Xie Kai, Tan Tao, Mu Boxin, Duan Chao, Li Zhuoshu, Meng Yichen, Lv Zhongbin, Wei Jianlin, Tian Ye, Chai Quan, Liu Yanlei, Zhang Jianzhong, Yang Jun, Yuan Libo. Study on fiber Bragg grating displacement sensor with angle steel structure[J]. Opto-Electronic Engineering, 2018, 45(9): 180106