Experimental Demonstration of C-Band 112-Gb/s PAM4 over 20-km SSMF with Joint Pre- and Post-Equalization

We demonstrate C-band 112-Gb/s PAM4 over 20-km transmission with pre- and post-equalization. Pre-filter coarsely pre-compensates system bandwidth at transmitter while FFE-DFE with erasure technology jointly post-compensates residual bandwidth limitation and dispersion-induced power fading at receiver.