T1-QSFP-40G-DWDM-C-XX's pluggable optical transceiver modules are designed for multiple 40GE links up to 80km distance over standard G. 652 single-mode optical fibers (SMF). several kilometers, no EDFA and dispersion compensation modules (DCM). FS 40G QSFP+ optical transceiver module solutions offer a full range of QSFP+ modules from 150m to 80km reach, and used for high-density switching, routing and data center applications. It supports long-distance communication from 10km up to 60km, making it ideal for data centers, ISP backbone, and metro networks. Features 4 CWDM lanes MUX/DEMUX design Up to 11.