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Optical cable OS1

Optical cable OS1

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OS1 is a single-mode fiber optic cable designed for indoor, short- to mid-range applications, offering low attenuation and high-bandwidth transmission over distances up to 10 km.

Overview of OS1 Fiber

OS1 is a type of single-mode fiber (SMF) with a very small core diameter of approximately 9 microns, allowing light to travel in a single path, which minimizes signal dispersion and supports high-speed data transmission . This design makes OS1 ideal for indoor installations, such as inter-rack connections in data centers, enterprise backbones, and campus networks .

Technical Specifications

  • Core Diameter: 9 µm
  • Attenuation: Maximum 0.4 dB/km at 1310 nm and 0.3 dB/km at 1550 nm
  • Bandwidth: 200 MHz·km at 1310 nm
  • Maximum Distance: Up to 10 km at 10 Gbps without signal amplification
  • Construction: Tightly buffered with dual-layer protective coating (plastic + waterproof acrylate), enhancing flexibility and crush resistance

Applications

OS1 is primarily used for indoor, short-distance links where single-mode performance is required. Typical use cases include:

  • Data center inter-rack connections
  • Enterprise fiber-to-desktop deployments
  • Campus backbone networks
  • Cost-sensitive single-mode installations where flexibility and indoor routing are important

Comparison with OS2

While OS1 is optimized for indoor, short- to mid-range applications, OS2 is designed for long-distance and outdoor deployments, such as campus-to-campus links or telecom backbones. OS2 typically has lower attenuation, higher bandwidth (up to 500 MHz·km at 1310 nm), and can support distances up to 40 km at 10 Gbps . The main difference lies in cable construction and attenuation performance, not the core size, which remains 9 µm for both OS1 and OS2 .

Key Takeaways

  • OS1 is single-mode, indoor-focused, and suitable for distances up to 10 km.
  • It provides low attenuation and high bandwidth, making it reliable for high-speed networks.
  • For longer outdoor or campus links, OS2 is preferred due to its lower attenuation and suitability for extended distances.
  • OS1 and OS2 are compatible with single-mode optical systems, but the choice depends on installation environment, distance, and future upgrade plans .
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