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Proceedings Paper

Fano resonances based on nanoscale plasmonic structure
Author(s): Yundong Zhang; Hui Li; Yongfeng Wu; Changqiu Yu; Ping Yuan
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Paper Abstract

The interaction between plasmonic resonances, sharp modes, and light in nanoscale plasmonic systems often leads to Fano interference effects. This occurs because the plasmonic excitations are usually spectrally broad and the characteristic narrow asymmetric Fano line-shape results upon interaction with spectrally sharper modes. We investigate a plasmonic waveguide system using the finite-difference time-domain (FDTD) method, which consists of a metal-insulator-metal waveguide coupled with a rectangle and a ring cavity. Numerical simulations results show that the sharp and asymmetric Fano-line shapes can be created in the waveguide. Fano resonance strongly depends on the structural parameters. This has important applications in highly sensitive and multiparameter sensing in the complicated environments.

Paper Details

Date Published: 17 September 2016
PDF: 7 pages
Proc. SPIE 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV, 99212F (17 September 2016); doi: 10.1117/12.2237138
Show Author Affiliations
Yundong Zhang, Harbin Institute of Technology (China)
Hui Li, Harbin Institute of Technology (China)
Yongfeng Wu, Harbin Institute of Technology (China)
Changqiu Yu, Harbin Institute of Technology (China)
Ping Yuan, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 9921:
Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV
Satoshi Kawata; Din Ping Tsai, Editor(s)

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