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Curvature Sensor based on a Two-Core Optical Fiber

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Abstract

A curvature fiber optic sensor using a Two-Core fiber is demonstrated. The sensor spectral response shifts as the fiber is bent while the intensity peaks remain practically unaltered. The proposed sensor exhibits linear response and a sensitivity of −137.8763 nm/m−1 for curvature ranging from 0 m−1 to 0.27 m−1, which makes it suitable to measure small curvatures with high sensitivity.

© 2012 Optical Society of America

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