Simultaneous Wavelength Conversion of ASK and DPSK Signals Based on Four-Wave-Mixing in Dispersion Engineered Silicon Waveguides

The authors experimentally demonstrate Four-Wave-Mixing (FWM)-based continuous wavelength conversion of optical Differential-Phase-Shift-Keyed (DPSK) signals with large wavelength conversion ranges as well as simultaneous wavelength conversion of dual-wavelength channels with mixed modulation formats in 1.1-cm-long dispersion-engineered silicon waveguides. They first validate up to 100-nm wavelength conversion range for 10-Gb/s DPSK signals, showcasing the capability to perform phase-preserving operations at high bit rates in chip-scale devices over wide conversion ranges.