In addition, multi-mode fibers are described using a system of classification determined by the ISO 11801 standard — OM1, OM2, and OM3 — which is based on the modal bandwidth of the multi-mode fiber.
As fibras multimodo tamén se identifican por un sistema de clasificación determinado polo estándar ISO 11801 --- OM1, OM2 e OM3 --- o cal está baseado no ancho de banda modal da fibra multimodo.