Multimode fiber is best suited for high-speed, short-to-medium range connections. Key use cases include: Common in LAN backbones and intra-building links where data rates of 1G–10G are typical and cost efficiency is essential. This guide explains the five generations of multimode fiber - OM1, OM2, OM3, OM4, and OM5 - covering their physical characteristics, color coding, bandwidth, maximum distances at different data rates, optical sources (LED, VCSEL, SWDM), and real-world applications in enterprise networks and data. Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus. Multi-mode fiber has a fairly large core diameter that enables multiple light modes to be. Multimode fiber (MMF) is an optical fiber designed to carry multiple light propagation paths—or modes—simultaneously. 5 microns, compared to the ~9-micron core in single-mode fiber. Different lights enter the core at different angles of incidence, and are then continuously reflected between the core and the cladding for transmission.
[PDF Version]