This product is a transceiver module designed for 10km optical communication applications. 3ba 40GBASE-LR4 and OTU3 C4S1-2D1 standards. Reversely, on the receiver side, the module optically de-multiplexes a 40Gb/s input into 4 CWDM. The QSFP28 module provides 100GBase-LR4 throughput up to 10km over a standard pair of single mode fiber (SMF) with duplex LC connectors. They are compliant with the QSFP28 MSA and IEEE 802. They. GIGALIGHT provides the smart box tools for online coding of SFP, XFP, SFP+, QSFP+, and QSFP28 optics, as well as wavelength tuning for 10G tunable XFP/SFP+ optical transceivers.