Real-time polarization division multiplexed coherent optical OFDM receiver at 9.83-GS/s for 28.6-Gb/s single-band intradyne detection

Real-time polarization division multiplexed coherent optical OFDM receiver is demonstrated to receive 28.6-Gb/s data per optical wavelength in single intradyne detection. QPSK modulated sub-carriers are detected using 9.83-GS/s ADCs and DSP implemented on three FPGAs.