2D and 3D Shape Sensing Based on 7-Core Fiber Bragg Gratings

作     者：Tianting LAI Pu CHENG Congliao YAN Chi LI Wenbin HU Minghong YANG Tianting LAI;Pu CHENG;Congliao YAN;Chi LI;Wenbin HU;Minghong YANG

作者机构：National Engineering Laboratory for Fiber Optic Sensing TechnologyWuhan University of TechnologyWuhan 430070China 

出 版 物：《Photonic Sensors》 (光子传感器（英文版）)

年 卷 期：2020年第10卷第4期

页      面：306-315页

核心收录：

学科分类：070207[理学-光学] 07[理学] 080202[工学-机械电子工程] 08[工学] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：supported in part by Major Technique Innovation Program of Hubei Province of China(Grant No.2018AAA016) the National Natural Science Foundation of China(NSFC)(Grant No.61575151) 

主　　题：Shape sensing fiber Bragg gratings multi-core fiber 

摘      要：A fiber-optic shape sensing based on 7-core fiber Bragg gratings(FBGs)is proposed and experimentally *** investigations are presented for two-dimensional(2D)and three-dimensional(3D)shape reconstruction by distinguishing bending and twisting of 7-core optical fiber with *** curvature and bending orientation can be calculated by acquiring FBG wavelengths from any two side cores among the six outer *** the shape sensing in 3D space is computed by analytic geometry *** experiments corresponding of 2D and 3D shape sensing are demonstrated and conducted to verify the theoretical *** resolution of curvature is about 0.1 m^(-1) for 2D *** error of angle in shape reconstruction is about 1.89°for 3D *** proposed sensing technique based on 7-core FBGs is promising of high feasibility,stability,and repeatability,especially for the distinguishing ability on the bending orientation due to the six symmetrical cores on the cross-section.