Single-mode 9/125 fiber features a 9-micron core and 125-micron cladding, optimized for long-distance, high-speed data transmission.

Overview

The "9/125" designation refers to the fiber's core diameter of 9 microns and cladding diameter of 125 microns. This narrow core allows light to propagate in a single mode, minimizing dispersion and maintaining high-quality signal transmission over long distances . Single-mode 9/125 fiber is typically classified as OS2, suitable for indoor, outdoor, and long-haul telecommunications applications .

Performance Characteristics

• Bandwidth: Effectively unlimited for practical purposes, supporting high-speed data transmission .
• Attenuation: Approximately 0.40 dB/km at 1310 nm and 0.30 dB/km at 1550 nm, allowing signals to travel long distances with minimal loss .
• Distance: At gigabit speeds, signals can travel up to 25 km at 1310 nm and 80 km at 1550 nm; at 10 Gbps, distances range from 5–10 km at 1310 nm and 30–40 km at 1550 nm .

Applications

Single-mode 9/125 fiber is widely used in:

• Telecommunications networks
• Data centers and LANs
• Cable TV and long-range networking
• High-speed Ethernet and gigabit Ethernet Its low attenuation and high bandwidth make it ideal for long-distance and high-performance network applications.

Cable and Connector Options

• Connectors: LC-LC, LC-SC, SC-SC, ST, and MTRJ, depending on installation requirements .
• Cable Jackets: PVC, plenum, or LSZH for indoor, outdoor, or riser-rated installations .
• Duplex and Multi-strand Options: Available for bi-directional communication and higher bandwidth needs, including 2-, 6-, and 12-strand configurations .
• Lengths: Patch cables typically range from 1 meter to 30 meters, while bulk cables are available in 1000-foot spools .

Summary

Single-mode 9/125 fiber (type 9125) is a high-performance fiber optic solution designed for long-distance, high-speed data transmission. Its 9-micron core and 125-micron cladding, combined with OS2 classification, low attenuation, and versatile connector options, make it suitable for telecommunications, data centers, and other high-bandwidth applications requiring reliable and precise signal transmission .