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Hybrid MEFPI/FBG sensor for simultaneous measurement of strain and magnetic field

机译：MEFPI / FBG混合传感器可同时测量应变和磁场

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摘要

A hybrid fiber-optic sensor consisting of a micro extrinsic Fabry-Perot Interferometer (MEFPI) and an etched fiber Bragg grating (FBG) is proposed, which can measure strain and magnetic field simultaneously. The etched FBG is sealed in a capillary with ferrofluids to detect the surrounding magnetic field. FBG with small diameter will be more sensitive to magnetic field is confirmed by simulation results. The MEFPI sensor that is prepared through welding a short section of hollow-core fiber (HCF) with single-mode fiber (SMF) is effective for strain detection. The experiment shows that strain and magnetic field can be successfully simultaneously detected based on hybrid MEFPI/FBG sensor. The sensitivities of the strain and magnetic field intensity are measured to be up to 1.41 pm/mu epsilon and 5.11 pm/mT respectively. There is a negligible effect on each other, hence simultaneously measuring strain and magnetic field is feasible. It is anticipated that such easy preparation, compact and low-cost fiber-optic sensors for simultaneous measurement of strain and magnetic field could find important applications in practice.
机译：提出了一种混合光纤传感器，该传感器由微外部法布里-珀罗干涉仪（MEFPI）和蚀刻光纤布拉格光栅（FBG）组成，可以同时测量应变和磁场。蚀刻后的FBG用铁磁流体密封在毛细管中，以检测周围的磁场。仿真结果证实了小直径的光纤光栅对磁场更加敏感。通过将一小段空心光纤（HCF）与单模光纤（SMF）焊接制成的MEFPI传感器对于应变检测非常有效。实验表明，基于混合MEFPI / FBG传感器可以成功同时检测应变和磁场。应变和磁场强度的灵敏度分别被测量为分别高达1.41 pm / mu epsilon和5.11 pm / mT。彼此之间的影响可忽略不计，因此同时测量应变和磁场是可行的。可以预料到，这种易于制备，紧凑且低成本的用于同时测量应变和磁场的光纤传感器将在实践中找到重要的应用。

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  • 来源
    《Optical fiber technology》 |2017年第12期|32-36|共5页
  • 作者

    Chen Mao-qing; Zhao Yong; Lv Ri-qing; Xia Feng;

  • 作者单位

    Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China;

    Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China;

    Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China;

    Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fiber sensor; Fabry-Perot; Low-frequency acoustic pressure sensor; Hollow-core fiber (HCF);

    机译：光纤传感器;Fabry-Perot;低频声压传感器;空心光纤（HCF）;

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