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Proceedings Paper

Novel FBG-based sensor configuration for H2 leak detection in air
Author(s): C. Caucheteur; M. Debliquy; D. Lahem; C. Crunelle; P. Mégret
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Paper Abstract

The explosion risk linked to the use of hydrogen (H2) as combustible requires low-cost and efficient sensors. We present a multipoint in-fiber sensor capable of H2 leak detection as low as 1% concentration in air with a response time smaller than a few seconds. Our solution utilizes uniform fiber Bragg gratings (FBGs) surrounded by a catalytic sensitive layer made of a ceramic doped with a noble metal. In the presence of H2 in air, the sensitive layer undergoes an exothermic reaction and elevates the temperature around the FBGs. The sensor interrogation technique is based on the monitoring of the resonant wavelength shift. In this paper, the performances of the sensor are also discussed.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 700432 (16 May 2008); doi: 10.1117/12.785977
Show Author Affiliations
C. Caucheteur, Faculté Polytechnique de Mons (Belgium)
M. Debliquy, Materia Nova ASBL (Belgium)
D. Lahem, Materia Nova ASBL (Belgium)
C. Crunelle, Faculté Polytechnique de Mons (Belgium)
P. Mégret, Faculté Polytechnique de Mons (Belgium)

Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors
David Sampson; Stephen Collins; Kyunghwan Oh; Ryozo Yamauchi, Editor(s)

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