CFP2 400G DCO Transceiver 400G Coherent CFP2-DCO C-band Tunable1 Description The CFP2 400G DCO Transceiver is a portfolio of digital coherent optical transceiver (or transponder) modules with up to 2000 km long haul operation for 100G and 200G and extended 400GE reach for data center interconnect and metro networks. It supports multiple applications from a single product, including the 200G long haul and 400G metro range. Low power consumption and better thermal performance enable high density line card designs.