Abstract
We report a temperature and pressure sensor based on fiber Bragg grating(FBG) lasers, the analytical expressions for the shift of the Bragg wavelength with temperature and pressure are derived, the effect of operation temperature of fiber Bragg grating on the central wavelength of fiber Bragg grating laser is discussed experimentally. The result demonstrates that the central wavelength of laser is a function of the operation temperature of FBG, and the temperature coefficient of the fiber Bragg grating is 1.27×10 -5 /°C.
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