Transceiver BlueOptics QSFP28 100GBASE-ER4 Singlemode LC-Duplex, 4×1296–1309nm WDM, 40 km, DDM, 0–70°C

BlueOptics QSFP28 100GBASE-ER4 Singlemode LC-Duplex transceiver is a pluggable 100 Gbps module designed for long-reach optical links over singlemode fiber. The module integrates four WDM transmit wavelengths (4×1296–1309 nm) and a single LC-Duplex connector to deliver aggregated 100 Gbps throughput across distances up to 40 km. It supports Digital Diagnostic Monitoring (DDM/DOM) and is specified to operate in environments with ambient temperatures from 0 to 70°C, making it suitable for data center uplinks and carrier-grade point-to-point connections that require QSFP28 form factor 100G connectivity.

Advantages

The transceiver offers long-reach capability up to 40 km on singlemode fiber using internal 4‑wavelength WDM, reducing fiber pair requirements while maintaining full 100 Gbps throughput. Built-in DDM provides real-time monitoring of optical parameters such as transmit and receive power, temperature, and supply voltage. The QSFP28 form factor ensures high-density deployment in modern switches and routers, while the LC-Duplex interface provides compatibility with standard singlemode cabling. The module’s operating temperature range and standardized electrical and optical behaviour support reliable operation in typical rack and carrier environments.

Suitable for

• Data center aggregation and spine-to-leaf uplinks requiring 100G long-reach links
• Carrier and metro point-to-point connections up to 40 km
• Inter-building and campus backbone connections over singlemode fiber
• High-density QSFP28 deployments where fiber pair conservation is desired

Key specifications

• Form factor: QSFP28 pluggable module
• Protocol: 100GBASE-ER4
• Fiber type: Singlemode
• Connector: LC-Duplex
• Wavelengths: 4×1296–1309 nm (internal WDM)
• Maximum reach: up to 40 km on singlemode fiber
• Monitoring: Digital Diagnostic Monitoring (DDM/DOM)
• Operating temperature: 0 to 70°C

How to use

Install the QSFP28 transceiver into a compatible QSFP28 port on a switch, router, or media converter following the host equipment manufacturer’s insertion and removal guidelines. Use singlemode fiber with LC-Duplex connectors and ensure correct end-to-end polarity. Verify link status and diagnostic parameters via the host device management interface that reports DDM metrics. Observe manufacturer recommendations for electrostatic discharge (ESD) protection when handling the module and keep dust caps on the connector until final cabling to avoid contamination.

Usage recommendations

For reliable long-reach operation, use ITU‑compliant singlemode fiber and maintain clean LC connectors. Monitor DDM parameters during commissioning and periodically in operation to detect early signs of signal degradation. Ensure the host port supports QSFP28 100GBASE-ER4 optics and check compatibility lists if available from the switch or router vendor.