Triply resonant four-wave mixing in silicon-coupled resonator microring waveguides.

Silicon photonic four-wave mixing (FWM) devices intended for telecommunications applications must satisfy three requirements: achieve conversion efficiencies close to the detection threshold of typical receivers, while keeping pump power requirements modest and providing enough bandwidth for typical signal formats. Here, we report a continuous-wave FWM efficiency of -21.3  dB at 100 mW pump power and demonstrate wavelength conversion at 10 Gbps in a coupled-resonator optical-waveguide device.