Bangladesh Single-fiber bidirectional OSFP
Single-fiber bidirectional OSFP modules enable high-speed, cost-efficient optical communication over a single fiber strand, reducing fiber usage by up to 50% while supporting long-distance transmission.
Overview of Single-Fiber Bidirectional (BiDi) Technology
Single-fiber bidirectional (BiDi) transmission allows simultaneous sending and receiving of data over a single optical fiber by using wavelength division multiplexing (WDM). Each end of the fiber transmits and receives on different wavelengths (e.g., 1310nm for Tx and 1550nm for Rx at one end, reversed at the other), ensuring interference-free communication . A WDM coupler multiplexes the signals onto a single fiber and demultiplexes them at the receiving end, effectively halving fiber requirements compared to traditional dual-fiber setups . This technology is widely used in FTTH networks, metro Ethernet, data centers, 5G base stations, and security monitoring .
OSFP Modules
The Octal Small Form Factor Pluggable (OSFP) standard defines high-speed optical modules with 8 or 16 lanes, supporting data rates up to 400 Gbps. OSFP modules include specifications for electrical connectors, signals, power, mechanical, and thermal requirements, and are compatible with a wide range of networking equipment . While OSFP modules are typically used for high-capacity backbone and data center interconnects, single-fiber BiDi OSFP modules combine the OSFP form factor with BiDi technology to maximize fiber efficiency.
Available Products in Bangladesh
Several single-fiber BiDi modules are available in Bangladesh:
- Ac Net ESFPB-8823-20DL: A 1.25 Gbps SFP transceiver with 20 km reach, using 1310/1550nm wavelengths for bidirectional transmission. It supports Digital Diagnostic Monitoring (DDM/DOM) and is compatible with major switches and routers .
- Corelink 10G 40KM SFP+ BiDi Module: Supports 10 Gbps over 40 km, requiring paired modules (1310/1270nm & 1270/1310nm) for proper operation. Designed for telecom-grade and ISP-grade environments, suitable for FTTH, metro Ethernet, and backbone links . These modules are hot-swappable, MSA-compliant, and designed for long-distance, high-performance networks, making them suitable for both enterprise and ISP deployments in Bangladesh.
Advantages
- Reduced fiber usage: Single-fiber BiDi cuts fiber requirements by 50% .
- Cost-effective deployment: Fewer fibers and simpler cabling reduce installation costs.
- High compatibility: Works with standard SFP/SFP+ and OSFP ports.
- Long-distance support: Modules available for 10 km to 40 km or more, depending on speed and wavelength pairing.
- Monitoring and reliability: Many modules include DDM/DOM for real-time diagnostics .
Applications
- Data centers and enterprise networks: Efficient high-speed interconnects.
- FTTH and metro networks: Reduces fiber infrastructure costs.
- 5G and telecom networks: Supports high-capacity, long-distance links.
- Security and monitoring systems: Reliable, long-reach optical links. In summary, single-fiber bidirectional OSFP modules in Bangladesh provide a practical, cost-efficient solution for high-speed optical networks, combining the OSFP form factor with BiDi technology to optimize fiber usage, support long-distance transmission, and maintain compatibility with existing network infrastructure.
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