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Fiber optical current sensor based on tapered Terfenol-D composite

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Abstract

This paper presents an optical current sensor which is based on introducing nonuniform period onto a fiber Bragg Grating (FBG) by embedded it in a magnetostrictive composite with tapering shape. The interaction of the composite with an external magnetic field yields a strain distribution that widens the FBG spectrum through frequency chirping. The sensor has been investigated theoretically by modeling and experimentally by prototyping.

© 2017 Optical Society of America

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