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

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

*Corresponding author for this work

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Abstract

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 (SpRS) window at 7.4 THz detuning from the pump. This Letter shows the potential for As2S3 chalcogenide to be used for nonlinear quantum photonic devices.

Original languageEnglish
Pages (from-to)3393-3995
Number of pages603
JournalOptics Letters
Volume37
Issue number16
Publication statusPublished - 15 Aug 2012

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Bibliographical note

This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-37-16-3393. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Cite this

Collins, M. J., Clark, A. S., He, J., Choi, D. Y., Williams, R. J., Judge, A. C., ... Eggleton, B. J. (2012). Low Raman-noise correlated photon-pair generation in a dispersion- engineered chalcogenide As2S3 planar waveguide. Optics Letters, 37(16), 3393-3995.