A novel intensity-modulated fiber Bragg grating (FBG) sensor system employing fiber dispersion is presented. A RF signal is generated at a photodetector by two modulated optical signals reflected from a sensing and a reference FBG. Bragg wavelength shift of the sensing FBG changes intensity of the RF signal due to a fiber dispersion-induced phase change, with temperature effect being compensated automatically by the reference FBG. Strain measurement with a maximum sensitivity of -0.34 ¿V/¿¿ has been achieved.


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    Title :

    Intensity-Modulated Fiber Bragg Grating Sensor System Employing Fiber Dispersion


    Contributors:
    Dong, Xinyong (author) / Tam, H. Y. (author) / Shum, P. (author)


    Publication date :

    2008-12-01


    Size :

    208331 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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