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Simultaneous measurement of magnetic field and temperature based on NCF cascaded with ECSF in fiber loop mirror

机译：基于NCF在光纤环镜中与ECSF级联的磁场和温度的同时测量

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摘要

In this paper, we propose and experimentally demonstrate a dual-parameter sensor based on no-core fiber (NCF) cascaded with elliptical-core spun fiber (ECSF) in a Sagnac loop. Both NCF and ECSF are sealed in a capillary with the magnetic fluid to detect the magnetic field and temperature simultaneously. By introducing a section of NCF inside an elliptical-core spun fiber loop mirror (E-FLM) with optimizing fiber length, two extinct dips can be observed from 1480 to 1680 nm in the transmission spectrum. One dip is the result of multimode interference (MMI), while the other is induced by Sagnac interference of E-FLM. Hence, the simultaneous measurement of magnetic field and temperature can be realized by monitoring the shift of different wavelengths of two dips. Experimental results show that the dip of MMI is sensitive to the magnetic field (713.07 pm/mT), while the EFLM has almost no response to magnetic field. For the two dips monitored in the temperature measurement, the sensitivities of proposed sensor are-34.8 pm/degrees C and 304.55 pm/degrees C, respectively.
机译：在本文中，我们提出并实验地证明了基于在柱环环中的椭圆芯纺丝纤维（ECSF）级联的无核光纤（NCF）的双参数传感器。 NCF和ECSF均用磁性流体密封在毛细管中，以同时检测磁场和温度。通过在椭圆芯纺丝纤维回路镜（E-FLM）内引入NCF的一部分，通过优化纤维长度，可以在传输频谱中从1480到1680nm观察到两个灭绝的倾斜。一个DIP是多模干扰（MMI）的结果，而另一个倾向于E-FLM的SAGNAC干扰引起。因此，通过监测两个倾角的不同波长的偏移，可以实现磁场和温度的同时测量。实验结果表明，MMI的DIP对磁场敏感（713.07 PM / MT），而EFLM几乎没有对磁场的反应。对于在温度测量中监测的两种垂度，所提出的传感器的敏感性分别为-34.8 /℃和304.55μm/℃。

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  • 来源
    《Optical fiber technology》 |2019年第3期|45-49|共5页
  • 作者

    Sun Chunran; Wang Muguang; Dong Yue; Ye Shen; Jian Shuisheng;

  • 作者单位

    Beijing Jiaotong Univ Inst Lightwave Technol Key Lab All Opt Network & Adv Telecommun Network Minist Educ Beijing 100044 Peoples R China;

    Beijing Jiaotong Univ Inst Lightwave Technol Key Lab All Opt Network & Adv Telecommun Network Minist Educ Beijing 100044 Peoples R China;

    Beijing Jiaotong Univ Inst Lightwave Technol Key Lab All Opt Network & Adv Telecommun Network Minist Educ Beijing 100044 Peoples R China;

    Beijing Jiaotong Univ Inst Lightwave Technol Key Lab All Opt Network & Adv Telecommun Network Minist Educ Beijing 100044 Peoples R China;

    Beijing Jiaotong Univ Inst Lightwave Technol Key Lab All Opt Network & Adv Telecommun Network Minist Educ Beijing 100044 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

    Magnetic field measurement; Temperature measurement; Multimode interference; Fiber loop mirror;

    机译：磁场测量;温度测量;多模干扰;光纤环镜;

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