Abstract
Sampled fiber grating is a novel fiber Bragg grating. Because of it is flexible, passive, low insertion loss and small polarization dependent. It causes great interest and enthusiasm of the people in many areas. Ambient temperature and strain can both affect sampled grating reflection spectrum. On the base of analysis of sampled grating temperature and strain sensing model ,we can use computer to simulate the sampled grating temperature and strain sensing experiments to get Sampled grating temperature sensing data and strain sensing data. By analyzing the factors of temperature and strain which affect the spectral characteristics of the sampled grating, and using regression analysis methods to respectively get the 4 parameters A, B, C, D of sensing properties, so we can simultaneously measure the changes of temperature and strain through single sampled grating.
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