OM3: Laser - Optimized Multimode Fiber (LOMMF)
OM3 minimizes Differential Mode Delay (DMD). It enables a 10G SR transmission distance of up to 300m and a 100G SR4 transmission distance of 100m. As a mainstream choice for early data center short - reach interconnections, it laid the foundation for high - speed short - distance optical communication in data centers.
OM4: Enhanced Laser - Optimized Multimode Fiber
OM4 greatly increases the effective bandwidth in the 850nm band. It supports 100G SR4 transmission over 150m, 400G SR8 over 100m, and 800G SR8 over 70 - 100m. Currently, it is the standard multimode fiber for short - reach interconnections within data centers and AI computing clusters, meeting the growing bandwidth demands of emerging applications like AI.
OM5: Wide - Bandwidth Multimode Fiber (WBMMF)
OM5 adopts a wide - band composite refractive index profile design. This design counteracts modal dispersion differences at different wavelengths, maintaining a high effective bandwidth across the entire 850 - 950nm range. Meanwhile, it is compatible with 850nm single - wavelength applications, providing more flexibility for multi - wavelength and high - speed transmission scenarios.
OM6: Next - Gen High - Bandwidth Multimode Fiber
Designed for single - channel 200G PAM4 VCSELs, OM6 further optimizes the refractive index profiles of the 850nm and 9xx nm bands. The goal is to increase the 850nm Effective Modal Bandwidth (EMB) to over 8000MHz·km, preparing for even higher - speed short - reach optical interconnections in the future and meeting the stringent requirements of next - generation high - speed data transmission.
From OM3 to OM6, each generation of multimode fiber technology is tailored to the evolving needs of data centers, AI, and high - speed short - reach optical communication, continuously pushing the boundaries of bandwidth and transmission performance.
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