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Multimode logging fiber optic cable models and specifications

Optical access and telecom site reference Published 07 Jan 2026

Use this reference to prepare product questions for CGWEB NETWORKS. Check interfaces, capacity, protection and installation requirements against the current product documentation.

Multimode fiber optic cables (OM1–OM5) are graded-index fibers designed for short-distance, high-speed data transmission, with core diameters of 50–62. 5 µm and support for 850–1300 nm wavelengths. Core Types and DimensionsOM1: 62.

5/125 µm core/cladding, typically orange jacket, LED light source, suitable for 100 Mbps to 1 Gbps Ethernet up to 275 m, and 10G Ethernet up to 33 m. OM2: 50/125 µm core/cladding, LED source, supports 1 Gbps up to 550 m and 10G Ethernet up to 82 m. OM3: 50/125 µm, laser-optimized (LOMMF), supports 10G Ethernet up to 300 m, 40G/100G up to 100 m, designed for VCSELs at 850 nm.

OM4: 50/125 µm, laser-optimized, supports 10G Ethernet up to 550 m, 40G/100G up to 150 m, suitable for high-performance data centers. OM5: 50/125 µm, wideband multimode fiber (WB-MMF), supports 850–950 nm for short-wavelength division multiplexing (SWDM), compatible with OM4, designed for 40G/100G/400G Ethernet. Transmission Wavelengths850 nm: Primary wavelength for VCSEL and LED sources, used in most LAN and data center applications.

1300 nm: Secondary wavelength for legacy applications and longer multimode links. 850–950 nm: OM5 supports multi-wavelength SWDM systems for higher aggregate bandwidth.

Performance Metrics

Modal Bandwidth: OM3 typically 2000 MHz·km at 850 nm, OM4 4700 MHz·km, OM5 4700 MHz·km at 850 nm and 2470 MHz·km at 953 nm. Bend Insensitivity: OM2–OM5 fibers are bend-optimized to reduce macro-bending losses, improving installation flexibility. Standards Compliance: ISO/IEC 11801, TIA/EIA-492AAAB/AAAC/AAAD, IEC 60793-2-10, ITU-T G.

651. 1, Telcordia GR-20-CORE and GR-409-CORE. Typical ApplicationsOM1/OM2: Legacy LANs, 100 Mbps–1 Gbps Ethernet, short-distance interconnects.

OM3/OM4: Modern data centers, 10G–100G Ethernet, high-speed server interconnects, cloud computing, virtualization. OM5: Future-proof data centers, SWDM systems, 40G–400G Ethernet, multi-wavelength high-bandwidth applications.

Summary Table

Fiber TypeCore/Cladding (µm)Max 10GBASE-SR DistanceMax 40G/100G DistanceWavelength (nm)Jacket ColorNotesOM162. 5/12533 mN/A850/1300OrangeLED sourceOM250/12582 m100 m850/1300OrangeBend-insensitiveOM350/125300 m100 m850AquaLaser-optimizedOM450/125550 m150 m850AquaLaser-optimizedOM550/125550 m150 m850–950Lime GreenWideband, SWDM compatibleThese specifications ensure that multimode fiber optic cables are optimized for short-range, high-speed data transmission, with backward compatibility for older systems while supporting modern high-bandwidth applications in enterprise and data center environments.

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Multimode logging fiber optic cable models and specifications

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