Up to 190-Gb/s OOK signal generation using a coding and cutting technique with a 92 GSa/s DAC

On-off keying (OOK) signals up to 190 Gb/s are generated in a bandwidth limited system using a 92 GSa/s DAC and a simple coding and cutting technique. The coding method is cascaded duo-binary coding, and the performance at different baud-rates is investigated.