Non-linearity Compensation of High-Speed PAM4 Signals from Directly-Modulated Laser at High Extinction Ratio

摘要

We propose a new non-linear waveform compensation scheme for DML-based PAM signals applicable either at transmitter or receiver-side, and its effectiveness is verified with 56-Gbit/s PAM4 experiments with less than 0.1-dB sensitivity penalties up to 8.9-dB extinction ratio.