400G QSFP-DD ZR Coherent Transceiver 0-75℃ Product Overview The 400G QSFP-DD ZR Transceiver is a high performance, cost effective module for optical data communication applications to 400G. The 400G QSFP-DD ZR is designed to 400G 120Km DCI DWDM applications without inline chromatic dispersion compensation. Features QSFP-DD MSA compliant type 2B package Up to 120Km transmission distance Client signal 400GbE or 4x100GbE Line Modulation format 400G DP-16QAM C-band tunable,