Coarse Wavelength Division Multiplexing (CWDM4) technology, it multiplexes four 25Gbps wavelengths to achieve an aggregate 100Gbps rate, supporting reaches up to 2 kilometers.
The 100G QSFP28 ER1 CWDM is designed for 30km optical communication applications. It is intended for the service with single mode fiber in 100Gb/s high speed data communications.