System and method for measuring stress in an optical fiber

Details System and method for measuring stress in an optical fiber System and method for measuring stress in an optical fiber

G - Physics

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G01L 1/24 (2006.01) G01B 11/16 (2006.01) G01M 11/00 (2006.01) G01M 11/08 (2006.01)

Patent

CA 2385516

A system and method for measuring stress exerted on an optical fiber (12) including providing an optical fiber (12) that includes a fiber optic sensor (14), and exposing the optical fiber (12) and the fiber optic sensor (14) to various stresses associated with the process by moving the optical fiber (12) and the fiber optic sensor (14) through the process to be measured. The system and method further includes transmitting a source light (36) through the optical fiber as the optical fiber and the fiber optic sensor are exposed to various stresses, receiving a return light signal (44, 46) from the fiber optic sensor as the optical fiber and the fiber optic sensor are exposed to various stresses, and comparing the source light signal (44) to the return light signal (46) for determining the stress exerted on the optical fiber.

L'invention concerne un procédé permettant de mesurer les contraintes exercées sur une fibre optique (12), consistant à sélectionner une fibre optique (12) comprenant un capteur (14) à fibre optique, et à exposer la fibre optique (12) et le capteur (14) à fibre optique à diverses contraintes associées à un processus, par déplacement de la fibre optique (12) et du capteur (14) à fibre optique tout au long de ce processus. Le système et le procédé consistent également à transmettre une lumière source (36) sur la fibre optique alors que la fibre optique et le capteur à fibre optique sont exposés à diverses contraintes, recevant un signal lumineux (46) de retour du capteur à fibre optique alors que la fibre optique et le capteur à fibre optique sont exposés à diverses contraintes, et à comparer le signal lumineux (44) source au signal lumineux (46) de retour afin de définir les contraintes exercées sur la fibre optique.

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