文献类型：期刊文献

英文题名：Temperature-Immune High-Sensitivity Curvature Sensor Based on Symmetric Eight-Core Fiber mach-Zehnder Interferometer

作者：Zhu, Xiaojun[1];Wang, Yan[1];Zhuang, Haoran[1];Chen, Feijie[1];Qian, Jiayi[1];Ji, Yongjuan[2];Cao, Juan[1];Liu, Hai[3];Wu, Wuming[4];Zhao, Jicong[1]

第一作者：Zhu, Xiaojun

通信作者：Zhao, JC[1]

机构：[1]Nantong Univ, Sch Microelect & Integrated Circuits, Sch Informat Sci & Technol, Jiangsu Key Lab Semi Dev & IC Design Package & Tes, Room 308,Bldg 5,Seyuan Campus,9 Seyuan Rd, Nantong 226019, Jiangsu Provinc, Peoples R China;[2]Gansu Univ Chinese Med, Sch Humanities & Foreign Languages, Lanzhou, Peoples R China;[3]China Univ Min & Technol, Sch Informat & Control Engn, Xuzhou, Jiangsu, Peoples R China;[4]Hunan Inst Informat Technol, Sch Elect Sci & Engn, Changsha, Hunan, Peoples R China

第一机构：Nantong Univ, Sch Microelect & Integrated Circuits, Sch Informat Sci & Technol, Jiangsu Key Lab Semi Dev & IC Design Package & Tes, Room 308,Bldg 5,Seyuan Campus,9 Seyuan Rd, Nantong 226019, Jiangsu Provinc, Peoples R China

通信机构：[1]corresponding author), Nantong Univ, Sch Microelect & Integrated Circuits, Sch Informat Sci & Technol, Jiangsu Key Lab Semi Dev & IC Design Package & Tes, Room 308,Bldg 5,Seyuan Campus,9 Seyuan Rd, Nantong 226019, Jiangsu Provinc, Peoples R China.

年份：2025

卷号：44

期号：4

起止页码：365

外文期刊名：FIBER AND INTEGRATED OPTICS

收录：;EI(收录号：20252918796636);Scopus(收录号：2-s2.0-105010618545);WOS:【SCI-EXPANDED(收录号:WOS:001528922200003)】；

基金：This work was supported by the the Central guidance on local science and technology development funding projects [No. 2023ZY1023]; Postgraduate Research & Practice Innovation Program of Jiangsu Province [No. SJCX25_1994].

语种：英文

外文关键词：Mach-Zehnder Interferometer; spherical structure; eight-core fiber; temperature

摘要：A high-sensitivity curvature Mach-Zehnder Interferometer (MZI) fiber sensor utilizing eight-core fiber (ECF) with temperature immunity was demonstrated and proposed. The sensor is constructed by sandwiching the ECF between two sections of single-mode fiber (SMF), and the ends of the SMFs are fused with spherical structures, forming a symmetric structure of the SMF-Spherical structure-ECF-Spherical structure-SMF. The ECF provides a multi-path transmission for different light modes to obtain the interference phenomenon. The spherical structure can effectively improve the splitting and combining of the light beams between SMF and ECF. In the curvature detection, the maximum curvature sensitivity is 101.18569 dB/m-1 with a range from 0 m-1 to 0.09142 m-1 and a linearity of 0.989, which is the highest curvature sensitivity, to the best of our knowledge, in the intensity-modulated multi-core fiber MZI sensors. Furthermore, when the temperature range changes between 62 degrees C and 94 degrees C, the maximum temperature sensitivity can reach only -0.05202 dB/degrees C. These results indicate that the proposed sensor can minimize the cross-sensitivity between curvature and temperature measurements, which provides effective experimental support for the research of high-performance optical fiber sensors based on multi-core fiber.