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A spiral-polished fiber sensor for strain and temperature measurement

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Abstract

We propose and experimentally investigate a spiral-polished single-multi-single-mode (SP-SMS) fiber sensor for the simultaneous measurement of strain and temperature. This special spiral shape on a multimode fiber is fabricated by a high-frequency CO2 laser, which excites higher order cladding modes in the interference process and leads to high strain sensitivity. Experimental results show that the strain sensitivity for the proposed structure in the transmission spectrum of two marked interference dips is − 17 pm/με and − 1 pm/με in the range of 0–600 με. Moreover, temperature sensitivities of 10 pm/℃ and 13.3 pm/℃ are obtained in the range of 30–150 ℃. Furthermore, the proposed sensor is inexpensive, is easy to fabricate and has a compact structure.

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Acknowledgements

This work was funded by the Joint Research Fund in Astronomy under a cooperative agreement between the National Natural Science Foundation of China (NSFC) and Chinese Academy of Sciences (CAS) under No. U1831115, U1931206, U2031132, the Dean Project of Guangxi Key Laboratory of Wireless Broadband Communication and Signal Processing (GXKL06190106), key projects of the Natural Science Foundation of Heilongjiang Province (ZD2019H003), and the Fundamental Research Funds for the Central Universities to Harbin Engineering University. Corresponding author: Tao Geng, e-mail: (gengtao_hit_oe@126.com).

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Authors and Affiliations

  1. Key Lab of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin, 150001, China

    Yiwei Ma, Chunbo Su, Yang Yi, Min Zhao, Jing Sun, Senyu Wang, Xiaoyang Li, Geng Tao, Shengnan Yu & Weimin Sun

  2. Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin, 541004, China

    Chengguo Tong

  3. Photonics Research Center, Guilin University of Electronics Technology, Guilin, 541004, China

    Libo Yuan

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  1. Yiwei Ma
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  2. Chunbo Su
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  3. Yang Yi
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  4. Min Zhao
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  5. Jing Sun
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  8. Geng Tao
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  9. Shengnan Yu
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  10. Chengguo Tong
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  11. Weimin Sun
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Correspondence to Geng Tao.

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Ma, Y., Su, C., Yi, Y. et al. A spiral-polished fiber sensor for strain and temperature measurement. Appl. Phys. B 127, 91 (2021). https://doi.org/10.1007/s00340-021-07636-3

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  • DOI: https://doi.org/10.1007/s00340-021-07636-3

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