Pacific Northwest National Laboratory is developing a fiber optic grating sensor demodulator using a low cost static Fourier-transform interferometer. The spectrometer uses a fiber optic source and a plane mirror to form an interferogram in the spatial domain that is recorded by a linear photodiode array detector. Using this instrument with an interferogram fringe spacing of 20 microns provides fiber grating strain resolution of about 700-microstrain.


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    Title :

    Fiber optic grating demodulation using a Fourier-transform spectrometer


    Contributors:

    Conference:

    Fourth Pacific Northwest Fiber Optic Sensor Workshop ; 1998 ; Troutdale,OR,United States


    Published in:

    Publication date :

    1998-09-23





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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