Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Fano Resonance in the Plasmonic Structure of MIM Waveguide with r-Shaped Resonator for Refractive Index Sensor

Fano Resonance in the Plasmonic Structure of MIM Waveguide with r-Shaped Resonator for Refractive... A plasmonic structure of metal–insulator-metal (MIM) waveguide consisting of a baffle waveguide and an r-shaped resonator is designed to produce Fano resonances. The finite element method is used to analyze the transmission characteristics and magnetic field distributions of the plasmonic structure. The simulation results show that two Fano resonances can be achieved by the interference between a continuum state in the baffle waveguide and a discrete state in the r-shaped resonator. The Fano resonances can be tuned by changing the geometrical parameters of the plasmonic structure. The refractive index sensing is investigated and it is found that the sensitivity is strongly dependent on the geometrical parameters. The maximum sensitivity is 1333 nm/RIU, with the figure of merit of 5876. The results of the designed plasmonic structure offer high sensitivity and nano-scale integration, which are beneficial to nano-scale refractive index sensors, biosensors, and photonic devices. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plasmonics Springer Journals

Fano Resonance in the Plasmonic Structure of MIM Waveguide with r-Shaped Resonator for Refractive Index Sensor

Loading next page...
 
/lp/springer-journals/fano-resonance-in-the-plasmonic-structure-of-mim-waveguide-with-r-e8dTrTn0Ea

References (46)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022
ISSN
1557-1955
eISSN
1557-1963
DOI
10.1007/s11468-022-01655-2
Publisher site
See Article on Publisher Site

Abstract

A plasmonic structure of metal–insulator-metal (MIM) waveguide consisting of a baffle waveguide and an r-shaped resonator is designed to produce Fano resonances. The finite element method is used to analyze the transmission characteristics and magnetic field distributions of the plasmonic structure. The simulation results show that two Fano resonances can be achieved by the interference between a continuum state in the baffle waveguide and a discrete state in the r-shaped resonator. The Fano resonances can be tuned by changing the geometrical parameters of the plasmonic structure. The refractive index sensing is investigated and it is found that the sensitivity is strongly dependent on the geometrical parameters. The maximum sensitivity is 1333 nm/RIU, with the figure of merit of 5876. The results of the designed plasmonic structure offer high sensitivity and nano-scale integration, which are beneficial to nano-scale refractive index sensors, biosensors, and photonic devices.

Journal

PlasmonicsSpringer Journals

Published: Aug 1, 2022

Keywords: Surface plasmon polaritons; Fano resonance; r-shaped resonator; Refractive index sensor

There are no references for this article.