Extralink SFP+ 10G SFP+ WDM Module 10Gbps 1270/1330nm single mode 40km LC DOM pair

The Extralink SFP+ 10G WDM Module pair (1270/1330 nm) is a set of two single-mode SFP+ transceivers designed for bidirectional 10 Gbps optical links over single-mode fiber. Each module fits into a standard SFP+ port and enables two-way data transmission using different wavelengths (1270 nm and 1330 nm) on a single fiber. The modules support link lengths up to 40 km and include Digital Optical Monitoring (DOM) to report parameters such as optical power and temperature in real time. The transceiver pair conforms to SFP+ form factor and is compatible with equipment that accepts SFP+ modules for 10GBASE links.

Advantages

The Extralink SFP+ WDM modules deliver 10 Gbps performance in a compact SFP+ form factor while enabling fiber-pair reduction through bidirectional (BIDI) operation on a single strand of single-mode fiber. Integrated Digital Optical Monitoring provides real-time diagnostic data for transmitter/receiver power and temperature without interrupting service. The modules are built with a DFB transmitter and InGaAs receiver components to ensure stable optical performance and compliance with international optical safety standards.

Suitable for

• High-speed links between switches, routers and servers over single-mode fiber
• Metro and access aggregation where fiber count is limited
• Long-reach connections up to 40 km in campus or provider networks
• Upgrading existing SFP+ ports to 10Gbps WDM bidirectional operation

Key specifications

• Form factor: SFP+ (hot-pluggable 20-pin connector)
• Data rate: up to 10 Gbps (supports 9.95–10.3 Gb/s)
• Wavelengths: 1270 nm and 1330 nm (pair, bidirectional)
• Fiber type: single-mode fiber (SMF)
• Maximum reach: up to 40 km
• Connector: LC duplex (single-fiber bidirectional pair)
• Monitoring: Digital Optical Monitoring (DOM/DDM) supported
• Transmitter type: DFB laser; Receiver: integrated InGaAs preamplifier
• Standards: compatible with SFP+ 10GBASE interfaces

How to use

Insert each SFP+ module into the SFP+ slot of the networking device until it clicks into place; no power down of the host is required for hot-pluggable installation. Connect single-mode fiber using LC connectors, ensuring the correct wavelength module is connected at each end of the link so that the 1270 nm transceiver faces the 1330 nm transceiver on the opposite side. Verify link status on the host device and monitor DOM parameters through the device management interface to confirm optical power levels and module temperature within expected ranges.

Recommendations

Use factory-cleaned LC connectors and appropriate single-mode patch cords to minimize insertion loss. Confirm compatibility with the network equipment vendor if the device firmware enforces vendor-specific transceiver restrictions. For reliable long-distance performance, verify fiber attenuation and install optical attenuators only if the received optical power exceeds device specifications reported by DOM.