Catalytic Fiber Bragg Grating Sensor for Hydrogen Leak Detection in Air |
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Authors: | Caucheteur C. Debliquy M. Lahem D. Megret P. |
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Affiliation: | Fac. Polytech. de Mons, Mons; |
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Abstract: | The explosion risk linked to the use of hydrogen as fuel requires low-cost and efficient sensors. We present here a multipoint in-fiber sensor capable of hydrogen leak detection in air as low as 1% concentration with a response time smaller than a few seconds. Our solution makes use of fiber Bragg gratings (FBGs) covered by a catalytic sensitive layer made of a ceramic doped with noble metal which, in turn, induces a temperature elevation around the FBGs in the presence of hydrogen in air. |
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