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Theoretical and numerical studies of microfiber coil resonator for ambient refractive index sensing

机译：用于环境折射率传感的超细纤维线圈谐振器的理论和数值研究

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摘要

An ambient refractive index (RI) sensor based on a microfiber coil resonator (MCR) is proposed. Using the coupling wave theory, the resonant properties of the MCR are theoretically studied. And then, using the finite difference time-domain method, the sensing characteristic of the sensor is investigated and the dependence of sensing characteristic on the MCR parameters is examined as well. Results show that the sensor is extremely sensitive to the ambient Rl variation. And, the microfiber diameter determines both the sensitivity and detection limit of the sensor. Further, the rod diameter determines the free spectral range of the MCR resonance spectrum and influences the detection range of the sensor. However, the sensor sensitivity is almost constant with the rod diameter change. So, for ensuring a good performance in actual experiment, the microfiber diameter should range from 400 nm to 1 μm, and the rod diameter should range from 20 μm to 2 mm. This work provides a guideline for future research on the RI sensor based on MCR.
机译：提出了一种基于微纤维线圈谐振器（MCR）的环境折射率（RI）传感器。使用耦合波理论，对MCR的谐振特性进行了理论研究。然后，采用时域有限差分法，研究了传感器的传感特性，并研究了传感特性对MCR参数的依赖性。结果表明该传感器对环境R1变化极为敏感。并且，超细纤维直径决定了传感器的灵敏度和检测极限。此外，杆直径决定了MCR共振谱的自由光谱范围，并影响传感器的检测范围。但是，传感器灵敏度随杆直径的变化几乎恒定。因此，为了确保在实际实验中具有良好的性能，微纤维直径应在400 nm至1μm的范围内，而棒直径应在20μm至2 mm的范围内。这项工作为将来基于MCR的RI传感器的研究提供了指南。

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  • 来源
    《Optical engineering》 |2018年第11期|117109.1-117109.5|共5页
  • 作者

    Xiaodong Luo; Yongfang Li; Chengju Ma; Yinggang Liu; Dequan Feng; Jing Zhang;

  • 作者单位

    Shaanxi Normal University, School of Physics and Information Technology, Chang-An Zone, Xi'an, China,Xi'an Shiyou University, School of Science, Yan-Ta Zone, Xi'an, China;

    Shaanxi Normal University, School of Physics and Information Technology, Chang-An Zone, Xi'an, China;

    Xi'an Shiyou University, School of Science, Yan-Ta Zone, Xi'an, China;

    Xi'an Shiyou University, School of Science, Yan-Ta Zone, Xi'an, China;

    Xi'an Shiyou University, School of Science, Yan-Ta Zone, Xi'an, China;

    Shaanxi Normal University, School of Physics and Information Technology, Chang-An Zone, Xi'an, 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

    microfiber; refractive index sensor; microfiber coil resonator;

    机译：超细纤维折射率传感器超细纤维线圈谐振器;

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