100G QSFP28 ER1-40 40km Single Lambda PAM4 Optical Transceiver 1310nm Duplex LC

• Supports 100GBASE-ER1-40 single lambda Ethernet applications
• Compliant with 100G Lambda MSA 100G-ER1-40 specification
• Provides up to 40km transmission distance over single-mode fiber
• Uses a single 1310nm wavelength for long-reach optical transmission
• Supports 100G PAM4 optical modulation
• Converts 4 × 25.78Gb/s NRZ electrical lanes into 1 × 100G PAM4 optical signal
• Integrated high-performance EML laser transmitter
• Uses APD receiver technology for enhanced optical sensitivity
• QSFP28 hot-pluggable form factor for high-density networking
• Supports CAUI-4 electrical interface
• Equipped with Duplex LC optical connector for standard SMF cabling
• Supports digital diagnostic monitoring (DDM)

• 100GBASE-ER1-40 Ethernet links
• Long-distance data center interconnects (DCI)
• Cloud computing infrastructure
• Metro network connections
• Enterprise backbone networks
• High-capacity optical networking systems
• 100G Ethernet switch and router interconnections

We provide OEM and customized 100G QSFP28 ER1-40 optical transceiver solutions for different network equipment and deployment requirements. Customization services include firmware optimization, label and housing customization, optical parameter adjustment, power optimization, and compatibility testing with customer-specific switches, routers, and transmission platforms.

What is the difference between ER1-40 and traditional ER4 100G transceivers?

The ER1-40 uses single lambda technology, transmitting 100Gb/s through one 1310nm optical wavelength with PAM4 modulation. Traditional ER4 modules use four optical wavelengths, which increases optical complexity. ER1-40 provides a more simplified architecture for long-distance 100G transmission.

Why does the ER1-40 module use PAM4 modulation?

PAM4 modulation enables higher data rates by transmitting multiple bits per symbol, allowing a single optical wavelength to carry 100Gb/s data. This improves optical efficiency while maintaining compatibility with existing 100G network interfaces.

What type of fiber is required for this transceiver?

The module is designed for standard single-mode fiber (SMF) and uses a Duplex LC optical interface, making it compatible with widely deployed duplex fiber cabling systems.

What advantages does the APD receiver provide in this module?

An APD receiver offers higher optical sensitivity than conventional PIN receivers, helping compensate for signal loss over long-distance fiber links and improving transmission reliability for 40km applications.

Is the module compatible with standard QSFP28 ports?

Yes. The transceiver uses a standard QSFP28 form factor and CAUI-4 electrical interface, allowing deployment in compatible 100G Ethernet switches, routers, and networking equipment.