Optic fiber network communication system with duobinary transceiver

An optic fiber network communication system is described that allows a duobinary transceiver to be coupled with an optical dispersion compensator receiver. In one example an optical dispersion compensator is coupled to an input optical fiber to receive an optical signal and compensate the optical dispersion of the received optical signal, the optical dispersion compensator being configured to compensate the dispersion of a partial response modulation and coding transmitter. A photodetector converts the dispersion compensated optical signal to an electrical signal, and a demultiplexer demultiplexes the electrical signal.