Compact fiber sensor for simultaneous strain and temperature measurement based on malposition splice cascading single-mode-multimode-single-mode fiber grating

Ailin Yin; Yalong Wei; Bing Wu; Wenyan Xu; Yujia Zhao; Xiaojun Cui; Guoyu Zhang; Jie Shi; Jie Gao; Feng Peng; Jun Yang

doi:10.1117/12.3016846

18 March 2024 Compact fiber sensor for simultaneous strain and temperature measurement based on malposition splice cascading single-mode-multimode-single-mode fiber grating

Ailin Yin, Yalong Wei, Bing Wu, Wenyan Xu, Yujia Zhao, Xiaojun Cui, Guoyu Zhang, Jie Shi, Jie Gao, Feng Peng, Jun Yang

Author Affiliations +

Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 131040C (2024) https://doi.org/10.1117/12.3016846
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China

Abstract

This paper presents a novel malposition fusion splice cascade single mode, graded index multimode, and single mode fiber (MS-SMS) structure for simultaneous measurement of strain and temperature. The MS-SMS sensor consists of a 4-period single mode fiber graded refractive index multimode fiber splice with a total length of 4.8 mm. Moreover, higher order cladding patterns are excited by malposition fusion splice. The theoretical analysis simulations are in agreement with the experimental results. Experimental validation showed the high strain and temperature sensitivity of the sensor. The sensor has two resonant dips with strain sensitivities of 7.6 pm/με and -8.7 pm/με, respectively. And the sensitivities of the two resonance depressions reached 48 pm/°C and 55.4 pm/°C, respectively.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Ailin Yin, Yalong Wei, Bing Wu, Wenyan Xu, Yujia Zhao, Xiaojun Cui, Guoyu Zhang, Jie Shi, Jie Gao, Feng Peng, and Jun Yang "Compact fiber sensor for simultaneous strain and temperature measurement based on malposition splice cascading single-mode-multimode-single-mode fiber grating", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 131040C (18 March 2024); https://doi.org/10.1117/12.3016846

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KEYWORDS

Sensors

Single mode fibers

Cladding

Temperature metrology

Fiber optics sensors

Fusion splicing

Refractive index

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