FPGA-based real-time receiver for Nyquist-FDM at 112 Gbit/s sampled with 32 GSa/s

We demonstrate an efficient multi-format real-time Nyquist-FDM receiver implemented on a single FPGA. The single-polarization receiver with only 8/7 oversampling receives 56 Gbit/s 4QAM and 112 Gbit/s 16QAM transmitted over 300 km SSMF.