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首页> 外文期刊>Optical fiber technology >Fluoride fiber plasmonic sensor with multilayer variants of tungsten disulfide (WS_2): Seeking enhanced figure-of-merit via thermo-optic tuning of radiation damping
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Fluoride fiber plasmonic sensor with multilayer variants of tungsten disulfide (WS_2): Seeking enhanced figure-of-merit via thermo-optic tuning of radiation damping

机译：具有二硫化钨（WS_2）多层变体的氟化物纤维等离子体传感器：通过热光调谐辐射衰减来寻求改进的品质因数

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摘要

A multilayered fiber SPR sensor is studied with as many as five design variants governed by different number (N varied from 1 to 5) of WS2 monolayer for ethanol detection. The sensor design variants are simulated and analyzed at 785 nm wavelength. The dynamic radiation damping in terms of variable temperature and Ag layer thickness is enforced on the sensor variants to lead to possible sensing performance enhancement. Further, an attempt is made to more comprehensively evaluate the sensor's performance by including the power loss curve characteristics. M an optimum radiation damping (ORD) condition (23 degrees C temperature and 55.5 nm thick Ag layer at 785 nm wavelength), the figure of merit (FOM) of the fiber (ZBLAN core and NaF clad) SPR sensor with WS2 bilayer has the potential to reach to an ultrahigh magnitude of 27563.575 RIU-1 while the overall figure of merit (FOM*) reaches to 62293.68 RIU-1. The next best combination (i.e., with 4 monolayers of WS2, 29.1 degrees C temperature, and 54.6 nm thick Ag layer at 785 nm wavelength) provides FOM of 27028.217 RIU-1 and FOM* of 61813.53 RIU-1). The results are explained in terms of physical concepts such as light absorption, Rayleigh scattering and thermo-optic effects in sensor constituents (Ag and WS2, in particular) converging at dynamic nature of radiation damping in plasmonic structures. The proposed sensor can be an important milestone in developing highly sensitive and accurate fiber optic chemical sensors.
机译：研究了一种多层光纤SPR传感器，该传感器具有多达5种设计变体，这些变体受用于检测乙醇的WS2单层不同数量（N从1到5）的控制。传感器设计变量在785 nm波长下进行仿真和分析。在可变的温度和Ag层厚度方面，动态辐射阻尼在传感器型号上得到了加强，从而可能提高传感性能。此外，试图通过包括功率损耗曲线特性来更全面地评估传感器的性能。在最佳辐射衰减（ORD）条件下（温度23摄氏度，波长785 nm处55.5 nm厚的Ag层），具有WS2双层结构的光纤（ZBLAN芯和NaF包覆）SPR传感器的品质因数（FOM）具有可能达到27563.575 RIU-1的超高量级，而总品质因数（FOM *）达到62293.68 RIU-1。次佳的组合（即具有WS2的4个单层，29.1摄氏度的温度和785 nm波长的54.6 nm厚的Ag层）提供的FOM为27028.217 RIU-1和FOM *为61813.53 RIU-1）。根据物理概念（例如光吸收，瑞利散射和传感器组件（尤其是Ag和WS2）中的热光效应）的物理概念来解释结果，这些概念收敛于等离激元结构中辐射阻尼的动态特性。所提出的传感器可能是开发高度灵敏和精确的光纤化学传感器的重要里程碑。

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  • 来源
    《Optical fiber technology》 |2019年第12期|102037.1-102037.9|共9页
  • 作者

  • 作者单位

    Natl Inst Technol Delhi Dept Appl Sci Phys Div Delhi 110040 India;

    Natl Inst Technol Delhi Dept Elect & Commun Engn Delhi 110040 India;

  • 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

    Fluoride fiber; Plasmon; Sensor; WS2; Figure of merit; Thermo-optic effect;

    机译：氟化物纤维;等离子传感器;WS2;功绩图;热光效应;

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