Copyright © 2002, IEEELópez Heredero, R.Santos, J. L.Fernández de Caleya, R. F.Araújo, F. M.Ferreira, L. A.Guerrero, H.2022-02-172022-02-172002-05-10Conferencehttps://ieeexplore.ieee.org/document/1000801http://hdl.handle.net/20.500.12666/647Conference Location: Portland, OR, USA. INSPEC Accession Number: 7419103. Optical Fiber Sensors Conference.An optical fiber current sensor based on a permanent magnet fixed on the center of a micromachined Si membrane has been presented. The transducing operation principle is magneto-mechanical and has a linear response. A great improvement of the sensitivity of the microcavities was achieved by the use of a planar coil. Interrogation of the transducer has been carried out using a Fabry-Perot interferometer with an all-fiber detection system to avoid the influence of electromagnetic noise. The effectiveness of a fiber scheme based on the utilization of two fibre Bragg gratings to generate two quadrature phase-shifted interferometric signals has also been reported.enginfo:eu-repo/semantics/conferenceObject10.1109/OFS.2002.1000801info:eu-repo/semantics/restrictedAccess