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Plasmon-Induced Transparency and Refractive Index Sensing Based on a Trapezoid Cavity Coupled with a Hexagonal Resonator

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Abstract

Tunable plasmon-induced transparency (PIT) effect is studied in a plasmonic device on the basis of the metal-insulator-metal (MIM) structure which consists of trapezoid and hexagonal cavities. The transmission characteristics are numerically studied in detail by the finite element method (FEM). Diverse geometrical parameters were altered to evaluate the characteristics of the structure, and the coupled mode theory (CMT) is utilized to verify the simulation results. The sensing characteristics of the device could also be analyzed by the simulative results which achieved from the transmission spectra. The structure we proposed has the capacity and potential to be utilized on integrated optical circuit field.

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Funding

This work was supported by the National Natural Science Foundation of China (Nos. 11504139 and 11811530052), the Natural Science Foundation of Jiangsu Province (Nos. BK20140167 and BK20170247), the China Postdoctoral Science Foundation (Nos. 2017M611693 and 2018T110440), and the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (No. 16KJB140016).

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Authors and Affiliations

  1. School of Mathematical & Physical Sciences, Xuzhou University of Technology, Xuzhou, 221018, China

    Dongdong Liu, Wei Fu, Jian Shao, Qun Zhang, Baiping Han & Daoxiang Teng

  2. School of Science, Jiangnan University, Wuxi, 214122, China

    Jicheng Wang

Authors
  1. Dongdong Liu
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  2. Wei Fu
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  3. Jian Shao
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  4. Jicheng Wang
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  5. Qun Zhang
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  6. Baiping Han
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  7. Daoxiang Teng
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Corresponding authors

Correspondence to Dongdong Liu or Jicheng Wang.

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Liu, D., Fu, W., Shao, J. et al. Plasmon-Induced Transparency and Refractive Index Sensing Based on a Trapezoid Cavity Coupled with a Hexagonal Resonator. Plasmonics 14, 663–671 (2019). https://doi.org/10.1007/s11468-018-0844-x

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  • DOI: https://doi.org/10.1007/s11468-018-0844-x

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