Color of 10 Gigabit Optical Cable

10 Gigabit multimode fiber cables are usually aqua (OM3) or violet (OM4), while single-mode fibers are yellow. Multimode Fiber (10 Gb/s)OM3 Fiber: Typically has an aqua-colored jacket, optimized for 10 Gb/s transmission over short distances (up to 300 meters at 10G) using VCSEL lasers. OM4 Fiber: Often comes in Heather Violet or Erika Violet, indicating higher bandwidth and longer reach (up to 400 meters at 10G).

Some manufacturers may still use aqua for OM4, but violet is a common identifier for higher-performance OM4 cables. OM5 Fiber: Features a bright lime green jacket, designed for Shortwave Wavelength Division Multiplexing (SWDM) and capable of supporting multiple wavelengths on a single fiber, suitable for 100+ Gb/s applications.

Single-

Mode Fiber (10 Gb/s)OS1 and OS2 Fibers: Always have a yellow jacket. OS1 is used for indoor, tight-buffered installations, while OS2 is designed for outdoor or loose-tube applications, supporting long-distance communication over tens of kilometers.

Summary

Aqua: OM3 multimode fiber, 10 Gb/s short-rangeViolet: OM4 multimode fiber, 10 Gb/s longer-range or higher bandwidthLime Green: OM5 multimode fiber, multi-wavelength high-speed applicationsYellow: Single-mode fiber (OS1/OS2), long-distance 10 Gb/s or higher These color codes help network engineers quickly identify the type and performance of fiber cables in data centers or enterprise networks, ensuring compatibility with existing infrastructure and optical transceivers.