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首页> 外文期刊>Optics and Lasers in Engineering >Temperature self-compensative all-fiber magnetic field sensing structure based on no-core fiber cascaded with fiber Bragg gratings
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Temperature self-compensative all-fiber magnetic field sensing structure based on no-core fiber cascaded with fiber Bragg gratings

机译：基于无芯光纤与光纤布拉格光栅级联的温度自补偿全光纤磁场感应结构

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摘要

A kind of fiber-optic magnetic field sensing structure based on no-core fiber (NCF) cascaded with fiber Bragg gratings (FBGs) is proposed. The NCF is sandwiched between two pieces of singlemode fibers to form singlemode-no-core-singlemode (SNS) interferometric fiber structure, which is cladded with the magnetic field sensitive material (i.e. magnetic fluid). Measurement is done by monitoring the differential intensity of the signal at the two Bragg peak wavelengths, which increases the magnetic field sensitivity and can decrease the cost of the pragmatic sensing system. Due to the similar thermal effect of NCF and FBG, the temperature cross-sensitivity is greatly reduced. The achieved magnetic field sensitivity is 0.1774 dB/mT at 0-6 mT and 1.9296 dB/mT at 6-18 mT. The temperature sensitivity is only 0.0623 dB/ degrees C in the range of 21-35 degrees C. The corresponding device does not necessitate intensity-stabilized broadband light source as well.
机译：提出了一种基于无芯光纤（NCF）和光纤布拉格光栅（FBG）级联的光纤磁场传感结构。 NCF夹在两段单模光纤之间，以形成单模无芯单模（SNS）干涉式光纤结构，该结构包覆有对磁场敏感的材料（即磁性流体）。通过监视两个布拉格峰值波长处信号的差分强度来完成测量，这可以提高磁场灵敏度，并可以降低实用的传感系统的成本。由于NCF和FBG具有相似的热效应，因此大大降低了温度交叉敏感度。在0-6 mT时达到的磁场灵敏度为0.1774 dB / mT，在6-18 mT时达到1.9296 dB / mT。在21-35摄氏度的范围内，温度灵敏度仅为0.0623 dB /摄氏度。相应的设备也无需使用强度稳定的宽带光源。

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  • 来源
    《Optics and Lasers in Engineering》 |2019年第8期|26-29|共4页
  • 作者

    Jia Zixuan; Pu Shengli; Rao Jie; Zhao Yongliang; Li Yuqi; Yao Tianjun;

  • 作者单位

    Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China|Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Coll Sci, Shanghai 200093, 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

    No-core fiber; Fiber Bragg grating; Magnetic field measurement;

    机译：无芯光纤;布拉格光栅;磁场测量;

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