OM2, OM3 and OM4 multimode fibers have traditionally been measured for attenuation at 850 and 1300 nm. The new TIA-492AAAE wideband multimode fiber standard has an additional attenuation requirement at 953 nm to ensure operation across the entire wideband window, which extends from 840 to 953 nm.

A question that arises is whether 953 nm attenuation needs to be measured on wideband fibers and cables. This paper explains why it is not necessary to do so, based on the attenuation properties of optical fibers and the testing that is done by the fiber manufacturer.|OM2, OM3 and OM4 multimode fibers have traditionally been measured for attenuation at 850 and 1300 nm. The new TIA-492AAAE wideband multimode fiber standard has an additional attenuation requirement at 953 nm to ensure operation across the entire wideband window, which extends from 840 to 953 nm.

A question that arises is whether 953 nm attenuation needs to be measured on wideband fibers and cables. This paper explains why it is not necessary to do so, based on the attenuation properties of optical fibers and the testing that is done by the fiber manufacturer.

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