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首页> 外文期刊>IEEE sensors journal >Sensitivity-Enhanced Strain Sensor Based on Thin-Core Fiber Modal Interferometer Interacted With Tilted Fiber Bragg Grating
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Sensitivity-Enhanced Strain Sensor Based on Thin-Core Fiber Modal Interferometer Interacted With Tilted Fiber Bragg Grating

机译：基于薄芯光纤模态干涉仪与倾斜光纤布拉格光栅相互作用的灵敏度增强型应变传感器

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摘要

A sensitivity-enhanced strain sensor constructed by a 7-mm-long thin-core fiber (TCF) splicing with a 10-mm-long tilted fiber Bragg grating (TFBG) was proposed. The modal interferometer formed by the TCF will interact with the spectrum of the TFBG to form an overlapped spectrum, which will extremely increase the axial strain sensitivity of the TFBG. Experimental results showed that the wavelength shifts of the resonant dip in the overlapped spectra for the applied axial strain have a high sensitivity of 0.67 pm/mu epsilon. Meanwhile, the proposed sensor has the temperature self-compensation function for the variation of the external temperature simply by measuring the relative wavelength shifts of the Bragg mode of the TFBC.
机译：提出了一种灵敏度增强的应变传感器，该传感器由7毫米长的薄芯光纤（TCF）与10毫米长的倾斜光纤布拉格光栅（TFBG）拼接而成。由TCF形成的模态干涉仪将与TFBG的光谱相互作用以形成重叠光谱，这将极大地提高TFBG的轴向应变灵敏度。实验结果表明，在所施加的轴向应变的重叠光谱中，共振凹陷的波长偏移具有0.67 pm / mu epsilon的高灵敏度。同时，提出的传感器仅通过测量TFBC的布拉格模式的相对波长偏移就具有针对外部温度变化的温度自补偿功能。

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  • 来源
    《IEEE sensors journal》 |2019年第5期|1802-1806|共5页
  • 作者

    Liu Zexu; Shen Changyu; Xiao Yike; Gong Jiaqi; Wang Youqing; Lang TingTing; Zhang Yang; Xu Weixin; Zhang Tianhu; Jing Zhenguo; Jin Yongxin; Peng Wei;

  • 作者单位

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    Dalian Univ Technol, Sch Phys & OptoelectrTechnol, Dalian 116024, Peoples R China;

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    Dalian Univ Technol, Sch Phys & OptoelectrTechnol, Dalian 116024, Peoples R China;

    China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China;

    Dalian Univ Technol, Sch Phys & OptoelectrTechnol, Dalian 116024, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Tilted fiber Bragg gratings; strain sensor;

    机译：倾斜的光纤布拉格光栅;应变传感器;

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