The 100Gbps CWDM4 QSFP28 transceiver is designed to meet the requirements of 100G data links over SMFup to 2km, lt is compliant with QSFP28 MSA, 100G CLR4, CWDM4 MSA and lEEE 802.3bm, it is cost-effective,low power consumption with a single 3.3V power supply. The module has an aggregate bit rate up to 103.1Gbps bymultiplexing of 4 independent CWDM optical lanes, each lane capable of transmiting 25.78125Gb/s over 2km SMFIt is fabricated with all-metal and compact size housing for superior EMl performance.