Guanglian’s 100G QSFP28 ZR4 Optical Transceiver Module is designed for use in 100GBASE Ethernet and 4x28G OTN client interfaces throughput up to 80km 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-ZR4 and OTU4 4I1-9D1F 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, 112G OTN OTU4, telecom, access network, data center interconnection, and 5G wireless network.