.Wavelength-shift detection system based on matching-FBG with enhanced temperature sensitivity[J].Optoelectronics Letters,2006,2(2):139-141 Wavelength-shift detection system based on matching-FBG with enhanced temperature sensitivity ZHANG Zhi-guo SU Fu-gen ZHANG Min YE Pei-da Key Lab of Optical Communication ＆ Lightwave Technologies, Education Ministry of China, Beijing University of Posts ＆ Telecomnunications , Beijing 100876, China Abstract:       In this letter a fiber Bragg grating (FBG) interrogation system based on thermistance and matching-FBG of temperature sensitivity enhancement is proposed and demonstrated. According to the relationship between the center wavelength of the matching-FBG and the resistance value of the thermistance, the scheme interrogates the wavelength-shift by adjusting the matching-FBGs temperature and detecting the resistance value of the thermistance. In measure experiments, the results show that the precision of the proposed system is 0.048 nm in a range of 9.4 nm. This work was supported by the Natural Science Foundation of Beijing (Serial Number is: 030313) and the National Natural Science Foundation of China (Serial Number is: 60372100). Hits: 3619 Download times: 178 View Full Text    Download reader