Optical fiber sensor and method

G - Physics – 01 – B

Patent

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G01B 11/16 (2006.01) G01B 11/24 (2006.01)

Patent

CA 2549810

An optical fiber sensor for detecting curvature of a body/structure comprises a cladding having an outer periphery. A central core receives and transmits light. The central core has Bragg gratings and is positioned in neutral planes of the cladding. Peripheral cores receive and transmit light. The peripheral cores have Bragg gratings and are peripherally positioned in the cladding with respect to the neutral planes. A connection configuration is provided in the outer periphery of the cladding to attach the optical fiber sensor to a body/structure such that the central core and the peripheral cores are in a predetermined orientation with respect to the body/structure to measure curvature of the body/structure.

Un capteur à fibres optiques pour déceler la courbure d'un corps/d'une structure comprend un placage ayant une périphérie extérieure. Un noyau central reçoit et transmet de la lumière. Le noyau central a des réseaux de Bragg et est positionné dans des plans neutres du placage. Les noyaux périphériques reçoivent et transmettent la lumière. Les noyaux périphériques ont des réseaux de Bragg et sont positionnés par voie périphérique dans le placage concernant les plans neutres. Une configuration de connexion est fournie dans la périphérie extérieure du placage pour fixer le capteur à fibres optiques à un corps/une structure de façon à ce que le noyau central et les noyaux périphériques soient dans une orientation préétablie concernant le corps/la structure pour mesurer la courbure d'un corps/d'une structure.

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