Color sequence of 48-core steel wire optical cable

A 48-core optical cable uses the TIA-598-C 12-color sequence repeated across four buffer tubes, with each fiber inside the tube following the same 12-color order.

Standard 12-Color Sequence

The TIA-598-C standard defines the following 12 colors for individual fibers:

1. Blue
2. Orange
3. Green
4. Brown
5. Slate (Gray)
6. White
7. Red
8. Black
9. Yellow
10. Violet
11. Rose (Pink)
12. Aqua

Application to 48-Core Cable

For a 48-core cable, the fibers are typically organized into four buffer tubes, each containing 12 fibers. Each tube is assigned a distinct tube color (commonly Blue, Orange, Green, Brown) to differentiate the groups. Inside each tube, the fibers follow the standard 12-color sequence.

Example Mapping

• Tube 1 (Blue Tube): Fiber 1–12 → Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua
• Tube 2 (Orange Tube): Fiber 13–24 → Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua
• Tube 3 (Green Tube): Fiber 25–36 → Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua
• Tube 4 (Brown Tube): Fiber 37–48 → Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua This system ensures that each fiber has a unique identification by combining the tube color and the fiber color within the tube. For example, Fiber #34 would be the 10th fiber (Violet) in the 3rd tube (Green) .

Notes

• For cables exceeding 12 fibers, the 12-color sequence repeats in each tube, sometimes with black stripes to maintain uniqueness in very high-count cables .
• Tube colors may vary slightly depending on manufacturer, but the internal fiber sequence remains consistent with TIA-598-C.
• This color-coding system simplifies installation, splicing, and maintenance, reducing errors in high-density optical networks . By following this scheme, technicians can quickly identify and manage fibers in a 48-core steel wire optical cable, ensuring accurate connections and efficient network deployment.