Temperature sensor with optical fibre

G - Physics – 01 – K

Patent

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G01K 11/32 (2006.01)

Patent

CA 2342811

The invention concerns a temperature sensor comprising an optical source with optical fibre (10, 30) for delivering an optical signal, a first optical fibre transmission line (12, 32) connected to the optical source, an optical fibre sensitive part (14, 34) connected to the first optical fibre transmission line, a second optical fibre transmission line (16, 36) connected to said optical fibre sensitive part, and an optical detection and processing circuit (18, 38) connected to the second optical fibre transmission line for receiving and analysing the optical signal transmitted by the optical source and passing through the optical fibre. The invention is characterised in that said optical fibre sensitive part is mounted on a plane and curved support over a specific length (N1) and with a specific amplitude of curvature (A1).

L'invention concerne un capteur de température comprenant une source optique à fibre optique (10, 30) pour délivrer un signal optique, une première ligne de transmission à fibre optique (12, 32) reliée à la source optique, une partie sensible de fibre optique (14, 34) reliée à la première ligne de transmission à fibre optique, une seconde ligne de transmission à fibre optique (16, 36) reliée à la partie sensible de fibre optique, et un circuit de détection optique et de traitement (18, 38) relié à la seconde ligne de transmission à fibre optique pour recevoir et analyser le signal optique transmis par la source optique et traversant la fibre optique, ledit capteur étant caractérisé en ce que ladite partie sensible de fibre optique est montée sur un support plan et courbée sur une longueur déterminée (N1) et avec une amplitude de courbure déterminée (A1).

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