>55-Gbps and 30-dB Loss Budget LR-OFDM PON Downstream Enabled by ANN-based Predistortion

We proposed the ANN-based predistortion to mitigate nonlinear distortion in a 25- to 70-km IM/DD OFDM PON. Using 18-dBm launch power, the >55-Gbps down-stream with 30-dB loss budget was demonstrated without nonlinear compensation at ONUs.