Transmission of 112Â Gb/s dual-carrier DQPSK signal over 10Â Gb/s-based WDM optical links

► We proposed several upgrade scenarios of deploying 112 Gb/s DC-DQPSK transceiver in 10 Gb/s-based WDM transmission link. ► The results proved robust tolerance to nonlinearities and outstanding BER performance in WDM transmission. ► The 112 Gb/s DC-DQPSK transceiver can be one of the competitive alternatives among various 100G transport technologies.