks
The website is interactive. You can zoom in on any location and see the local area in detail. For example, below is the area of LAX, Los Angeles International Airport, and the area around it which is home to several data centers serving the aerospace industry in the area.

This site covers the entire world, so no matter where you are interested in data centers or power, you can find them. It's a fascinating website and very informative. You can spend a lot of time here!

Opengridworks.com map of the data and power for the whole Earth.


Updated California Utility Pole Rules Aid Broadband Expansion

As systems evolve and places develop, so too does demand for utility poles – including attaching aerial fiber and equipment with related safety considerations and coordination among public and private entities. The California Public Utilities Commission (CPUC) recently published updated state rules for access to utility poles and rights‑of‑way in California. General Order 178 modernizes pole attachment and replacement requirements, as well as other practices to improve pole safety and effectiveness. Learn more about these important changes: California General Order 178 (May 2026)


Underground Dig-Up Incidents Rose in 2025 According To DIRT Report

The Common Ground Alliance released preliminary finding of the 2025 "DIRT" report (DIRT =  Damage Information Reporting Tool) that showed an increase in dig-up  incidents last year, with the majority of damage sustained by telecom and CATV networks. You can read about the DIRT report in CI&M and you might enjoy reading the new book on underground disaster below.


New Book About Underground Disaster Prevention

Disaster bookThe FOA Newsletter article in February 2026 on underground location was adapted from the  new book coming August 10 Holding Back Disaster The Men and Women Standing Between Death and Destruction, Billions of Dollars of Losses, and Life-Altering Infrastructure Disruptions by Scott Landes and Benjamin R. Dierker.

The Common Ground Alliance (CGA) reported that its national measure of excavation damage to buried utilities have reached a record high. With 50 million miles of buried pipes, cables, and wires across the U.S., excavation damage is not unexpected. But every incident is preventable. Common Ground Alliance (CGA) should be commended for tracking these statistics and helping the industry work toward avoiding every incident. The record-high Index provides the immediate backdrop for Holding Back Disaster, but it is only one part of the story the book tells.

Rather than presenting excavation damage as a narrow technical problem or the failure of a single stakeholder, Holding Back Disaster examines the complete system surrounding buried infrastructure protection. Blending real-world incidents, historical development, policy analysis, expert perspectives, operational practices, and emerging technology, Holding Back Disaster connects national infrastructure investment and federal safety policy with state excavation laws, local public works, utility records, One-Call centers, locating capacity, construction contracts, project scheduling, workforce pressures, field practices, data quality, mapping, enforcement, risk management, and emerging technology.

Order Holding Back Disaster (AMAZON)  


Quote Of The Year (maybe Century!) (this is worth repeating)

Speaking at the Goldman Sachs Communacopia + Technology Conference, AT&T’s CEO John Stankey said, “There’s a fallacy to say there’s fixed networks and wireless networks. There are only fiber networks with different access technologies on the end of them. That’s where this is all going.”

Technical

Fiber optic technology, standards, equipment, installation, etc.

Ask Lennie Lightwave about fiber optics

Ask Lennie Lightwave, the FOA AI that answers your questions on fiber optics


The FOA Update Page covers the new technology and applications we covered in this newsletter recently. Now you can review all that new tech at once.


FOA
                          Guide

Cross Reference To FOA Technical Reference Materials

The FOA has almost 1,000 pages of technical information on the FOA Guide, 100+ videos and two dozen online courses at Fiber U, all this can make it difficult to find the right information.

Cross Reference To FOA Tech Materials
To help this, we have created a cross reference guide to the textbooks, Online Guide and Fiber U courses, all the FOA technical information. Besides the textbooks, online Guide and Fiber U, each section of the Guide also includes links to the 100+ FOA videos available.
Cross Reference Guide to Textbooks, Online Guide and Fiber U

FOA Videos
We have also rearranged the 100+ FOA videos in similar categories on the Contents Page of the Online Guide, making the videos, especially the lectures, much it much easier to find a video on a particular topic. 
FOA Videos Guide.



fiberu.org

Want to know more about fiber optics? Study for FOA certifications? Free Self-Study Programs are on Fiber U®





The Evolution of the Fiber Tech's Toolkit

Vladimir Grozdanovic

We are all witnessing major technological changes that are significantly affecting nearly every aspect of our lives. In the field of fiber optics, the past few years have brought numerous innovations that are already being deployed, as well as others that are expected to see widespread adoption in the near future. These include a new generation of ribbon cables with significantly higher fiber counts, the introduction of MCF and HCF fibers, terabit-capable optical transceivers, ultra-high-density optical connectors, connectors that require no cleaning, and many other innovations.

Evolution of Fukikura Fusion Splicers
Evolution of Fujikura Fusion Splicers

The development of telecommunications equipment is accompanied or at least should be accompanied by the development of appropriate tools and test equipment. At the same time, there is an increasing need for professional training to ensure that engineers and technicians can properly deploy, test, and maintain these emerging technologies.

Read the article here.



Optical Fiber Manufacturers Collaborating to Define Multicore Fiber Specifications

AFL, Corning, and Sumitomo Electric, along with transceiver provider TeraHop, are working on a Multi Source Agreement (MSA) to specify the design, performance, and interoperability requirements of a four-core singlemode fiber.  The product of their work will be a Multi Source Agreement (MSA), titled SDM4 MCF MSA, that will outline the MCF design, performance, and interoperability requirements for passive optical connections in data center applications.

Read more about the multisource agreement.

TIA has also started the Task Group on Evaluation of Cable and Connector Testing Standards in FOTPs and Their Applicability to Multicore Fiber and Hollow Core Fiber

Looking For More Information About Multicore Fibers?

There is an ITU document you may be interested in:

ITU-T Technical Report (09/2022) GSTR-SDM, Optical fibre, cable, and components for space division multiplexing transmission

https://www.itu.int/dms_pub/itu-t/opb/tut/T-TUT-HOME-2022-1-PDF-E.pdf



The FOA Installation Standard

Available as a free download or purchase printed or Kindle versions online at Amazon.

FOA Installation Standard This standard focuses on the processes for installing a fiber optic project and provides guidance on the design, installation and management of the project. The standard covers outside plant installations, both aerial and underground, and premises cabling including the various installations methods commonly used. It is an open source standard. Users choose the sections that apply to their project and incorporate that into their documentation like the SOW (Scope of Work) or other project paperwork. Provide copies to your planners, designers, contractors, installers and suppliers.

More information and a Table of Contents.

Download a free copy of The FOA Standard For Installing Fiber Optic Cable Plants. (PDF 1.6MB)

Purchase printed ($14.95 US) or Kindle ($9.95 US) versions online at Amazon

TIA Guide To Networks

TIA has a guide to many standard networks like Ethernet and the specs for their use on numerous standard cabling systems. Want to know how far Ethernet 100GBASE-LR4 can go (30 km) or how much link attenuation is OK (6.3 dB), this publication will tell you.

Download your copy from TIA here.




"Call Before You Dig" Video



NATE: The Communications Infrastructure Contractors Association today announced the release of a new video, “811- Call Before You Dig,” as part of its efforts to promote safety awareness around underground utilities and the critical importance of making 811 calls prior to digging. 

Watch the video on YouTube,




New VIAVI Fiber Testing Pocket Guide – Built for Techs in the Field

Pocket Guide
Designed with field techs in mind, this compact guide from VIAVI is packed with essential fiber testing tips, quick-reference checklists, and step-by-step insights that cover every stage of the network lifecycle. It’s built to fit right in your pocket or tool bag, so the info you need is always within reach.

Request your free VIAVI Fiber Testing guide now.


Tech Notes And Articles From FOA's Worldwide Network Of Advisors

FOA has a worldwide network of technical advisors who help us develop our knowledge base. This month we have contributions fro several regular contributors, Eric Pearson, a founder of FOA, and Vladimir Grozdanovic in Serbia. We provide an abstract here and a link to read the entire article which will be added to the FOA Online Guide.


Ensuring Reliability  By Proper Fiber Optic Installation

The goals of a fiber optic installation should not be solely based on achieving the lowest initial cost. Should lowest cost result in reduced reliability, lowest initial cost may result in significantly increased lifecycle cost.

Eric Pearson does it all, educator, writer, consultant, with a resume' going back to the beginning of fiber optics. Here's advice from Eric on the way to ensure the long term reliability of a fiber optic cable plant by proper installation.

Ensuring Reliability  By Proper Fiber Optic Installation  

Testing that Demonstrates, or Not, High Reliability  

Interpreting Test Results   (New November 2025)


3D Inspection and Precision Cleaning

Field Service and Production Line Considerations When Precision Cleaning and Inspecting Fiber Optic Surfaces by Ed Forrest. Ed has decades of experience in developing cleaning solutions for fiber optic connectors


A Quiet But Important Change In The Fiber Optic Cable You Buy

With so many cable designs today, like microcables or high fiber count cables, requiring bend-insensitive fibers, would it make sense to make all or most singlemode fibers as bend insensitive fiber?

Two manufacturers (Corning and OFS) told FOA the industry is moving towards a G.657.A  specification in fiber, because the industry is moving towards smaller denser cables in the network & the bend resilience is a requirement for the cable design.  So singlemode fiber is moving to being BI fiber, exactly what happened with 50/125 laser optimized fibers a decade ago. With most new fiber, compatibility is not an issue. But it is recommended to check with the cable manufacturer if you are not sure what fiber is being used in the cable you are purchasing.

Read the
entire FOA report on compatibility of G.652 and G.657 singlemode fiber that includes this summary.


Jump to Worth Reading


Updated FOA OTDR Trainer

OTDR averagingFOA has rewritten the FOA OTDR Trainer around Fiberizer. The Fiberizer PC software was the version we used for creating the Trainer, but the basic techniques apply to all versions of Fiberizer. FOA provides a folder of sample traces in 3 categories - Parameter Traces, Sample Traces and PON Traces - around which we build the trainer. If you set up Fiberizer, you can complete the FOA OTDR Trainer lessons and then use the same software to analyze other traces you may have, even from other brands of OTDRs, as long as they are .sor files.

The FOA OTDR Trainer is ready to help you learn about OTDRs. Go to the OTDR Trainer page,
tech/ref/testing/OTDR/OTDRsimulator.html, choose your version of Fiberizer, download the FOA Traces and you are ready to go.

FOA wishes to thank VeEX for permission to use their Fiberizer® software in our OTDR trainer. And our compliments to them for making the ap available on multiple platforms that ensure anybody can use it.



FTTH Technical Papers
FOA contributor Vladimir Grozdanovic has created these technical papers based on his field experiences.

The Evolution of the Fiber Tech's Toolkit 
Basic Rules For Cable Installation And Termination In the Central Office/Head End 
Formation of an Underground Horizontal Channel Using Manual and Pneumatic Piercing Tools 
Alternatives For Installation of Optical Cables in Urban Areas 
The Differences Between Conventional and PON Optical Power Meters 
Fiber Optic Color Codes with Cross Reference 
Splicing Optical Power Ground Wire OPGW
Horizontal Directional Drilling (HDD)
Construction Methods For Microtrenching
Fiber Optic Ducts And Microducts
Fiber Optic Tools  
Optical Distribution Frames (ODFs) And Patch Panels 
Using Fiber Identifiers
Testing The FTTH PON Network (new)   
Troubleshooting PON Installations.
Installation of FTTH Active Equipment in the FOA Guide.
Optical Splitters in the FOA Guide.
Examples of poor installation of FTTH in the aerial outside plant and in the customer premises.

Recycling Fiber Optic Cables?  Contact LD4 Recycle  


Learning Important Information From A Found Cable Scrap

While walking down the street near the FOA office, we found this cable laying in the gutter. What a find! A short length of Corning Rocket Ribbon 864 fiber cable left over from an installation by a contractor.

Corning RR Cable

We brought the cable back to our office with the intention of opening it up and creating a video about the construction of this modern high fiber count cable, but something got our attention first. The cable had a very long line of printing on it with lots of interesting and useful information. So before we started deconstructing it, we decided to photograph the printed information and interpret it. That turned out to be an important part of the information we learned from the cable. Then, as you will see below, we dissected the cable and learned even more.

Red more about what this cable marking tells you and what the cable looks like when you open it up to prepare for splicing.


Help On Color Codes (Including Copper Cabling And Fiber Optics)

Here are the links to download your own FOA Guides to Fiber Optic Color Codes
FOA Guide to Fiber Optic Color Codes (print your own version) PDF  
FOA Guide to Fiber Optic Color Codes (electronic version for your smartphone, tablet or PC) PDF  
And Color Codes For UTP Cabling

FOA Guide to UTP Cabling Color Codes (print your own version) PDF  
FOA Guide to UTP Copper Cabling Color Codes (electronic version) PDF

Not all international color codes are the same. Here is a cross reference to various color codes.

Warning For Techs Doing OSP Restoration

WarningFOA received an inquiry about whether techs working on restoring OSP links should be concerned about eye safety if the link used fiber amplifiers. To answer this question, we had to do some research on fiber amplifiers. The short answer is YES, you should be concerned. The long answer is more technical and includes details that every OSP tech needs to know.

See "Fiber Amps And Restoration" in the FOA Newsletter Archives..



    

Worth Reading

Each month we read hundreds of newsletters and online articles. These are the ones we think you will find "worth reading."

FOA  has a web page with resources on fiber broadband networks and the IIJA/BEAD funding programs. 

Index Of Articles Fiber Broadband Networks  From The Fiber Optic Association - dozens of articles on fiber broadband over the last 4 years.

Cross Reference Guide to FOA Textbooks, Online Guide and Fiber U


FOA Timeline of Fiber Optic History  and the FOA video "The History Of Fiber Optics"

Fiber or copper?  AT&T PR photo from the mid 1970s

The FOA's History


Stories From The Past FOA Newsletters


Recent articles from The FOA Newsletter
Fake OTDR Traces Submitted For Testing Documentation  January 2023 Tech  
Using OTDRs To Test Transoceanic Cables And PONs February 2023 
POF - the Other Fiber March 2023 
What Do Employers Expect From A Fiber Optic Tech?  April 2023  
Are Standards Ignoring The OSP? May 2023 
FOA Has Proven Results In Fiber Optic Workforce Development June 2023 
BEAD Funding For States Announced And Analyzed  July 2023  
Wisdom From The Street (Analyzing the printing on a fiber optic cable) July 2023 
Focus On Disasters August 2023  
FOA's Role In Education and Work Done By Fiber Techs  September 2023  
The Workforce: New US DoL Bureau of Labor Statistics Telecom Tech Category  October 2023  
How Many Telecom Techs Do We Need and How Big Is The Fiber Optic Market  November 2023 
Guidelines For Fiber Optic Project Planners December 2023 
2023 Year In Review. Kentucky Shows The Value Of Fiber  January 2024.
What is Broadband? History of the Cable Modem  February 2024 
It's Just Economics. Things you need to know. March 2024.

Fiber To The Shore - Undersea cables along the coast April, 2024.
The Future Of The Fiber Tech May 2024.


Worth Reading (Or Watching Or Listening)


Are you ready for cables with 14000 fibers? HFCL in Hyderabad, India is expanding and deep in the article is this "HFCL has designed 7,000-fibre cables, which are under customer approval, and is working on 14,000-fibre cables, developed through its own engineering teams."  Times of India.

UK users warned that PSTN (public switched telephone network) in nearing shutdown. Users must move to digital services. It's not just AT&T wanting to move away from legacy telecom networks. Mobile Europe.

From office to campus: why "beyond 100 metres" Is becoming the new normal, Aginode, FTTO architecture combines fibre and copper to deliver a simpler, more efficient, and future-ready network for smart buildings and modern workplaces.

Behind the Mysterious Symbols Spray-Painted on Our Streets - NYTimes.


(We were tempted to call the following section "IoT = Internet of Thieves, Powered by AI)

OpenAI blamed a hacking event on its AI models going rogue. - Washington Post - OpenAI says it is still investigating the “unprecedented cyber incident” that led its artificial intelligence systems to break out of a testing environment and hack into another AI company

OpenAI bot’s rogue attack rattles industry leaders, policymakers and consumers - LA Times - test versions of its AI models slipped their offline confines, accessed the internet and hacked into rival startup Hugging Face, triggering alarm over uncontrolled, rule-breaking machines.

How a Gang of Thieves Pulled Off a Multimillion-Dollar Data Center Heist - NYTimes. The world’s most valuable assets are stored on rows of servers in giant, anonymous buildings. And they can be stolen.

What is social media's "hustlebro" scam? from Marketplace on Public Radio.

Top 10 US states for ISP network infrastructure attacks in 2025 - Broadband Communities

SpyCloud, the leader in identity threat protection, today released its 2026 Phishing Pulse Report, revealing that phishing attacks continue to increase in both volume and sophistication for enterprise organisations as artificial intelligence and phishing-as-a-service (PhaaS) platforms enable threat actors to launch highly effective campaigns at scale

Useful Articles And Links

Pre-Excavation Safety Checklist (PDF) - Excavation Safety Alliance - essential steps before breaking ground for underground construction.

CABL® (cabl.com) serves the business needs of the Broadband industry (including traditional cable TV, fiber, telecom and satellite providers) with employment listings, classified ads, discussion forums, and more. A contractor told us it's where they find lots of opportunities for subcontracting.

ESRI has created an ebook on GIS location technology for telecom. Use the link to download the book.

Google Video On Their Undersea Cables YouTube Slick but interesting video on how undersea cables are designed, built and used.


Worth Reading - Magazines, Websites and Newsletters

CABL® (cabl.com) serves the business needs of the Broadband industry (including traditional cable TV, fiber, telecom and satellite providers) with employment listings, classified ads, discussion forums, and more. A contractor told us it's where they find lots of opportunities for subcontracting.

The Institute for Local Self-Reliance weekly newsletter has lots of interesting articles and links.

Next Century Cities Newsletter - News from cities around the US including Detroit and New York plus small

Structured Cabling News - a website and weekly newsletter about cabling

RTI Telecom Magazine from  Brazil, in Portuguese. A revista RTI do mês de abril já está disponível online e recomendo a leitura de alguns artigos: 




Worth Reading - History & Technical

FOA was founded in 1995 - FOA's History

As part of celebrating 3 decades serving the fiber optic industry as its primary source of technical information and independent certifying body, FOA thought it appropriate to create a short history of the organization and how it has developed  to help the fiber optic industry. We also wanted to recognize the contributions many people have made to the organization over the years that made FOA what it is today.

The FOA history is on the FOA website where you can read it or link to it.
  

1983 Video of AT&T's First Test Of A Submarine Cable System From the AT&T Tech Channel archives (worth exploring!)

Richard Epworth's Optical Fiber History from his work at STL from 1966 with Charles Kao.

50th Anniversary of The Development of Low Loss Fibers A history of the development of low loss fiber, a fascinating story by Jeff Hecht on the OSA (Optical Society of America) website.

The First Transcontinental Telephone Line  began operation on  July 29th in 1915 - 3400 miles between New York and San Francisco - required over 100,000 telephone poles! Wonders of World Engineering

"Who Lost Lucent?: The Decline of America's Telecom Equipment Industry"
This is a MUST READ for managers in telecom or any industry!
 

Communications Systems Grounding Rules: Article 800 provides specific requirements  by Michael Johnston,  NECA Executive Director of Standards and Safety in EC Magazine

How To Build Rural Broadband, Learning From History
In the August 2021 FOA Newsletter, we published a lengthy article on rural broadband and compared it to rural electrification in America in the last century. Much of the comparison was based on an article written in 1940 by a USDA economist, Robert Beall, called "Rural Electrification."  If you are interested in or involved in rural broadband, we recommend you read the article "How To Build Rural Broadband, Learning From History" in the August 2021 FOA Newsletter and read the Beall article also.


Recycling Fiber Optic Cable -
Contact:
Steve Maginnis
LD4Recycle/ CommuniCom Recycling
(Visit website)
sm@LD4Recycle.com
803.371.5436


Sumitomo's Ribbon Splicing Guide - download from one of the leaders in splicing.

OFS also has an excellent website and blog of tech articles worth browsing.

IEC 60050 - International Electrotechnical Vocabulary - An extensive dictionary for fiber optics in English and French. Highly technical - this is one definition: "mode - one solution of Maxwell's equations, representing an electromagnetic field in a certain space domain and belonging to a family of independent solutions defined by specified boundary conditions"

Restoration: If you are interested in restoration - aren't we all? - you should also read this article in dpPro magazine by FOA President Jim Hayes: Damage Protection Requires Looking Overhead As Well As Underground - dpPRO Magazine - about the problems with aerial cables. His previous article for the magazine was New Techniques for Fiber Optic Installation.

DIRT Report On Damage To Utilities Common Ground Alliance (CGA) annual DIRT report provides a summary and analysis of the events submitted into CGA’s Damage Information Reporting Tool (DIRT) for the year 2018. The complete report is available for download here. In addition, there is an interactive dashboard that allows users to filter the data more  by factors contributing to damages.

Fiber Trivia From Corning.

VIAVI Books On Fiber Optic Testing (2 volumes) 

books  book 2

Besides the FOA reference materials, two JDSU/VIAVI textbooks, Reference Guide to Fiber Optic Testing, Volumes 1 and 2,  were used as references for some of the FOA courses and are recommended for instructors and students. The books are available from VIAVI as eBooks and the everyone should download them and recommend them to others.Download yours now. Volume 1. Volume 2. Viavi Books

Ciena's Submarine Cable Handbooks (4 to download)

How OFS Makes Fiber
Interesting YouTube video on how fiber is made. Perhaps a little too much "show biz" but fascinating. If you have ever seen fiber manufacture, look at this video. You will be amazed at how big preforms have become!

The True Cost of Telco Damages (what backhoe fade or target practice can cost)



Q&A

When readers ask us questions, we genrally refer them to FOA resources where they can find the answer to their question and many more. We first send them to the FOA Guide which is the table of contents for the FOA technical resources. There they can find pages indexed by topic and a search engine for the FOA website. It also links them to FOA videos and courses on our free online learning site Fiber U.

The FOA Fiber FAQs Page (FAQs = frequently asked questions) gathers up questions readers have asked us (which first ran in this newsletter) and adds tech topics of general interest.





Good Question!

Tech Questions/Comments From FOA Newsletter Readers 

More Q&A in the FOA FAQs Page  

CFOT Prerequisite For CFOS/D
Q:I want to get the CFOS/D Fiber Optic Network design and Project Management certification but why do I have to take the CFOT first - I want to be a “designer" and not an “engineer."
A: In order to design a fiber optic network and manage the project (remember the CFOS/D is now Design AND Project Management) one must understand the basics of fiber optics, communications networks, components and installation. That is the CFOT. The CFOT is not for engineers; it is the basic knowledge that all professionals in fiber optics need to know. Most CFOTs are installers who learn the basic knowledge, skills and abiities (KSAs) from the CFOT the proceed to Specialist certifications in Splicing, Testing, OSP (outside plant which includes construction and installation for OSP cable plants) or for some, Design/PM.

FTTH Installation
Q: The way the fibre broadband to my house has been installed means that the 'cable' junction in the grass verge just outside my boundary is immediately under a plastic cover (it actually touches the underside of that cover). Not surprisingly the fibre was cut when the Council came through with their lawnmower etc. Surely the installation isn't compliant? Please advise because the repair was to replicate the above!
A: It is a dumb way to place the cable so close to the surface. In most areas the cable must be at least 20 cm/8 inches below the surface, but local codes can be different. We suggest putting markers over where the cable runs so they might be careful in the future.

Docmentation
Q: Has there ever been any thought to creating a standard for documentation of fiber assets? As to minimums, like to haves, and not needed.  I've been a part of many companies, and the documentation varies widely from company to company. Maybe this is too broad a subject considering the number of products available and the formats they can come in, but, wow, it would be great to send and receive files within the industry knowing that I wouldn't have to translate basic items between each company.
A: It certainly makes sense. TIA has such a standard for premises cabling documentation as part of the TIA-568 standard - TIA-606 for cabling administration. There is nothing similar for outside plant that we are familiar with, at least as a standard, but numerous documentation software solutions exist that offers ways to do it. Perhaps the Telcordia Blue Book covers that.
FOA created it's own installation standard (https://foa.org/NECA301-MO.html) because no standard body did it, but we do not go into detail on documentation.. When we searched for "fiber optic cable documentation” half the links were to the FOA.

Are Tier 1 and Tier 2 Test Methods Used In International Standards?
Q:
Has the concept of Tier 1 (OLTS) and Tier 2 (OTDR) testing which is used in TIA structured cabling standards been adopted into any international outside plant standards?
A:
We asked some of our contacts in the test equipment business. "The OLTS and OTDR measurement methods used in TIA Tier 1 and Tier 2 testing are fully adopted in international outside plant standards such as ITU‑T, IEC, and ISO/IEC. However, these standards generally do not formalize the concept as “Tier 1” and “Tier 2.” Instead, they specify required measurements (e.g., insertion loss via OLTS) and complementary characterization methods (e.g., OTDR traces) without using a tiered terminology. In practice, OSP deployments typically use both methods, but within a different framework than TIA structured cabling certification."


How Long and How Fast?
Q:
How much Capacity per pair of  Fiber can be generated / get  from 144 core of a fiber on 20000km distance?
A:
Currently using coherent transmission and DWDM, service providers are sending ~ 12 terabits/sec on a fibe pair, and fiber amps can go as long as needed. But where would you have a 20,000km/12,500 mile link?


How Long Do Fiber Optic Cables Last?
Q: I work at a large industrial facility with several buildings connected by fiber optic cables. The fiber cables run through underground conduits between the buildings. Many of the fiber cables were installed 20 to 25 years ago. Is there any general industry guidance on when cables such as ours should be replaced solely based on the age of the cable?
A: The question you ask is one often asked. Usually it refers to the outside plant cables that have been used for many years - some now approaching 40 years like the optical power ground wire (OPGW) used by electrical utilities and some telco cables installed in the same era. Cable manufacturers are not very specific about cable lifetimes, but the standard today is cables are designed to last 40 years or more. Cable installed 20-25 years ago should be still serviceable for years to come. Some cables may suffer from moisture migration which can cause attenuation increases and fiber brittleness. Brittleness is generally not a problem is the fibers are undisturbed but it is a good reason to not disturb them. Most cable plants are not replaced unless they suffer damage - weather and wildfires are a big problem for serial cables, flooding and freezing for underground cables - or the owner is ready to upgrade communications systems and needs more modern, higher performance fibers.
Our advice would be to not disturb the cables you have if systems are working properly. If you are in a “nonstop” environment that would be badly harmed by loss of communications and you want to have a backup, you could hedge your bets and install ducts for replacement. cables. If there is space in the ducts, you can install microducts or fabric ducts in the same conduits and install backup cables. You may read advice that says cables need maintenance like cleaning connectors and testing periodically. That’s bad advice; it’s more likely to damage the cables. Our advice on cables is install them, lock them up and don’t worry. But have a restoration plan. Have documentation on the cables, spares and be prepared to repair or replace them quickly. See https://foa.org/tech/ref/restoration/rest.html

Hybrid cable For Aerial Installation
Q: Is there a hybrid cable (fiber + conductors (2 or 4)) that can be aerial lashed?
A: Practically any outside plant cable can be installed aerial if it is within the weight limits of the messenger being used. Cables with fiber and copper conductors are used for connections to remote electronics or cameras.

Gloves for Splicing?
Q:
What’s the FOA’s (or your personal) stance on wearing gloves whilst splicing?

A: Wearing gloves may recommended for preparing metallic armored cables because of the danger of cuts. For regular cables, gloves may be recommended for those who use knives to open cables, a practice still used. However for splicing fibers where some recommend them to prevent sticking yourself with fibers, it hampers fiber handling and slows the work down. We do not recommend gloves except for prepping certain types of cables.

Are Splices Too Close Together A Problem?
Q:
When installing fiber in an plant. Is there a minimum distance that two splices should be apart? ;
A: The recommendation in the past was to bot have splices close together since slight reflectances at the splices could cause an interference problem with laser systems. The recommendation was to keep splices 30-100m apart. IT was especially noted if you had to splice in a section of cable to repair a cable break. However we have not heard this in recent history, perhaps because fusion splices are so good. We asked a number of FOA's technical advisors for their opinions. Their feedback is the problem of reflectance causing problems at closely spaced splices seems to have disappeared. It’s a matter of better splicing machines and more consistent fibers, and also a matter of lasers being engineered to work better in links.

Copper Tech Wants To Learn Fiber Optics
Q: I am originally from copper installations and faults finding. I would like to get involved in Optic fibre faults and finding, how do I go if there is a possible training it will be highly appreciated,
A: Just learn about fiber, especially fiber testing and troubleshooting. Fiber U has courses you can take for free.

OSP Installation Standards
Q: I'm looking for standards for fiber optic OSP installation.
A: The whole issue of OSP standards has been one FOA been trying to get standards bodies interested in for years with little success, probably because it is an enormous project. Right now there are two documents that address OSP cable plant:

ITU-T    Technical Report, TR-OFCS Optical fibres, cables and systems, (3 July 2015)
As you can see, the ITU document is almost 10 years old and a lot has changed in that time.

The Other is the Telcordia Blue Book - Expensive but thorough
Telcordia Blue Book - Manual of Construction Procedures
Document Number SR-1421, Issue Number 07, Issue Date Jan 2023

Is The FOA CFOT® A License?
Q:
Can you use a CFOT certification to install fiber and charge for it? Or do you need other licenses as well? ;
A:
FOA Certification is considered evidence of competence and accepted worldwide by many companies, groups, etc. Licenses are a legal credential required by local authorities to conduct business for anything from a barber to a truck triver to contractors doing fiber or other work. Most locales require a license as a contractor which may require a fiber specialty. You need to investigate this with your local authorities.

Updating FOA Courses And Reference Materials
Q: How often are FOA courses updated? And when they get updated, what happens to those who would have done a previous version?
A: The FOA certifications are updated as needed to stay current with technology and applications. Updates are incremental and we do not require current certification holders to retake courses or exams. 

Past questions can be found on the FAQs page.


Fiber Optic Color Codes Reference Chart
Q: Has anyone made a fiber optic pocket reference chart that has cable color orders, frequencies, or other commonly used info on it?
A: The FOA has a page on its Online Guide that covers color codes (https://foa.org/tech/ColCodes.htm). It is the most popular page in the FOA Guide! It works great with a smartphone.


More Q&A in the FOA FAQs Page  

 


Dig
                    Once

The word on the "Dig Once" program is getting out - FOA is getting calls from cities asking us for information and advice. Here are some links:

The DoT page on the administration’s Executive Order: http://www.fhwa.dot.gov/policy/otps/exeorder.cfm

And the one to download and hand out:
A “How To” Guide from The Global Connect Initiative: https://share.america.gov/wp-content/uploads/2016/04/6.-GCI-Dig-Once.pdf






Training
/ FiberU

News and resources to help you learn more and stay updated.

Learn about the fiber optic/ broadband workforce 

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

fiberu.org

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


The FOA has >100 videos on videos 

What Is A "Real" FOA Approved School

FOA certifications are so respected and recognized around the world that we are continually chasing down fake FOA schools or schools plagiarizing FOA intellectual property. In a way, we should be flattered, that's the saying "imitation is the sincerest form of flattery." But in order to protect the reputation and credibility of the FOA we must expose these fakes and protect the 110,000+ FOA certified techs from imitators.

If you see a school advertising FOA approved training, remember only "real" FOA approved schools can offer FOA certifications.

  • Real FOA schools are listed on the FOA school page  
  • Have FOA certified instructor(s)
  • Do not offer online certifications
  • Has access to FOA online certification tests
  • Every real FOA certified tech has an online credential
  • No FOA schools are authorized to certify FOA Instructors


What Is An FOA Credential?

As FOA celebrates our 100,000th CFOT®  certified technician, introduces the "FOA Badge In Fiber Optics" for others working in the field and adds new courses at Fiber U which offer a "Certificate of Completion," it's a good time to explain the differences between them. FOA has created a page to explain the differences in certifications, certificates and badges.

All FOA Certification Credentials Are Now Online
All FOA Certified Fiber Optic Technicians now have their certification credentials online.
if your FOA certification has not expired you should have been notified you have an online credential. If you did not get notification it may be because FOA did not have a valid email for you. Contact FOA to inquire about your certification credential.


More about FOA's network of approved training organizations.



The Types of Work Done By Fiber Techs And How It Affects Training

FOA install banner

 What is a fiber optic technician? What kinds of work do they do? Those topics were the center of FOA discussions with the US Department of Labor Bureau of Labor Statistics that led to the new job category of "Telecommunications Technician" on the BLS website. The focus of this job category is primarily the installation and operation of the fiber optic cable plant, but one should not forget the cable plant must be designed also as part of a more extensive communications network.

In our discussion with the BLS analysts, we pointed out the various stages of a fiber optic communications network project and how techs with various knowledge and skill sets are needed and involved in every step. This web page on the fiber optic workforce describes how FOA defines these stages of a project and the skills of the techs needed. This is not unique to FOA; it's what has been traditional at telecom companies forever.



FOA Schools

  FOA's roster of approved schools continues to grow as more organizations recognize our expertise in workforce development and our comprehensive support for getting new schools started. FOA has over 25 years experience and over 100,000 certified fiber techs (with ~140,000 certifications). As a non-profit organization founded by the industry specifically to develop a competent workforce, FOA provides the consultation, curriculum and contacts to get schools started as a free service to new schools.

Need A Fiber Optic Course Onsite? Invite an FOA School To Come To You

Complete listing of FOA Approved Training Organizations 


fiberu.org

Fiber U offers dozens of free online self-study programs.

Fiber U "Basic Fiber Optics" Online Self-Study Course Now In Spanish
Curso Básico de Fibra Óptica de Fibra U en español.

Here is the new Fiber U "Fiber Optic Safety" self-study program. Take the course and get your certificate of completion.

Fiber U MiniCourses: Got An Hour Or Less? Learn Something New About Fiber Optics.

All these free courses and many more are available at Fiber U.



What Fiber Techs Don't Know -

These are some of the topics that we have noticed are answered incorrectly more often in FOA and Fiber U tests.

Most of the questions missed are on testing.

1. OTDRs - particularly what information is in the OTDR trace.

2. The difference between dB and dBm

3. Loss budgets - both the concepts and doing the math

4. Insertion loss testing - single-ended or double ended for testing patchcords or cable plants, how to set 0dB references

5. Units of measure - fiber is measured in microns, wavelengths in nanometers, etc.

At FOA, we're working to add Fiber U MiniCourses on these topics and working with our schools to emphasize these topics in their classes.

If you are going to be taking a FOA certification course or test in the near future, these topics should be on your final exam study list.

What We Learn From Hands On Labs
We learn about students performance in hands-on labs from the feedback of our instructors and our own experiences too. One big problem is the use of hand tools. Growing up today, you learn how to use keyboards, mouses and touch screens, but decades ago, you also learned how to use basic hand tools. This is big enough of a problem that we're considering adding some video lessons on basic hand tools to prepare students for cable prep, termination and splicing that require the use of hand tools.

fiberu.org

FOA offers free online self-study programs at Fiber U. Many users are preparing for FOA certification programs - taking courses at our schools or using the Direct Certification program. Some of our schools are requiring Fiber U programs as prerequisites for their classroom courses so they can spend more time on hands-on activities.




Publications
/ Resources

FOA
                        Guide





Cross Reference To FOA Tech Materials
FOA has so much technical reference material, we created a cross reference guide to the textbooks, Online Guide and Fiber U courses, all the FOA technical information. Besides the textbooks, online Guide and Fiber U, each section of the Guide also includes links to the 100+ FOA videos available.

Cross Reference Guide to Textbooks, Online Guide and Fiber U


FOA Guide To Fiber Optic Workforce Development

To help those new to fiber optic workforce development, FOA has created a web page we call  "Fiber Optic Workforce Development."  In this page, we share what we have learned about the fiber optic workforce, who they are and how they learn their trade. We discuss what defines a fiber optic tech and how they should be certified.

Read the FOA Guide To Fiber Optic Workforce Development online.



New Edition Of FOA Textbook On Fiber Optic Testing

FOA Fiber Optic Testing TextbookFOA has published the Second Edition of The FOA Reference Guide To Fiber Optic Testing. The textbook has been updated to include new technology, equipment and practices plus a more comprehensive index.

The FOA testing textbook is the reference for FOA CFOS/T Specialist Certification In Fiber Optic Testing in classroom training and online training at Fiber U.


The FOA Reference Guide To Fiber Optic Testing - Second Edition  - 2026

320 pages
ISBN: 9798197159762
Independently published

List Price: $35.95 paperback, $16.95 Kindle
Available in paperback and Kindle versions from  Amazon.com and other booksellers.



Project Management Added To New Edition Of FOA Design Book And Fiber U Course

Design and project mgt book 2025FOA has published a new edition of its textbook on fiber optic network design, an expanded version with new material covering project management. Fiber optic network design and network management are closely related topics, both highly important in the success of a fiber project.

The new book is available as a paperback or Kindle book. You can buy it from Amazon or local booksellers worldwide. (ISBN: 9798262274611)

The Fiber U Design self study program has also been updated for project management.



New Edition of FOA's Basic Fiber Optics Textbook

FOA Reference Guide To Fiber Optics 2024It has been 5 years since we have updated the FOA Reference Guide To Fiber Optics, so it is certainly time for an update. The latest version is different enough we call it a new edition. Many of the updates are for new technologies which are reshaping the fiber optic industry like coherent transmission, BI fibers, etc. We've also added a section on the fiber optic workforce which has much relevance because this book is used to train those entering the workforce.

We've also worked on making the book more readable, adding formatting that eases reading and a new comprehensive index.

The new edition of the FOA Reference Guide To Fiber Optics is available  from Amazon and booksellers worldwide.



Update - 2nd Edition: Fiber Broadband (Paperback and Kindle)

FOA Guide To Fiber BroadbandThis book is not the typical FOA technical textbook - it is written for anyone who wants to understand fiber broadband or fiber optics or the Internet. It's also aimed at STEM teachers who want to include communications technology in their classes. This book will try to explain not only how fiber broadband works, but how it was developed. It is intended to be an introduction to communications technology appropriate for a communications course at almost any level (junior high, high school or college,) for managers involved with broadband projects, or for anyone who just wonders how all this stuff works.

The Fiber Optic Association Guide To Fiber Broadband  

Paperback and Kindle versions available from Amazon or most booksellers.



Translations of FOA Textbooks

Guia de Referência sobre Fibra Óptica da FOAFOA is a very international organization and it works hard to accommodate the language needs of everyone. We have been translating our books and website into the languages most requested, and this month, we add two more textbook translations. We also want to thank Jerry Morla, FOA CFOS/I instructor and Director who has been doing the recent translations into Spanish, his native language.


Here is a listing of all the FOA textbook Translations

Spanish Editions:

Guía de Referencia de la Asociación de Fibra Óptica (FOA) Sobre Fibra Óptica: Guía de estudio para la certificación de la FOA  Amazon
La Referencia de Cableado para Predios de la FOA: Guía para Certificación de la FOA   Amazon
La Asociación de Fibra Óptica Manual de Fibra Hasta el Hogar : Para Planificadores, Gestores, Diseñadores, Instaladores y Operadores De FTTH  Amazon
Guía de Referencia de la FOA sobre Diseño de la red de fibra óptica: Guía de Estudio para la Certificación de la FOA Amazon

And the FOA Reference Guide To Fiber Optics:
French Edition: Le Guide de référence de la FOA pour la fibre optique et et guide d'étude pour la certification FOA: Guide d'étude pour la certification FOA  Amazon
Portuguese Edition: Guia de Referência sobre Fibra Óptica da FOA : Guia de Estudo para a Certificação da FOA  Amazon

The subject matter of these books is also translated in the FOA Guide online.



FOA Video Lectures On YouTube

Did you know YouTube will close caption videos in many languages?

YouTube
                      translations
Sign in with Google to get translations for closed captioning. Click on the settings icon (red arrow.) Choose "Subtitles".  English is the default language. Click on the arrow after "English (auto-generated) >". In the new window click on "Auto-translate" and choose the language you want. 


FOA Loss Budget Calculator On A Web Page 5/2020

FOA has written many articles about loss budgets, something everyone involved in fiber optics needs to know and needs to know how to calculate. We recently discovered how to get a spreadsheet ported to a Web page, so we created this web page that calculates loss budgets. We have an iOS loss budget app, but with this web page, you can calculate loss budgets from any device, smart phone, tablet, laptop, or desktop computer that has web browsing capability.

FOA Loss Budget Calculator 

Bookmark this page (especially on your smartphone): FOA Loss Budget Calculator Online



FOA                      Guide

We are continually updating the Online Reference Guide to keep up with changes in the industry and adding lots of new pages of technical information. When you go to the FOA Guide Table of Contents to see the latest updates - look for New.





FOA Books

FOA Reference Guide to Fiber Optics book FOA                        text in Spanish FOA Text in French FOA Reference Guide to Premises Cablng
                          book  FOA Reference Guide to OSP Fiber Optics
                          book
 
FOA
                        Reference Guide to Fiber Optic OSP Construction
                        book 
FOA                        Reference Guide to Fiber Optics Design book FOA Reference Guide to Fiber Optics Testing
                        book  FOA
                        Reference Guide to Fiber Optic OSP Construction
                        book

FOA Guide To Fiber Broadband

Fiber Optics (4 languages), Premises Cabling, OSP fiber and construction, Network Design, Testing, FTTH Handbook and our latest - FIber Broadband

   The FOA has it's own reference books for everyone working in fiber optics - contractors, installers and end users as well as for use as textbooks in classes at educational institutions. They are available as printed books or Kindle at much lower prices than most textbooks since we self-publish and sell online, cutting out the middlemen. Click on the book images for more information. The Reference Guide To Fiber Optics is also available in Spanish, French and Portuguese. The Design book is available in English and Spanish.

Click on any book for more information about it.

FOA has reprinted

Lennie Lightwave
"
Lennie Lightwave's Guide" on its 25th anniversary in a special print edition.
 
Lennie and Uncle Ted's Guides are online.
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

Resources For Teachers In K-12 And Technical Schools
Teachers in all grades can introduce their students to fiber optic technology with some simple demonstrations. FOA has created a page for STEM or STEAM (science, technology, engineering, arts and math) teachers with materials appropriate to their classes. Fiber Optic Resources For Teachers.

 


Safety


On Safety

New Fiber U Course: Fiber Optic Safety

fiber USafety must be the first concern of everyone involved in a fiber optic project, including those planning, designing, managing or supervising and of course those doing the installation.

FOA is often asked about safety for fiber optics. Some inquiries ask where it's covered in the FOA Online Guide or textbooks or if we have a course on safety at Fiber U. Almost all Fiber U Courses have lessons covering safety, because safety is important in every aspect of a fiber optic project.

This new Fiber U course will focus on safety alone. There are two lessons in this course, fiber optic construction and fiber optic installation. The dividing line between the two courses is the installation of the fiber optic cables. Construction leads up to and/or is completed when the cables are installed. Installation begins when the fiber tech installs the cable, then completes the splicing, termination testing and documentation. The overlap between the two is the installation of the cables where both construction personnel and fiber optic techs are involved. 

Here is the new Fiber U "Fiber Optic Safety" self-study program. Take the course and get your certificate of completion.

Enhance your safety with the FOA Safety Vest.

FOA Safety Vest


The FOA is concerned about safety!
FOA considers safety an integral part of all our programs, curriculum materials and technical materials. We start all our textbooks and their online versions with a section on safety in the first chapter, like this: Before we get started - Safety First!
 
There are pages on the FOA Guide on Safety procedures Including Eye Safety  and. Digging Safely 

And a YouTube lecture: FOA Lecture 2: Safety When Working With Fiber Optics
 
In our OSP Construction Section, these pages cover many safety issues including those related to the construction of the cable plant: Project Preparation And Guidelines, Underground Cable Construction, Underground Cable Installation and Aerial Cable Installation.
 
There is even a safety poster for the fiber activities: PDF Safety Rules For Fiber Optics
 
Other Safety Resources:

There is a toll-free "call before you dig" number in the USA: Dial 811. See www.call811.com for more information in the US. Here is their map of resources by states.

In Canada, it's "Click Before You Dig.com" They also have a page of resources by US states and Canadian provinces.

The Common Ground Alliance has an excellent "Best Practices Guide" online

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


Why We Warn You To Be Careful About Fiber Shards

fiber in
                      finger
Photo courtesy  Brian Brandstetter,  Mississauga Training Consultantcy




About The FOA

About The FOA

Contact Us:  http://www.foa.org or email <info@foa.org>





FOA on LinkedIn


FOA has a company page and four LinkedIn Groups


FOA - official company page on LinkedIn
 
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


Grupo de La Asociación de Fibra Óptica FOA (Español)  
What is The FOA? 

The FOA is a, international non-profit educational association chartered to promote professionalism in fiber optics through education, certification and standards. 

Founded in 1995 by a dozen prominent fiber optics trainers and  leaders from education, 
industry and government as a professional society for fiber optics and a source of independent certification, the FOA has grown to now being involved in numerous activities to educate the world about fiber optics and certify the workers who design, build and operate the world's fiber optic networks.

Read More  

FOA History  

FOA Timeline of Fiber Optics  


Contact Us
The Fiber Optic Association Inc.
https://www.foa.org or email <info@foa.org>
Use the
Contact Form
 


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.




fiberu.org

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


 

Contact Us
The Fiber Optic Association Inc.
       
The FOA Home Page











Fiber Optic Timeline  








(C)1999-2026, The Fiber Optic Association Inc.


 FOA Logo Merchandise

New FOA Swag! Shirts, Caps, Stickers, Cups, etc.
FOA T Shirt
The FOA has created a store on Zazzle.com 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.
 


Privacy Policy (for the EU GDPR): The FOA does not use cookies or any other web tricks to gather information on visitors to our website, nor do we allow commercial advertising. Our website hosts may gather traffic statistics for the visitors to our website and our online testing service, ClassMarker, maintains statistics of test results. We do not release or misuse any information on any of our members except we will confirm FOA certifications and Fiber U certificates of completion when requested by appropriate persons such as employers or personnel services.
Read the complete FOA Privacy Policy here.