Mutual mode control of short- and long-range surface plasmons

A symmetric metal slab waveguide simultaneously supports two opposite types of propagation mode similar to a metal film: short-range surface plasmon (SRSP) like mode and long-range surface plasmon (LRSP) like mode. The strong field confinement of SRSP-like mode plays a crucial role for nano-optical...

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Bibliographic Details
Published inOptics express Vol. 21; no. 22; pp. 27402 - 27410
Main Authors Takahara, Junichi, Miyata, Masashi
Format Journal Article
LanguageEnglish
Published United States 04.11.2013
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Summary:A symmetric metal slab waveguide simultaneously supports two opposite types of propagation mode similar to a metal film: short-range surface plasmon (SRSP) like mode and long-range surface plasmon (LRSP) like mode. The strong field confinement of SRSP-like mode plays a crucial role for nano-optical integrated circuits in spite of short propagation length. In order to avoid the trade-off between field confinement and propagation length, we demonstrate selective mode excitation and mutual mode conversion for nanofocusing mediated by LRSP-like mode.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.21.027402