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Proceedings Paper

Fiber optic volatile organic compounds sensor based on polymer coated FBG refractometer
Author(s): Peng Wang; Serge Caron; Claude Paré; Franics Picard; Sébastien Dubus; Nolwenn Le Bouch; Patrick Paradis; Sihai Chen
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Paper Abstract

Fiber Bragg Grating (FBG) refractometer for liquid refractive index monitoring and its applications have been widely studied in the past few decades. This paper proposes a novel fiber optic volatile organic compounds (VOCs) sensor, achieved by means of polymer film coated high performance FBG refractometer, i.e. cladding removed FBG or even core thinned FBG. Polymer film coated sensor has partial selectivity, which makes this kind of sensors suitable for optical nose systems. While being exposed to VOCs, the sensing layer swells and its refractive index changes at the same time. Transduction part of this sensor, the thinned FBG, works as both strain transducer and refractometer. The mathematical model of the FBG VOCs sensor is introduced and experimentally evaluated with OV-1 coated FBG refractometer, which shows partial selectivity to different vapors and about 100 ppm detection limit to toluene.

Paper Details

Date Published: 17 February 2012
PDF: 7 pages
Proc. SPIE 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging, 83320E (17 February 2012); doi: 10.1117/12.918275
Show Author Affiliations
Peng Wang, Huazhong Univ. of Science and Technology (China)
National Optics Institute (Canada)
Serge Caron, National Optics Institute (Canada)
Claude Paré, National Optics Institute (Canada)
Franics Picard, National Optics Institute (Canada)
Sébastien Dubus, National Optics Institute (Canada)
Nolwenn Le Bouch, National Optics Institute (Canada)
Patrick Paradis, National Optics Institute (Canada)
Sihai Chen, Huazhong Univ. of Science and Technology (China)
National Optics Institute (Canada)


Published in SPIE Proceedings Vol. 8332:
Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging
Pierre Galarneau; Xu Liu; Pengcheng Li, Editor(s)

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