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.


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    Titel :

    Micromachined low-finesse Fabry-Perot interferometer for the measurement of low DC electrical currents


    Beteiligte:
    Heredeor, R.L. (Autor:in) / Santos, J.L. (Autor:in) / de Caleya, R.F. (Autor:in) / Araujo, F.M. (Autor:in) / Ferreira, L.A. (Autor:in) / Guerrero, H. (Autor:in)


    Erscheinungsdatum :

    01.01.2002


    Format / Umfang :

    346847 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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