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Ultra-low-power four-wave mixing wavelength conversion in high-Q chalcogenide microring resonators

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Abstract

A compact ${{\rm Ge}_{11.5}}{{\rm As}_{24}}{{\rm Se}_{64.5}}$ chalcogenide microring resonator is fabricated with an intrinsic quality factor of $3.0 \times {10^5}$ in the telecom band. By taking advantage of the strong nonlinearity and cavity enhancement, highly efficient wavelength conversion via four-wave mixing is demonstrated using a microring resonator. Conversion efficiency of ${-}33.7\; {\rm dB}$ is obtained by using an ultra-low pump power of 63.8 µW. This work shows that ${{\rm Ge}_{11.5}}{{\rm As}_{24}}{{\rm Se}_{64.5}}$ chalcogenide microring devices are promising for quantum photonics.

© 2021 Optical Society of America

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