Tecowin Cisco 40GBASE-LR4 QSFP+ Transceiver, 1310 nm, SMF, 10 km, OTU3 Support

Data centre engineers deploying 40 Gigabit Ethernet links over single-mode fibre can use the Tecowin QSFP-40G-LR4-C transceiver to connect switches, routers, and optical transport equipment across distances up to 10 km. This QSFP+ module supports both 40GBASE-LR4 Ethernet and OTU3 (41.25 Gbps) OTN rates, making it suitable for mixed packet and optical transport networks.

Key specifications

• Form factor: QSFP+
• Data rate: 40 Gbps Ethernet, 41.25 Gbps OTU3
• Wavelength: 1310 nm band (CWDM lanes: 1271 nm, 1291 nm, 1311 nm, 1331 nm)
• Fibre type: Single-mode (SMF)
• Connector: Duplex LC
• Max distance: 10 km
• Digital diagnostics monitoring (DDM): Supported
• Power consumption: < 3.5 W
• Operating temperature: 0°C to 70°C
• Hot-pluggable: Yes

Why choose it

This transceiver is engineered for Cisco-compatible environments, delivering reliable 40G connectivity with low power draw and integrated DDM for real-time monitoring of optical parameters. Its support for OTU3 allows seamless integration into OTN-based metro and access networks.

Ideal use cases

• 40G Ethernet links between data centre switches
• OTN OTU3 client interfaces in telecom networks
• High-capacity interconnects within a campus or metro area

Good to know

The module uses four CWDM wavelengths multiplexed over a single pair of single-mode fibres, enabling efficient use of existing fibre infrastructure. It operates from a standard 3.3 V supply and is hot-pluggable for minimal downtime during installation or replacement.