GrenTech 40G QSFP+ PSM4 2KM/10KM compliant with IEEE 802.3ba and SFF-8436. It has 4 independent transmit and receive channels, each channel can work at 10.3125Gbps with a total rate of 41.25G. It can transmit up to 10km over single-mode fiber, and it widely uses in 40G PSM4 Ethernet, InfiniBand 4x QDR and OTN OTU3 links.
