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Fiber Optic Cable Plant Nomenclature
Multimode Premises Cable Plants

Since the introduction of Gigabit Ethernet, we've seen premises cabling, designed to carry gigabit and 10 gigabit traffic using 850 nm VCSEL (laser) transmitters, moving toward standardization on 50/125 laser-optimized fiber (now universally called OM3 fiber for it's international standards designation) often with LC connectors to match the manufacturers' standard for VCSEL transceivers. OM3 cabling even has it's own color, aqua, specified in TIA-598.
If you are planning, designing, installing or using high speed premises fiber optic networks,  you should probably be recommending and using OM3 fiber and LC connectors. Within the industry, this is becoming a "de facto" standard known as "OM3 cabling." One big advantage of using a full OM3 cabling standard is that the cabling is easily identifiable by the aqua color and cannot be interconnected with legacy cabling.
Using this nomenclature does not  specify a type of cable. Unlike Category-rated UTP, fiber optic cable is available in several types (zipcord, distribution or breakout) to allow choosing a cable for the installation, saving space, weight, and, since numerous links can be combined into one multifiber cable, installation costs.
The FOA is encouraging all FOA-Approved schools to adopt the OM3 nomenclature in their training. We've added this recommendation to the FOA User's Page and will add it to the NECA/FOA 301 standard when revised.
 
Here is an example of the "OM3 Cabling" spec for designers to use in documentation:
The fiber optic cable plant will be type OM3 cabling, using laser optimized (OM3) fiber in a cable with aqua colored jacket, terminated with LC type connectors and mating adapters all colored aqua. Individual fiber cable runs will be specified by number of fibers and cable type (riser, plenum, indoor-outdoor, etc.) required by the actual installation.

Here is a table of recommended nomenclature for all fiber optic cabling types to help specify a cable plant.

Cabling System Name Fiber Type Connector Type Cable Type (Premises, + fiber count)
OM3 OM3 - 50/125 laser optimized OM3 - (default LC)
OM3/ST - ST connector
OM3/SC - SC connector
Zipcord
Distribution
Breakout
OM2 OM2 - 50/125 OM2/ST - ST connector
OM2/SC - SC connector
OM2/LC - LC connector
Same
OM1 OM1 - 62.5/125 OM1/ST - ST connector
OM1/SC - SC connector
Same

 

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