title: Magnetic field sensor of enhanced sensitivity and temperature self-calibration based on silica fiber Fabry-Perot resonator with silicone cavity.
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.
authors.forename: Bin
authors.initials: B
authors.lastname: Zhou
authors.forename: Changtao
authors.initials: C
authors.lastname: Lu
authors.forename: Barerem-Melgueba
authors.initials: BM
authors.lastname: Mao
authors.forename: Hwa-Yaw
authors.initials: HY
authors.lastname: Tam
authors.forename: Sailing
authors.initials: S
authors.lastname: He