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Received: Jun. 20, 2020
Accepted: Oct. 9, 2020
Posted: Jan. 4, 2021
Published Online: Jan. 8, 2021
The Author Email: Jiajun Tian (tianjiajun@hit.edu.cn)
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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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Instrumentation, Measurement, and Optical Sensing
Chinese Optics Letters, Vol. 19, Issue 4, 041201 (2021)
Simultaneous measurement of strain and temperature using Fabry–Pérot interferometry and antiresonant mechanism in a hollow-core fiber
Chong He, Cheng Zhou, Qian Zhou, Shiyi Xie, Mengzhe Xiao, Jiajun Tian*, and Yong Yao
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.
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