This work describes a sensor, in which the sensing head comprises a long period fiber grating (LPG) whose attenuation peak varies as function of its bending. The level of LPG bending is induced by the displacement of a micrometer translation stage (MTS) being possible therefore to measure microdisplacements. The sensing head is integrated in a fiber optic intensity sensor, referenced in frequency, which is immune to intensity fluctuations other than the ones caused by the LPG.


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    Title :

    Micro-displacement measurement using a long period fiber grating in a self-referenced fiber optic intensity sensor


    Contributors:
    Cazacu, S. (author) / Martins, J.M. (author) / Rego, G. (author) / Santos, S.F. (author) / Santos, J.L. (author) / Baptista, J.M. (author)


    Publication date :

    2004-01-01


    Size :

    144328 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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