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Abnormal sensing properties of surface plasmon resonance sensor based on photonic crystal fibers

机译：基于光子晶体纤维的表面等离子体谐振传感器的异常感测性能

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摘要

A side-core photonic crystal fiber (PCF)-based on a surface plasmon resonance (SPR) sensor with a silver core coated by analyte is studied. Compared with the structure of an analyte hole coated by a nano-metal layer, abnormal sensing properties are observed, in which the y-polarized fundamental mode is more effectively coupled with the surface-plasmon-polariton (SPP) mode than with the x-polarized fundamental mode. This structure can also enhance the overlapping area of the core and SPP modes. The characteristics of the refractive-index (RI) sensing are analyzed using the full vector finite-element method in detail. The average wavelength sensitivity can reach 23821 nm/refractive index unit (RIU) with a resolution of 4.2x10(-6) RIU for an analyte RI range of 1.38-1.44. In addition, the amplitude sensitivities depending on the size of the silver core are also analyzed.
机译：研究了基于与分析物涂覆的银芯的表面等离子体谐振（SPR）传感器上的侧芯光子晶体纤维（PCF）。与由纳米金属层涂覆的分析物孔的结构相比，观察到异常感测性质，其中Y偏振的基本模式与表面等离子体 - 极性（SPP）模式更有效地耦合而不是x-极化的基本模式。该结构还可以增强核心和SPP模式的重叠区域。使用全矢量有限元方法详细分析折射率（RI）感测的特征。平均波长灵敏度可达到23821nm /折射率单元（RIU），分辨率为1.38-1.44的分析物Ri范围的4.2×10（-6）RiU的分辨率。另外，还分析了取决于银芯的尺寸的幅度敏感性。

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  • 来源
    《Optical fiber technology》 |2019年第3期|248-252|共5页
  • 作者

    Liu Juan; Liang Hong-Qin; Liu Bin; He Xing-Dao; Chen Zhong-Ping;

  • 作者单位

    Nanchang HangKong Univ Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Nanchang HangKong Univ Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Nanchang HangKong Univ Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Nanchang HangKong Univ Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi Peoples R China;

    Nanchang HangKong Univ Jiangxi Engn Lab Optoelect Testing Technol Nanchang 330063 Jiangxi 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
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