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Gigabit fiber optic single-mode quad-core

Gigabit fiber optic single-mode quad-core

Gigabit fiber optic single-mode quad-core - MADIBA BAY OPTICS

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Single-mode quad-core fiber optic modules, such as QSFP 100G LR4, deliver 100 Gigabit Ethernet over four 25G lanes on single-mode fiber for long-distance connectivity.

Overview

Single-mode quad-core fiber optic modules, commonly referred to as QSFP 100G LR4, are designed for long-reach 100G Ethernet links over single-mode fiber (SMF, typically G.652) using a quad-lane architecture. Each module splits the 100G signal into four separate 25G channels, transmitted over four wavelengths in the 1310nm range, and recombined at the receiving end to form a single 100G data stream . This approach allows high-speed data transmission while maintaining compatibility with standard single-mode fiber networks.

Key Specifications

  • Transmission Distance: Up to 10 km over standard single-mode fiber (OS2) with duplex LC connectors .
  • Wavelength: Four CWDM wavelengths around 1310nm, optimized for low attenuation and manageable dispersion over long distances .
  • Form Factor: QSFP (Quad Small Form-factor Pluggable), hot-swappable, compact, and suitable for high-density deployments .
  • Quad-Core Architecture: Four optical lanes (cores) carry 25G each, enabling 100G total throughput .
  • Compatibility: Works with switches, routers, and interconnect systems supporting 100G Ethernet; interoperable with IEEE-compliant 100GBASE interfaces .

Applications

  • Data Centers: High-bandwidth interconnects between racks and aggregation layers.
  • Campus and Metro Networks: Long-distance links between buildings or across metro-edge facilities.
  • High-Performance Computing: Low-latency, high-throughput connections for compute clusters.

Additional Features

  • Breakout Capability: QSFP 100G modules can connect to four 25G SFP ports using breakout cables, allowing flexible network design .
  • CWDM-Friendly Design: The 1310nm wavelength range supports coarse wavelength division multiplexing, enabling cost-effective multi-channel deployment without the tighter spacing required by DWDM systems .
  • Operating Conditions: Typically supports temperatures from +10°C to +60°C with an optical link budget sufficient to handle patch panel losses in data centers .

Summary

Single-mode quad-core fiber optic modules like QSFP 100G LR4 provide a high-speed, long-reach, and standardized solution for modern 100G Ethernet networks. Their four-lane architecture, CWDM wavelength multiplexing, and compatibility with standard single-mode fiber make them ideal for data centers, campus networks, and metro-edge deployments, offering both flexibility and cost efficiency .

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