Net-gain from a parametric amplifier on a chalcogenide optical chip
We report first observation of net-gain from an optical parametric amplifier in a planar waveguide. This was achieved in a lowloss As2S3 planar waveguide, with a strong nonlinearity (γ ~ 10 /W/m) and tailored anomalous dispersion yielding efficient Raman-assisted four-wave mixing at telecom wavelengths. The experiments were in good agreement with theory, and indicate a peak net-gain greater than +16 dB for the signal and idler (+30 dB neglecting coupling losses) and a broad...[Show more]
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