Demonstration of 125-GBaud all-optical Nyquist QPSK signal generation and full-band coherent detection based on one receiver

We report the experimental demonstration of the 125-GBaud all-optical Nyquist QPSK signal generation based on sinc-shaped Nyquist pulses and full-band signal coherent detection with one receiver. A record baud rate for full-band coherent detection based on one receiver is demonstrated.