Modulation contrast optimization for wavelength conversion of a 20  Gbit/s data signal in hybrid InP/SOI photonic...

Photonic crystal cavity-based switching is studied both theoretically and experimentally in order to identify the best configuration to maximize "wavelength conversion" efficiency. In particular, it is shown that an enhanced contrast can be reached when the probe is blueshifted with respect to the resonance. The use of an InP/SOI hybrid photonic crystal nanocavity is reported for the first time for all-optical error-free "wavelength conversion" at 20  Gbit/s with a nonreturn to zero on-off keying signal.