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Low Raman-noise correlated photon-pair generation in a dispersion-engineered chalcogenide As2S3 planar waveguide

Collins, Matthew J; Clark, Alex S; He, Jiakun; Williams, Robert J; Judge, Alexander C; Madden, Steve J; Withford, Michael J; Steel, M. J.; Luther-Davies, Barry; Xiong, Chunle; Eggleton, Benjamin J; Choi, Duk-Yong


We demonstrate low Raman-noise correlated photon-pair generation in a dispersion-engineered 10 mm As2S3 chalcogenide waveguide at room temperature. We show a coincidence-to-accidental ratio (CAR) of 16.8, a 250 times increase compared with previously published results in a chalcogenide waveguide, with a corresponding brightness of 3×105  pairs·s−1·nm−1 generated at the chip. Dispersion engineering of our waveguide enables photon passbands to be placed in the low spontaneous Raman scattering...[Show more]

CollectionsANU Research Publications
Date published: 2012-08-08
Type: Journal article
Source: Optics Letters 37.16 (2012): 3393-3395
DOI: 10.1364/OL.37.003393


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