Qian Zhou,Ti-gang Ning,Li Pei,Jing Li,Chao Li,Chan Zhang.Temperature-insensitive fiber Bragg grating strain sensor[J].Optoelectronics Letters,2012,8(6):414-417 Temperature-insensitive fiber Bragg grating strain sensor Author Name Affiliation E-mail Qian Zhou  Key Lab. of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China    Ti-gang Ning  Key Lab. of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China    Li Pei  Key Lab. of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China  lipei@bjtu.edu.cn  Jing Li  Key Lab. of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China    Chao Li  Key Lab. of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China    Chan Zhang  Key Lab. of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China    Abstract:       A fiber Bragg grating strain sensor, whose reflection bandwidth is insensitive to temperature, is presented. The cross-sectional area is designed to change linearly. Under axial stress, there is a linear relationship between stress and average strain. Experimental results show that when temperature increases, reflection center wavelength shifts to longer wavelength, and there is a good linear relationship between center wavelength and temperature. When stress increases, reflection center wavelength shifts to longer wavelength, and reflection bandwidth increases. There are good linear relationships between reflection center wavelength and stress as well as reflection bandwidth and stress. Hits: 4107 Download times: 646 View Full Text    Download reader