Optical Arbitrary Waveform Generation and Measurement (OAWG/OAWM) Enabling 320 GBd 32QAM Transmission

We demonstrate optical arbitrary waveform generation at a record-high bandwidth of 325 GHz by phase-stabilized superimposing of four tributary signals. In a proof-of-concept experiment, we use the scheme to generate 320 GBd 32QAM data signals, which are transmitted over 87 km and received by an optical arbitrary waveform measurement system.