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Theoretical Study on the Relationship between Transmission Intensity and Tensile Force of Helical Long-Period Fiber Grating at Fixed Wavelength

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Abstract

This article uses the coupled-mode theory to analyze transmission intensity and the relationship between the tensile force at the fixed wavelength. It is found that the transmission intensity and tensile force are linearly related. In the experiment, helical long-period fiber grating is fabricated by a welding machine. The relationship between the transmission intensity and the tensile force at 1530 nm wavelength is investigated experimentally, and results are consistent with the theory. In addition, we also study the tensile force properties of three groups of different wavelengths and get the same conclusion. So many wavelengths in this relationship can be measured. This theory plays a guiding role in the research of new spiral fiber grating tension sensors.

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Funding

The work is support by the Science and Technology Research Program of Chongqing Education Commission of China (KJQN202001420) and (KJZDM202001401). The University Innovation Research Group of Shale Gas Optical Fiber Intelligent Sensing Technology (CXQT20027). Cooperative Projects between Undergraduate Universities in Chongqing and Institutes affiliated with Chinese Academy of Sciences (no. HZ2021014).

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Authors and Affiliations

  1. Key Laboratory of Micro/Nano Optoelectronic Devices and Intelligent Sensing System, School of Electronic Information and Engineering, Yangtze Normal University, 408100, Chongqing, China

    Yong Tang, Jiacong Huang, Kemin Lv, Li Zhang & Yunfeng Bai

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  1. Yong Tang
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  2. Jiacong Huang
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Correspondence to Yunfeng Bai.

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Tang, Y., Huang, J., Lv, K. et al. Theoretical Study on the Relationship between Transmission Intensity and Tensile Force of Helical Long-Period Fiber Grating at Fixed Wavelength. Bull. Lebedev Phys. Inst. 49, 214–220 (2022). https://doi.org/10.3103/S1068335622070089

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