96Gbaud Nyquist-PDM-QPSK signal transmission over 12,120km using DP-AM-DAC and decision-feedback equalizer

We demonstrate a high baud-rate data transmission using digital-preprocessed-analog-multiplexed DAC and spectral-narrowing mitigation algorithm. Over 12,120 km transmission of 96Gbaud PDM-QPSK WDM signal with 100-GHz of spacing has been achieved.