Fiber Optic Transceiver CBO GSLC20-BiDi-B-DDM 1.25Gbps 1310nm/1550nm

The Fiber Optic Transceiver CBO GSLC20-BiDi-B-DDM 1.25Gbps 1310nm/1550nm is a single-fiber bidirectional SFP module designed for 1.25 Gbps links. It transmits and receives over one optical fiber using two different wavelengths (1310 nm and 1550 nm) to provide duplex communication without the need for paired fibers. The module supports Digital Diagnostics Monitoring (DDM) to report real-time parameters such as optical power, temperature, and supply voltage, making it suitable for monitoring and fault detection in access networks, metro rings and enterprise links.

Advantages

The transceiver reduces cabling complexity by enabling bidirectional transmission on a single fiber, saving fiber infrastructure and installation effort. Its compact SFP form factor allows easy hot-plug replacement in compatible ports and supports standard 1.25 Gbps Ethernet/SONET/SDH interfaces. Integrated DDM provides continuous diagnostics for proactive maintenance and quick fault isolation. The module is engineered for stable operation in typical telecom and datacom environments and is compatible with equipment that supports SFP single-fiber BiDi modules.

Suitable for

• Upgrading or extending access network links where fiber count is limited
• Establishing metro and campus duplex connections over a single fiber
• Replacing failed SFP modules in compatible switches and optical transceivers
• Point-to-point links between enterprise buildings or wiring closets

Key specifications

• Data rate: 1.25 Gbps
• Wavelengths: 1310 nm (Tx or Rx) and 1550 nm (Tx or Rx) for bidirectional operation on one fiber
• Form factor: SFP (small form-factor pluggable)
• Optical interface: single-mode fiber (single-fiber BiDi)
• Digital Diagnostics Monitoring: supported (real-time monitoring of power, temperature and voltage)
• Connector type: LC (single-fiber LC or suitable breakout)

How to use

Install the SFP transceiver into a compatible SFP port with the device powered on or off following the host equipment instructions for hot-plugging. Connect a single-mode single-fiber jumper with appropriate LC connectors; ensure correct orientation for the bidirectional link by pairing this 1310/1550 nm module with the complementary wavelength module at the remote end. Verify link status using the host device interface and consult DDM readouts to confirm optical power, temperature and voltage are within operational ranges.

Recommendations

For reliable operation, use patch cables and connectors rated for single-mode fiber, avoid tight bends or mechanical stress on the fiber, and pair BiDi modules with matching complementary wavelength modules. Monitor DDM values after installation to detect any attenuation or connector issues early. Follow equipment vendor compatibility lists to ensure the SFP is supported for automatic recognition and proper link negotiation.