Fiber X300/X500 series is a Fiber Bragg Grating demodulator by scanning spectrum. It uses a scanning narrow-band semiconductor laser as light source to perform high-resolution fiber grating demodulation in the range of 40nm. In this paper, a novel demodulation algorithm based on the variable-step-size method and cross-correlation algorithm is proposed to demodulate the wavelength of an FBG. It is designed for static FBG measurement and can be used for real-time. Demodulation System for Fiber Optic Bragg Grating Dynamic Pressure Sensing Fiber optic Bragg gratings have been used for years to measure quasi-static phenomena. In aircraft engine applications there is a need to measure dynamic signals such as variable pressures. Fiber optic gratings are a new type of passive sensing element with high sensitivity, strong resistance to electromagnetic interference, corrosion resistance, and.
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