62.5 µm multimode fibre is set to be grandfathered (i.e. Retired but not entirely redundant) as part ISO/IEC 11801 and AS/NZS 3080 amendments.

While OM1 will still be deployed in the marketplace to match legacy systems, the utilisation on green-field sites looks to be at an end for OM1 with the minimum fibre set to be specified as OM3 (50 µm).

OM1 and OM2 were originally specified as either 62.5 or 50 µm, with the market typically specifying OM1 as 62.5 µm, while OM2 gained little market share and with the advent of laser optimised OM3 at 50 µm, OM2 saw very low levels of adoption.

The proposed adoption of OM5 (a new wideband fibre) would see the continued deployment of 2-core multimode systems as part of a generic cabling system for high speed networks over shorter distances.

Support for the use of parallel fibre optics and associated MPO connectorisation is set to continue with 12 core (one row), 24 core (two row) and 32 core (two row) being supported.

The attenuation allowance for multimode fibre of 3.5dB/km at 850nm is also under consideration; the feasibility of lowering the requirement to 3.0dB/km is currently being considered but the outcome will be based primarily on the recommendation of the IEC optical fibre cable working group (86A).

62.5 µm multimode fibre is set to be grandfathered (i.e. Retired but not entirely redundant) as part ISO/IEC 11801 and AS/NZS 3080 amendments.

While OM1 will still be deployed in the marketplace to match legacy systems, the utilisation on green-field sites looks to be at an end for OM1 with the minimum fibre set to be specified as OM3 (50 µm).

OM1 and OM2 were originally specified as either 62.5 or 50 µm, with the market typically specifying OM1 as 62.5 µm, while OM2 gained little market share and with the advent of laser optimised OM3 at 50 µm, OM2 saw very low levels of adoption.

The proposed adoption of OM5 (a new wideband fibre) would see the continued deployment of 2-core multimode systems as part of a generic cabling system for high speed networks over shorter distances.

Support for the use of parallel fibre optics and associated MPO connectorisation is set to continue with 12 core (one row), 24 core (two row) and 32 core (two row) being supported.

The attenuation allowance for multimode fibre of 3.5dB/km at 850nm is also under consideration; the feasibility of lowering the requirement to 3.0dB/km is currently being considered but the outcome will be based primarily on the recommendation of the IEC optical fibre cable working group (86A).

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