OM5 is previously known as wide band multimode fibre or WB MMF.
The IEC/ISO standards bodies have recently agreed that WBMMF (Wide Band Multimode Fiber) is the nomenclature of OM5. This specifically relates to 50/125 laser-optimized multimode fiber or LOMFF that has been developed for use within the 850nm to 950nm range for either single or multi-wavelength transmission.
The effective modal bandwidth for OM5 fiber has been specified at the lower and upper wavelengths of 4700 MHz.km at 850nm and 2470 MHz.km at 953nm respectively.
This decision was made in October 2016 by the ISO/IEC Joint Technical Committee 1 (JTC 1) Subcommittee 25 (SC 25) Interconnection of Information Technology Equipment.
The Telecommunications Industry Association (TIA) adopted the term OM5 in certain standards it produces. In June 2016, TIA’s TR-42.12 Optical Fibers and Cables Subcommittee approved the ANSI/TIA-492AAAE standard, which specifically relates to WBMMF.
IMPORTANT ASPECTS ABOUT OM5 FIBER OPTICS STANDARD:
Wideband uses wavelengths to increase each fiber’s capacity by at least a factor of four, which allows at least a fourfold data-rate increase Instead of using four separate fibres to transmit four optical signals, the signals can be sent down one fibre over four separate operating windows.
In an OM5 multimode fiber link, data rate and maximum reach are limited by:
OM5 is especially life-changing for data centers where space is extremely important. Imagine being able to send the same data that would usually take 32 fibre cores – down just 8 cores.
The signals are spaced 30nm apart effectively making each transmission signal individual. Importantly, Signals can get from A to B with relatively low cross-talk. This means that you will be able to send 4 signals down 1 core at the wavelengths 850nm, 880nm, 910nm and 940nm.
The fiber is also 50 micron, which means all existing OM4 installations can stay in place and you can through patch directly to the new OM5 cable. However, the entire fibre length will have the characteristics of OM4.
It is expected that all new multimode installations will now be OM5. This wideband backbone cable will ensure all future network demands will be easier to meet!