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Design and Optimization of the Multifunctional Rectangular Cavity Band-Pass Filter Based on the Surface Plasmon Polariton

机译：基于表面等离子体Polyiton的多功能矩形腔带通滤波器的设计与优化

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摘要

A novel multifunction filter based on the model of Fabry-Perot (F-P) resonant cavity is proposed in this paper. This filter is comprised of a rectangular cavity (400nmx200nm) and two narrow silicon baffles (40nmx50nm) which are placed next to the cavity separately. Its transmission characteristics are calculated by the numerical simulation software COMSOL Multiphysics which is based on the finite element method (FEM). The results show that with the increase of silicon baffles' length, an apparent red-shift of the transmission peak is observed. Moreover, not only a band-pass filter that the transmission peak can reach almost 90 % but also an excellent flat-top filter can be obtained by properly adjusting the other structural parameters of the rectangular cavity. Meanwhile, the simulation results are verified by the impedance matching (IM) model. The filter proposed in this paper performs well, possesses two functions, and provides a new option for the development of nano-optical devices.
机译：本文提出了一种基于法布里 - 珀罗（F-P）谐振腔模型的新型多功能滤波器。该过滤器包括矩形腔（400nmx200nm）和两个窄硅挡板（40nmx50nm），它们分开地放置在腔室旁边。其传输特性由基于有限元方法（FEM）的数值模拟软件COMSOL多体学计算。结果表明，随着硅挡板的长度的增加，观察到透射峰的表观红移。此外，不仅可以通过适当地调节矩形腔的其他结构参数，传输峰值可以达到近90％而且可以获得优异的平顶过滤器。同时，仿真结果由阻抗匹配（IM）模型验证。本文提出的过滤器表现良好，具有两个功能，并为纳米光学器件的开发提供了一种新选择。

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  • 来源
    《Plasmonics》 |2017年第5期|共6页
  • 作者

    Hu Nan; Zhang Guanmao; An Houlin; Shi Yue; Gu Mengqi;

  • 作者单位

    Lanzhou Univ Inst Modern Commun Technol Sch Informat Sci &

    Engn Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Inst Modern Commun Technol Sch Informat Sci &

    Engn Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Inst Modern Commun Technol Sch Informat Sci &

    Engn Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Inst Modern Commun Technol Sch Informat Sci &

    Engn Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Inst Modern Commun Technol Sch Informat Sci &

    Engn Lanzhou 730000 Gansu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理学;
  • 关键词

    Multifunction filter; Flat-top filter; Surface plasmon polariton; IM model; Transmission spectrum analysis;

    机译：多功能滤波器;平顶过滤器;表面等离子体Polariton;IM模型;传输频谱分析;

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