Fano-type spectral asymmetry and its control for plasmonic metal-insulator-metal stub structures

Xianji Piao; Sunkyu Yu; Sukmo Koo; Kwanghee Lee; Namkyoo Park

doi:10.1364/OE.19.010907

Fano-type spectral asymmetry and its control for plasmonic metal-insulator-metal stub structures

Xianji Piao, Sunkyu Yu, Sukmo Koo, Kwanghee Lee, Namkyoo Park

School of Electrical and Computer Engineering

Seoul National University

Research output: Contribution to journal › Article › peer-review

102 Scopus citations

Abstract

We use coupled mode theory (CMT) to analyze a metal-insulator-metal (MIM) plasmonic stub structure, to reveal the existence of asymmetry in its transmittance spectra. Including the effect of the near field contribution for the stub structure, the observed asymmetry is interpreted as Fano-type interference between the quasi-continuum T-junction-resonator local-modes and discrete stub eigenmodes. Based on the asymmetry factor derived from the CMT analysis, methods to control transmittance asymmetry are also demonstrated.

Original language	English
Pages (from-to)	10907-10912
Number of pages	6
Journal	Optics Express
Volume	19
Issue number	11
DOIs	https://doi.org/10.1364/OE.19.010907
State	Published - 23 May 2011

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abstract = "We use coupled mode theory (CMT) to analyze a metal-insulator-metal (MIM) plasmonic stub structure, to reveal the existence of asymmetry in its transmittance spectra. Including the effect of the near field contribution for the stub structure, the observed asymmetry is interpreted as Fano-type interference between the quasi-continuum T-junction-resonator local-modes and discrete stub eigenmodes. Based on the asymmetry factor derived from the CMT analysis, methods to control transmittance asymmetry are also demonstrated.",

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AU - Piao, Xianji

AU - Yu, Sunkyu

AU - Koo, Sukmo

AU - Lee, Kwanghee

AU - Park, Namkyoo

PY - 2011/5/23

Y1 - 2011/5/23

N2 - We use coupled mode theory (CMT) to analyze a metal-insulator-metal (MIM) plasmonic stub structure, to reveal the existence of asymmetry in its transmittance spectra. Including the effect of the near field contribution for the stub structure, the observed asymmetry is interpreted as Fano-type interference between the quasi-continuum T-junction-resonator local-modes and discrete stub eigenmodes. Based on the asymmetry factor derived from the CMT analysis, methods to control transmittance asymmetry are also demonstrated.

AB - We use coupled mode theory (CMT) to analyze a metal-insulator-metal (MIM) plasmonic stub structure, to reveal the existence of asymmetry in its transmittance spectra. Including the effect of the near field contribution for the stub structure, the observed asymmetry is interpreted as Fano-type interference between the quasi-continuum T-junction-resonator local-modes and discrete stub eigenmodes. Based on the asymmetry factor derived from the CMT analysis, methods to control transmittance asymmetry are also demonstrated.

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JO - Optics Express

JF - Optics Express

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ER -

Fano-type spectral asymmetry and its control for plasmonic metal-insulator-metal stub structures

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