Please use this identifier to cite or link to this item: https://open.uns.ac.rs/handle/123456789/235
Title: High-Resolution Plasmonic Filter and Refractive Index Sensor Based on Perturbed Square Cavity with Slits and Orthogonal Feeding Scheme
Authors: Janković, Nikolina 
Cselyuszka, Norbert 
Issue Date: Aug-2018
Journal: Plasmonics
Abstract: © 2018, Springer Science+Business Media, LLC, part of Springer Nature. We present a plasmonic bandpass filter and refractive index sensor based on perturbed square cavity resonator with slits, which is fed by orthogonally oriented feeding waveguides. The slits provide size reduction in comparison to conventional square cavities and better coupling to the waveguides, while the perturbation and orthogonal feeding scheme provide a pair of transmission zeros in the response of the structure. In that manner, a bandpass filter with high transmission, narrow bandwidth, and excellent selectivity can be readily designed. Moreover, with a slight modification of the structure, a very sharp Fano-like response can be obtained and employed for refractive index sensing with high sensitivity and figure of merit.
URI: https://open.uns.ac.rs/handle/123456789/235
ISSN: 1557-1955
DOI: 10.1007/s11468-018-0834-z
Appears in Collections:IBS Publikacije/Publications

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