Wavelength conversion of OFDM 16-/32-/64-/128-QAM signals using four-wave mixing in a silicon waveguide

We report all-optical wavelength conversion of OFDM m-QAM signals by exploiting degenerate four-wave mixing (FWM) in a silicon waveguide. Low penalty silicon-waveguide-based wavelength conversions of OFDM m-QAM (m=16, 32, 64, 128) signals are successfully demonstrated in the experiment.