GeS2-Ga2S3-CsI chalcohalide glasses for all-optical switching devices

Diego Marchese; Marco De Sario; Animesh Jha; Ajoy Kumar Kar; Euan C. Smith

doi:10.1117/12.323388

28 September 1998 GeS₂-Ga₂S₃-CsI chalcohalide glasses for all-optical switching devices

Diego Marchese, Marco De Sario, Animesh Jha, Ajoy Kumar Kar, Euan C. Smith

Proceedings Volume 3416, Infrared Glass Optical Fibers and Their Applications; (1998) https://doi.org/10.1117/12.323388
Event: Lasers and Materials in Industry and Opto-Contact Workshop, 1998, Quebec, Canada

Abstract

High-speed all-optical signal routing is achievable by designing new materials with fast response optical nonlinearities; in this context, third-order high nonlinear refractive index glasses are the best candidates. In this work, the characterization of the third-order nonlinear optical properties of a new chalcohalide glass and its application for the fabrication of high-efficiency nonlinear optical devices are presented. We report the measured values of high third-order optical nonlinear refractive index n₂ and the two-photon absorption (beta) of a new ternary GeS₂-Ga₂S₃-CsI chalcohalide glass. Improvements in the glass third-order optical nonlinearity were achieved by the inclusion of Ag-ions in the ternary glass composition. A theoretical analysis of signal propagation along a nonlinear directional coupler (NLDC) in twin-core fiber geometry and the interaction between the signal electromagnetic field and the waveguiding medium were considered in order to estimate the performance of the considered device for all-optical switching applications. All-optical switching, by controlling the optical pulse intensity in NLDC, has been numerically modeled in the second telecommunication window, and preliminary result support the suitability of this glass for these applications.

Citation Download Citation

Diego Marchese, Marco De Sario, Animesh Jha, Ajoy Kumar Kar, and Euan C. Smith "GeS₂-Ga₂S₃-CsI chalcohalide glasses for all-optical switching devices", Proc. SPIE 3416, Infrared Glass Optical Fibers and Their Applications, (28 September 1998); https://doi.org/10.1117/12.323388

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