Although fiber Bragg gratings (FBGs) have been widely used as advanced optical sensors, the cross-sensitivity between temperature and strain has complicated independent measurement procedures for these two measurands. We report here, for the first time to our knowledge, the results of a systematic investigation of the dependence of both temperature and strain sensitivities on the grating type, including the well-known Type I, Type IIA, and a new type which we have designated Type IA, using both hydrogen-free and hydrogenated B/Ge codoped fibers. We have identified distinct sensitivity characteristics for each grating type, and we have utilised them to implement a novel dual-grating, dual-parameter sensor device with performance superior to that of previously reported grating-based structures.


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    Titel :

    Fiber grating type dependence of temperature and strain coefficients and application to simultaneous temperature and strain measurement


    Beteiligte:
    Shu, X. (Autor:in) / Liu, Y. (Autor:in) / Zhao, D. (Autor:in) / Gwandu, B. (Autor:in) / Floreani, F. (Autor:in) / Zhang, L. (Autor:in) / Bennion, I. (Autor:in)


    Erscheinungsdatum :

    2002-01-01


    Format / Umfang :

    291844 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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