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Low-noise, tunable wavelength-conversion through non-degenerate four-wavemixing Bragg scattering in SiNx waveguides is experimentally demonstrated.Finite element method simulations of waveguide dispersion are used with thesplit-step Fourier method to predict device performance, and indicate a strongdependence of the conversion efficiency on phase matching, which is controlledby the waveguide geometry. Two 1550 nm wavelength band pulsed pumps are used toachieve tunable conversion of a 980 nm signal over a range of 5 nm with a peakconversion efficiency of \approx 5 %. The demonstrated Bragg scattering processis suitable for frequency conversion of quantum states of light.

Low-noise on-chip frequency conversion by four-wave-mixing Bragg scattering in SiNx waveguides