Microstructured chalcogenide fibers for biological and chemical detection: case study: a CO2 sensor

L. Brilland; F. Charpentier; J. Troles; B. Bureau; C. Boussard-Plédel; J. L. Adam; D. Méchin; D. Trégoat

doi:10.1117/12.835396

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5 October 2009 Microstructured chalcogenide fibers for biological and chemical detection: case study: a CO₂ sensor

L. Brilland, F. Charpentier, J. Troles, B. Bureau, C. Boussard-Plédel, J. L. Adam, D. Méchin, D. Trégoat

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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 750358 (2009) https://doi.org/10.1117/12.835396
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

Chalcogenide glasses are well known materials due to their transparency in the infrared optical range and their ability to be drawn into optical fibers. Such fibers can transmit light from 1 to 20 μm depending on the composition of the glass constituting the fiber. Besides, microstructured silica fibers have been successfully used as fiber sensors as the holes can be filled with liquid or gas to achieve overlap of the mode field (doing the sensing) and the sample. Since gas generally shows a characteristic optical absorption spectrum in the mid-infrared, it can be detected selectively and quantitatively in a given environment by analysing mid-IR spectra, in a region where silica fibers can't be used due to their low transmission. Microstructured optical fibers made of chalcogenide glass will permit to implement this measurement and detect species such as CO2 through its absorption band near 4.2 μm.

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L. Brilland, F. Charpentier, J. Troles, B. Bureau, C. Boussard-Plédel, J. L. Adam, D. Méchin, and D. Trégoat "Microstructured chalcogenide fibers for biological and chemical detection: case study: a CO₂ sensor", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750358 (5 October 2009); https://doi.org/10.1117/12.835396

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