QSFPP-40G-IR4 40Gbps QSFP+ Transceiver, Single Mode, 2km Reach1 Description The QSFPP 40G IR4 is a transceiver module designed for 2km optical communication applications. The design is compliant to 40GBASE IR4 of the IEEE P802. 3ba standard. The module converts 4 inputs channels (ch) of 10Gb s electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 40Gb s optical transmission. Reversely, on the receiver side, the module optically de multiplexes a 40Gb s input into 4 CWDM