Open AccessTheory and experiment about in-fiber Bragg grating temperature sensing
Author(s) -
Xueguang Qiao,
Zhang Jia,
Haiwei Fu,
Ming Li,
Zhou Hong
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.494
Subject(s) - fiber bragg grating , materials science , optics , phosfos , sensitivity (control systems) , long period fiber grating , wavelength , fiber optic sensor , nonlinear system , optical fiber , dispersion shifted fiber , physics , electronic engineering , engineering , quantum mechanics
A theoretical method of in-fiber Bragg grating temperature sensing has been proposed. Based on a temperature sensing model of in-fiber Bragg gratings, it was deduced that the analytical formulae of first-order and second-order and effective linear sensitivity coefficients of in-fiber Bragg grating temperature sensing. The theoretical values of each sensitivity coefficient was calculated. Conic multinomial has been obtained by experiment. The results of theory and experiment were compared and analyzed. Furthermore, the influence of quartzose mechanical parameters on temperature sensing characters of in-fiber Bragg gratings and the application range of linear and nonlinear relations of reflected wavelength versus temperature were also discussed.