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Transmittance and surface intensity in 3D composite plasmonic waveguides

Transmittance and surface intensity in 3D composite plasmonic waveguides
Transmittance and surface intensity in 3D composite plasmonic waveguides
A detailed theoretical study of composite plasmonic waveguide structures is reported. Expressions for modal expansion coefficients, optical transmittance and surface intensity are presented and used to describe the behavior of dielectric channel waveguides containing a short gold-coated section. The superstrate refractive index is shown to control modal beating and modal attenuation in the gold-coated region leading to distinctive features in the surface intensity and device transmittance. The model presented allows detailed prediction of device performance, enabling improved design of highly sensitive miniature devices for evanescent refractometry and vibrational spectroscopy, and can be extended to the design and optimization of composite waveguides structures with nano-patterned overlayers.
1094-4087
14407-14423
Karabchevsky, Alina
26a2c158-ef26-43be-8f10-b37e04baa017
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Karabchevsky, Alina
26a2c158-ef26-43be-8f10-b37e04baa017
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701

Karabchevsky, Alina, Wilkinson, James S. and Zervas, Michalis N. (2015) Transmittance and surface intensity in 3D composite plasmonic waveguides. Optics Express, 23 (11), 14407-14423. (doi:10.1364/OE.23.014407).

Record type: Article

Abstract

A detailed theoretical study of composite plasmonic waveguide structures is reported. Expressions for modal expansion coefficients, optical transmittance and surface intensity are presented and used to describe the behavior of dielectric channel waveguides containing a short gold-coated section. The superstrate refractive index is shown to control modal beating and modal attenuation in the gold-coated region leading to distinctive features in the surface intensity and device transmittance. The model presented allows detailed prediction of device performance, enabling improved design of highly sensitive miniature devices for evanescent refractometry and vibrational spectroscopy, and can be extended to the design and optimization of composite waveguides structures with nano-patterned overlayers.

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More information

Accepted/In Press date: 16 May 2015
e-pub ahead of print date: 22 May 2015
Published date: 1 June 2015
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 378413
URI: https://eprints.soton.ac.uk/id/eprint/378413
ISSN: 1094-4087
PURE UUID: 2581c954-43df-48bf-a729-d14c50ed15a7
ORCID for James S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697
ORCID for Michalis N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059

Catalogue record

Date deposited: 29 Jun 2015 14:03
Last modified: 19 Nov 2019 02:04

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