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Twist Sensor Based on Long-Period Grating Mach-Zehnder Interferometer Inscribed in Double Cladding Fiber

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Abstract

We demonstrate the fabrication of Mach-Zehnder interferometer twist sensor based on the cascaded long-period fiber gratings inscribed in double cladding fiber. The torsion sensitivity of wavelength and intensity are −0.391 nm/(rad/m) and −1.355 dB/(rad/m), respectively.

© 2021 The Author(s)

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