The use of optics for data transmission in local area networks has seen the emergence of many different types of multi-mode optical fibre over the past 30 years. This started with 100 micron core fibre followed with the OM1 fibre standard back in 1989. Multimode fiber (MMF) is essentially designed to transmit multiple light modes (paths) simultaneously. MMF types are divided into "OM" classes—OM1, OM2, OM3, OM4. 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. Introduction Multimode optical fiber represents one of the most critical infrastructure components in modern data centers, enterprise networks, and. Multimode fibers (MMFs) have been a key component in short-reach transmission systems for over 50 years and remain the predominant transmission medium for Vertical Cavity Surface-Emitting Laser (VCSEL)-based short links in data centers. OM1 fibres are graded-index fibres with a 62.
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