Ultralow power continuous-wave frequency conversion in hydrogenated amorphous silicon waveguides

We demonstrate wavelength conversion through nonlinear parametric processes in hydrogenated amorphous silicon (a-Si:H) with maximum conversion efficiency of -13 dB at telecommunication data rates (10 GHz) using only 15 mW of pump peak power. Conversion bandwidths as large as 150 nm (20 THz) are meas...

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Bibliographic Details
Published inOptics letters Vol. 37; no. 8; p. 1331
Main Authors Wang, Ke-Yao, Foster, Amy C
Format Journal Article
LanguageEnglish
Published United States 15.04.2012
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Summary:We demonstrate wavelength conversion through nonlinear parametric processes in hydrogenated amorphous silicon (a-Si:H) with maximum conversion efficiency of -13 dB at telecommunication data rates (10 GHz) using only 15 mW of pump peak power. Conversion bandwidths as large as 150 nm (20 THz) are measured in continuous-wave regime at telecommunication wavelengths. The nonlinear refractive index of the material is determined by four-wave mixing (FWM) to be n(2)=7.43×10(-13) cm(2)/W, approximately an order of magnitude larger than that of single crystal silicon.
ISSN:1539-4794
DOI:10.1364/OL.37.001331