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The color of multimode indoor optical cable is

Multimode indoor optical cables are typically color-coded as orange for OM1/OM2, aqua for OM3/OM4, and lime green for OM5. Standard Jacket ColorsOM1 (62. 5/125 µm): Orange jacket, often used in legacy networks for LED light sources and short-distance links.

OM2 (50/125 µm): Grey or sometimes orange in older installations; supports higher bandwidth than OM1. OM3 (50/125 µm, laser-optimized): Aqua jacket, designed for high-speed VCSEL-based networks, supporting 10, 40, or 100 Gb/s over short distances. OM4 (50/125 µm, laser-optimized): Aqua or sometimes violet depending on the manufacturer; offers higher modal bandwidth than OM3 for longer runs.

OM5 (50/125 µm, wideband multimode): Lime green jacket; optimized for Short Wave Division Multiplexing (SWDM) but otherwise similar to OM4 for standard IEEE applications.

Connector Colors

Beige connectors: Typically used for OM1 and OM2 multimode fibers. Aqua connectors: Used for OM3 and OM4 multimode fibers, matching the jacket color. Lime green connectors: Used for OM5 multimode fibers to distinguish them from OM4.

Summary

The color-coding system, standardized under TIA-598, allows technicians to quickly identify the type of multimode fiber and its capabilities. Orange indicates legacy OM1/OM2, aqua indicates modern OM3/OM4, and lime green indicates OM5, ensuring proper installation and compatibility in indoor structured cabling environments.

The color of multimode indoor optical cable is

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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