Compatibility between nonlinear compensation and crosstalk compensation using MIMO processing in super-high-density multi-carrier transmission system

We experimentally demonstrate that nonlinear compensation and MIMO-based neighbouring-crosstalk compensation achieve a Q-factor improvement of 2–3 dB without mutual performance degradation in a broad range of fibre-launched power for two-sub-carrier 32-Gbaud signals with the sub-carrier spacing of 25 GHz.