Simultaneous measurement of strain and temperature using Fabry–P&#233;rot interferometry and antiresonant mechanism in a hollow-core fiber

Chong He; Cheng Zhou; Qian Zhou; Shiyi Xie; Mengzhe Xiao; Jiajun Tian; Yong Yao

doi:10.3788/COL202119.041201

Journals >Chinese Optics Letters >Volume 19 >Issue 4 >Page 041201 > Article

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

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DOI: 10.3788/COL202119.041201 Cite this Article Set citation alerts

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 Copy Citation Text

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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.

Keywords

antiresonance Fabry–Pérot interference fiber-optic sensor