New TIA graded index multimode fibre specification

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TIA recently released a new document – TIA-492AAAE ‘Detail Specification for 50-µm Core Diameter/125-µm Cladding Diameter Class 1a Graded-Index Multimode Optical Fibres with Laser-Optimised Bandwidth Characteristics Specified for Wavelength Division Multiplexing’.

The TIA-492AAAE document will define a specification for multimode fibre with the necessary properties to support transmission of multiple wavelengths including and beyond 850 nm. The performance is intended to enable transmission of at least 28 Gbps per wavelength for a total transmission capacity of at least 100 Gbps per fibre to distance of at least 100 m.

Today, standard data rates exceeding 28 Gbps are delivered over multimode fibres using parallel transmission. Consequently multimode solutions have been proposed for 400G Ethernet that require 32 fibres.

TIA-492AAAE was formulated under the cognizance of the TIA’s engineering committee TR-42 on Telecommunications Cabling Systems and the TR-42.12 Optical Fibres and Cables subcommittee.