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首页> 外文期刊>Applied optics >Optical sensing based on multimode Fano resonances in metal-insulator-metal waveguide systems with X-shaped resonant cavities
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Optical sensing based on multimode Fano resonances in metal-insulator-metal waveguide systems with X-shaped resonant cavities

机译：基于多模Fano谐振在具有X形谐振腔中的金属 - 绝缘子 - 金属波导系统中的光学感测

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摘要

A plasmonic metal-insulator-metal (MIM) waveguide system is proposed, which is composed of a symmetrical X-shaped resonant cavity and a bus waveguide with a baffle, and its Fano resonance and optical sensing characteristics are investigated by using the finite element method (FEM). The results show that the system allows easy implementation of up to four Fano resonances, and the maximum refractive index sensitivity and figure of merit are 1303 nm/RIU and 3113, respectively. The influences of the geometric parameters of the system on the Fano resonances are also investigated, and further the independent adjustments of the Fano resonance line shape and wavelength are realized. Moreover, when an additional X-shaped resonant cavity is added to the system, more ultra-sharp Fano resonances with considerable performances are obtained, which may enhance the parallel processing capability of the system. The proposed plasmonic MIM waveguide system may have potential applications in integrated photonic devices and nanoscale optical sensing. (C) 2021 Optical Society of America
机译：提出了一种等离子体金属-绝缘体-金属（MIM）波导系统，该系统由一个对称的X形谐振腔和一个带有挡板的总线波导组成，并用有限元方法研究了其Fano谐振和光学传感特性。结果表明，该系统可以轻松实现多达四个Fano共振，最大折射率灵敏度和优值分别为1303nm/RIU和3113。研究了系统几何参数对Fano共振的影响，实现了Fano共振线形状和波长的独立调节。此外，当系统中增加一个X形谐振腔时，可以获得更高性能的超尖锐Fano谐振，这可能会提高系统的并行处理能力。所提出的等离子体MIM波导系统在集成光子器件和纳米级光学传感方面具有潜在的应用前景。（2021）美国光学学会

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  • 来源
    《Applied optics》 |2021年第18期|共8页
  • 作者

    Li Jina; Chen Jianfeng; Liu Xing; Tian He; Wang Jinfang; Cui Jingang; Rohimah Siti;

  • 作者单位

    Northeast Forestry Univ Coll Sci Harbin 150040 Peoples R China;

    Northeast Forestry Univ Coll Sci Harbin 150040 Peoples R China;

    Northeast Forestry Univ Coll Sci Harbin 150040 Peoples R China;

    Northeast Forestry Univ Coll Sci Harbin 150040 Peoples R China;

    Shanghai Xin Yue Lian Hui Elect Technol Co Ltd Shanghai 200233 Peoples R China;

    Northeast Forestry Univ Coll Sci Harbin 150040 Peoples R China;

    Northeast Forestry Univ Coll Sci Harbin 150040 Peoples R China;

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