文献类型：期刊文献

英文题名：A Knee-Flexion Angle Optical Fiber Sensor Based on Spherical Fused Triple-Clad Fiber

作者：Zhu, Xiaojun[1,2];Qian, Jiayi[3];Liu, Wen[3];Li, Shuai[4];Ji, Yongjuan[5];Cao, Juan[3];Zhang, Guoan[3];Cai, Yan[3];Yang, Yongjie[3]

第一作者：Zhu, Xiaojun

通信作者：Cao, J[1];Yang, YJ[1]

机构：[1]Nantong Univ, Sch Microelect, Nantong 226019, Peoples R China;[2]Nantong Univ, Jiangsu Key Lab Semicond Device & IC Design Packag, Nantong 226019, Peoples R China;[3]Sch Informat Sci & Technol, Nantong 226019, Peoples R China;[4]Nanjing Univ Aeronaut & Astronaut, Sch Mech & Elect Engn, Nanjing 210016, Peoples R China;[5]Gansu Univ Chinese Med, Sch Humanities & Foreign Languages, Lanzhou 730101, Peoples R China

第一机构：Nantong Univ, Sch Microelect, Nantong 226019, Peoples R China

通信机构：[1]corresponding author), Sch Informat Sci & Technol, Nantong 226019, Peoples R China.

年份：2024

卷号：36

期号：21

起止页码：1277

外文期刊名：IEEE PHOTONICS TECHNOLOGY LETTERS

收录：;EI(收录号：20243817043801);Scopus(收录号：2-s2.0-85203649255);WOS:【SCI-EXPANDED(收录号:WOS:001327394900008)】；

基金：This work was supported by the Postgraduate Research and Practice Innovation Program of Jiangsu Province under Grant SJCX24_2020.

语种：英文

外文关键词：Temperature measurement; Claddings; Sensitivity; Optical fiber sensors; Temperature sensors; Optical fibers; Interference; Knee-flexion angle; temperature; optical fiber sensor; triple-clad optical fiber; spherical structure

摘要：A knee-flexion angle sensor based on spherical fused triple-clad fiber (TCF) is proposed and demonstrated. The optical path difference between the core and cladding modes in the angle sensor changes as the knee joint flexion angle changes, resulting in deviations in the interference spectrum. We conducted comparison experiments on various TCF lengths. When the TCF length is 3 cm, the maximum sensor's angle detection range is from 0 degrees to 110 degrees. The angle sensitivity of the sensor is -0.35 nm/degrees, and the linear regression coefficient (R (2) ) is 99.6 %, respectively. Furthermore, in the temperature range of 30-90 degrees C, the maximum temperature sensitivity is 0.08 nm/degrees C, and the R (2) is 99.8 %. The sensor has the advantage of being compact, easy to manufacture, and highly repeatable, making it suitable for real-time human health monitoring and rehabilitation.