Guanglian’s 100G QSFP28 ER4 Optical Transceiver Module is designed for use in 100GBASE Ethernet throughput up to 40km over single mode fiber (SMF) with duplex LC connectors. Taking EML TOSA+SOA+PIN ROSA+PCBA separate design, it has great reliability, airtightness and heat dissipation performance. This transceiver is compliant with IEEE 802.3ba 100GBASE-ER4 standard. Digital diagnostics functions are also available via the I2C interface, as specified by the QSFP28 MSA, to allow access to real-time operating parameters. It is suitable to be used in various applications, such as 100G Ethernet, telecom, access network, data center interconnection, and 5G wireless network.