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.
Fiber optic grating demodulation using a Fourier-transform spectrometer
Fourth Pacific Northwest Fiber Optic Sensor Workshop ; 1998 ; Troutdale,OR,United States
Proc. SPIE ; 3489
1998-09-23
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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