Temperature-Disturbance Free Magnetic Field Sensor Based on Double Fiber Optic Polarimetry

Satoshi TANAKA; Masahiro MURAKAWA; Yoshihiro OHTSUKA

doi:10.1007/BF02936002

Satoshi TANAKA, Masahiro MURAKAWA, Yoshihiro OHTSUKA

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Keywords: magnetic-field sensor, double fiber-optic heterodyne polarimetry, immunity from temperature disturbance, polarization maintaining-single mode fiber, magnetostrictive sensor

JOURNAL FREE ACCESS

1997 Volume 4 Issue 1A Pages 96-98

DOI https://doi.org/10.1007/BF02936002

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Abstract

A double fiber-optic Mach-Zehnder interferometer for sensing magnetic fields is devised using two polarization maintaining single-mode fibers. This sensor achieves not only highly sensitive performance but also excellent immunity from temperature disturbance. The sensitivity attains 243 deg/mT (mT=10^-3N/A) for the sensing part of the 5 cm long fiber.

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