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1 × N star coupler as a distributed fiber-optic strain sensor in a white-light interferometer

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Abstract

A novel technique of using a 1 × N star fiber optic coupler as a distributed strain sensor in a white-light interferometer to measure the distribution of strain is presented. The measuring principle and 1 × 4 star coupler with four fiber optic strain sensors are demonstrated. The experiment is performed with four sensors attached to a combination plastic specimen.

© 1998 Optical Society of America

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