DWDM transmission of 70 100Gb/s CP-DQPSK channels over 2000km of uncompensated SMF with real-time DSP and coherent channel selection

We have demonstrated the DWDM transmission of 70 100Gb/s channels using CP-DQPSK and coherent detection with real-time DSP and FEC. The channel selection was performed with the coherent receiver only, without using any optical demultiplexing.