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首页> 外文期刊>Optical and quantum electronics >High-sensitive measurements of refractive-index and magnetic-field based on liquid-infiltrated photonic crystal fiber with an elliptically-shaped core
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High-sensitive measurements of refractive-index and magnetic-field based on liquid-infiltrated photonic crystal fiber with an elliptically-shaped core

机译：具有椭圆形芯的液体渗透光子晶体纤维的折射率和磁场的高敏感测量

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摘要

A high-sensitive refractive index (RI) measuring method is proposed through the combined use of elliptical core photonic crystal fiber (PCF) and Sagnac interferometer. The sensing performance of the designed structure are studied theoretically using the finite element method. We analyze the phase birefringence and group birefringence to obtain the dependence of RI sensitivity on the operable wavelength λ. The RI sensitivity can be enhanced 10-20× by introducing a liquid-filled elliptical hole into the fiber core. Additionally, the single-core structure can convert to twin-core case just through decreasing the RI of filling liquid, and the spectral response is adjustable by changing main structural parameters. The simulation results show that the average sensitivity is about 1,14,967 nm/RIU within the RI range of 1.463-1.467, which corresponds to a resolution of 1.74 × 10~(-6) RIU. Finally, the sensing method is applied to magnetic-field measurement as an example, and the magnetic-field sensitivity can reach up to 3.45 nm/Oe within the range of 89.9-271.0 Oe. The measurement principle also applicable to other sensing fields, and the proposed structure is insensitive to fiber bending without fabrication complexity.
机译：通过联合使用椭圆芯光子晶体纤维（PCF）和SAGNAC干涉仪提出了一种高灵敏度折射率（RI）测量方法。设计结构的感测性能使用有限元方法研究。我们分析相双折射和组双折射以获得RI灵敏度对可操作波长λ的依赖性。通过将液体填充的椭圆孔引入纤维芯中，可以增强RI灵敏度10-20×。另外，单芯结构可以通过降低填充液的RI来转换为双芯壳，并且通过改变主结构参数来调节光谱响应。仿真结果表明，平均灵敏度约为1.463-1.467的RI范围内的1,14,967nm / Riu，其对应于1.74×10〜（-6）Riu的分辨率。最后，作为示例将传感方法应用于磁场测量，磁场灵敏度可以在89.9-271.0 OE的范围内达到高达3.45nm / OE。测量原理也适用于其他感测场，并且所提出的结构对纤维弯曲不敏感而没有制造复杂性。

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  • 来源
    《Optical and quantum electronics》 |2020年第12期|507.1-507.13|共13页
  • 作者

    Hai Liu; Haoran Wang; Yanzeng Zhang; Cong Chen; Bingbing Bai; Qiyuan Shao;

  • 作者单位

    School of Information and Control Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

    School of Information and Control Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

    School of Information and Control Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

    School of Information and Control Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

    School of Information and Control Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu China;

    School of Information and Control Engineering China University of Mining and Technology Xuzhou 221116 Jiangsu 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

    Photonic crystal fiber; Refractive index measurement; Sagnac interferometer;

    机译：光子晶纤维;折射率测量;Sagnac干涉仪;

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