An infrared fibre evanescent wave spectroscopic (FEWS) sensor using purified GeTeSe chalcogenide fibres

Xin Jiang; Animesh Jha

doi:10.1117/12.835409

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5 October 2009 An infrared fibre evanescent wave spectroscopic (FEWS) sensor using purified GeTeSe chalcogenide fibres

Xin Jiang, Animesh Jha

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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 750319 (2009) https://doi.org/10.1117/12.835409
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

In this study, we report the fabrication and engineering of an infrared fibre evanescent wave spectroscopic (FEWS) sensor using GeTeSe chalcogenide fibres, which manifests high temperature durability (glass transformation temperature at 260°C) and extended infrared transmission from 1.5 to 18 μm. We also report the methodologies adopted for the fabrication of fibres, including the purification of starting chemicals for high spectral purity, glass melting, quenching and annealing, fabrication of fibre performs. The designed FEWS sensor consists of a 40 cm unstructured GeTeSe fibre coupled with a Fourier transform infrared (FTIR) spectrometer and a Mercury-Cadmium-Tellurium (MCT) infrared detector, and the active sensing length of the fibre is 3 cm. In this paper, we demonstrate the sensing results with various analytes and investigate the sensitivity of this sensor.

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Xin Jiang and Animesh Jha "An infrared fibre evanescent wave spectroscopic (FEWS) sensor using purified GeTeSe chalcogenide fibres", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750319 (5 October 2009); https://doi.org/10.1117/12.835409

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