Difference Between OM1,OM2,OM3, and OM4 Multimode Fibers

Different generations of multimode fiber are represented by the letters OM1, OM2, OM3, and OM4 (MMF). The core diameter of OM1 is 62.5 meters, while the core diameter of OM2, OM3, and OM4 is 50 meters. Standard 50m MMF fibers are OM2, while laser-optimized multimode fibers are OM3 and OM4 (LOMMF).

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