Polarization-switching FBG interrogator for distributed point measurement of magnetic field strength and temperature

Orr, Philip and Niewczas, Pawel (2010) Polarization-switching FBG interrogator for distributed point measurement of magnetic field strength and temperature. IEEE Sensors Journal, 11 (5). pp. 1220-1226. ISSN 1530-437X

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Abstract

We report on the design and implementation of a novel optical fiber system for dual point measurement of magnetic field strength and temperature. The system incorporates a polarization switching technique that enables ratiometric processing of the orthogonal circularly polarized reflections from low-birefringence fiber Bragg gratings. High-resolution magneto-optical measurement of either static or dynamic magnetic fields may be achieved while retaining the capability for serial multiplexing and temperature measurement. The system provides a practical solution to intrinsic fiber point measurement of magnetic field, leading to potential applications in adverse environmental conditions, where electronic or extrinsic optical technologies are unsuitable.

ORCID iDs

Orr, Philip and Niewczas, Pawel ORCID logoORCID: https://orcid.org/0000-0003-3291-1725;