Chinese Optics Letters, 2021, 19 (4): 041201, Published Online: Jan. 8, 2021   

Simultaneous measurement of strain and temperature using Fabry–Pérot interferometry and antiresonant mechanism in a hollow-core fiber Download: 792次

Author Affiliations
School of Electronics and Information Engineering, Harbin Institute of Technology, Shenzhen 518055, China
Abstract
A fiber-optic sensor for the simultaneous measurement of strain and temperature is proposed and experimentally demonstrated based on Fabry–Pérot (FP) interference and the antiresonance (AR) mechanism. The sensor was implemented using a single-mode fiber (SMF)–hollow-core fiber–SMF structure. A temperature sensitivity of 21.11 pm/°C was achieved by tracing the troughs of the envelope caused by the AR mechanism, and a strain sensitivity of 2 pm/με was achieved by detecting the fine fringes caused by the FP cavity. The results indicate that the dual-parameter sensor is stable and reliable.

Chong He, Cheng Zhou, Qian Zhou, Shiyi Xie, Mengzhe Xiao, Jiajun Tian, Yong Yao. Simultaneous measurement of strain and temperature using Fabry–Pérot interferometry and antiresonant mechanism in a hollow-core fiber[J]. Chinese Optics Letters, 2021, 19(4): 041201.

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