QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-EN-BO 40 Mbit/s 850 nm

The BlueOptics QSFP-40G-ESR4-EN-BO is a QSFP transceiver module for multimode fiber links, supporting 40 Mbit/s data transfer at an operating wavelength of 850 nm. The module uses an MPO/MTP connector and is designed to cover distances up to 300 m. With a compact form factor and a weight of 40 g, it is suitable for high-density network installations and supports standard 40 Gigabit Ethernet interfaces. The module implements digital diagnostics (DDM/DOM) for real-time monitoring of supply voltage, laser bias current, transmit power, receive power and temperature, and is built to meet industry MSA and environmental standards.

Advantages

The transceiver offers a standardized QSFP interface and MPO/MTP connectivity for multi-fiber links, enabling simultaneous transmit and receive channels over multimode fiber. It provides integrated digital diagnostics for simplified monitoring and troubleshooting and is designed for long operational life with a high mean time between failures. Compliance with MSA specifications ensures mechanical and electrical interoperability with compatible networking hardware from various vendors.

Suitable for

• 40 Gigabit Ethernet uplinks and aggregation in data center switches
• High-speed interconnects between switches, routers and storage systems
• Short-reach multimode fiber links within campus and enterprise networks
• Environments requiring remote optical monitoring (DDM/DOM)

Key specifications

• Maximum data transfer rate: 40 Mbit/s
• Wavelength: 850 nm
• Maximum transfer distance over multimode fiber: up to 300 m
• Connector type: MPO/MTP
• Interface: 40 Gigabit Ethernet (QSFP)
• Weight: 0.04 kg
• Digital diagnostics: DDM/DOM (real-time monitoring of voltage, bias current, tx/rx power and temperature)
• MTBF: 1,000,000 hours (design target for high availability)

How to use

Install the BlueOptics QSFP-40G-ESR4-EN-BO into a compatible QSFP port on the network device following the device manufacturer’s hot-swap and handling procedures. Connect an MPO/MTP multimode fiber patch cable between transceivers or to a compatible patch panel, ensuring correct fiber polarity and clean connector endfaces. Verify link status and speed on the host equipment and, if supported, monitor DDM/DOM parameters through the management interface to confirm optical power and temperature are within acceptable ranges.

Recommendations

For best performance, use high-quality multimode fiber and MPO/MTP patch cords, keep connector endfaces clean, and ensure the host hardware supports QSFP modules and DDM/DOM monitoring. Match fiber type and link budget to the specified 300 m range and follow vendor guidelines for handling and electrostatic discharge protection.