151 X 43 GB/S TRANSMISSION OVER 4080 KM BASED ON RETURN-TO-ZERO-DIFFERENTIAL QUADRATURE PHASE-SHIFT KEYING

We demonstrate a record distance with N * 43 Gb/s RZ-DQPSK modulated channels. More than 1.5 dB margin is measured for all 151 WDM, 50 GHz-spaced channels at the end of the system, based on 70 nm-wide Raman repeaters