Multi-wavelength photon pair source assisted by a silicon-on-insulator micro-ring resonator

An integrated photon pair source in the 1550-nm wavelength region is demonstrated. Spontaneous four-wave mixing is facilitated through a silicon-on-insulator micro-ring filter with 125-GHz spaced resonances. Coincidences in the pair emission are observed with a 95% visibility at spectral channels equidistant to the pump wavelength.