Magnetic field sensor of enhanced sensitivity and temperature self-calibration based on silica fiber Fabry-Perot resonator with silicone cavity

Bin Zhou, Changtao Lu, Barerem Melgueba Mao, Hwa Yaw Tam, Sailing He

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)

Abstract

In this paper, a magnetic field sensor with enhanced sensitivity based on a fiber Fabry-Perot (F-P) cavity formed by a pair of identical fiber Bragg gratings (FBGs) is demonstrated. The F-P cavity which was filled with silicone rubber was bonded to a magnetic alloy at two positions such that when longitudinal strain is applied, the cavity is lengthened while the FBGs was virtually strain-free, effectively magnified the magnetic-field induced strain of the magnetic alloy. The FBGs could also be used for temperature-compensation because the FBG spectrum change is negligible compared to the F-P spectrum.
Original languageEnglish
Pages (from-to)8108-8114
Number of pages7
JournalOptics Express
Volume25
Issue number7
DOIs
Publication statusPublished - 3 Apr 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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