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 language | English |
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Pages (from-to) | 8108-8114 |
Number of pages | 7 |
Journal | Optics Express |
Volume | 25 |
Issue number | 7 |
DOIs | |
Publication status | Published - 3 Apr 2017 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics