Complete spectral gap in coupled dielectric waveguides embedded into metal

Wei Liu; Andrey A. Sukhorukov; Andrey E. Miroshnichenko; Chris G. Poulton; Zhiyong Xu; Dragomir N. Neshev; Yuri S. Kivshar

doi:10.1063/1.3458694

Complete spectral gap in coupled dielectric waveguides embedded into metal

Wei Liu^*, Andrey A. Sukhorukov, Andrey E. Miroshnichenko, Chris G. Poulton, Zhiyong Xu, Dragomir N. Neshev, Yuri S. Kivshar

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

We study a plasmonic coupler involving backward (TM01) and forward (HE11) modes of dielectric waveguides embedded into an infinite metallic background. The simultaneously achievable contradirectional energy flows and codirectional phase velocities in different channels lead to a spectral gap, despite the absence of periodic structures along the waveguide. We demonstrate that a complete spectral gap can be achieved in a symmetric structure composed of four coupled waveguides.

Original language	English
Article number	021106
Journal	Applied Physics Letters
Volume	97
Issue number	2
DOIs	https://doi.org/10.1063/1.3458694
Publication status	Published - 12 Jul 2010

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abstract = "We study a plasmonic coupler involving backward (TM01) and forward (HE11) modes of dielectric waveguides embedded into an infinite metallic background. The simultaneously achievable contradirectional energy flows and codirectional phase velocities in different channels lead to a spectral gap, despite the absence of periodic structures along the waveguide. We demonstrate that a complete spectral gap can be achieved in a symmetric structure composed of four coupled waveguides.",

author = "Wei Liu and Sukhorukov, {Andrey A.} and Miroshnichenko, {Andrey E.} and Poulton, {Chris G.} and Zhiyong Xu and Neshev, {Dragomir N.} and Kivshar, {Yuri S.}",

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AU - Liu, Wei

AU - Sukhorukov, Andrey A.

AU - Miroshnichenko, Andrey E.

AU - Poulton, Chris G.

AU - Xu, Zhiyong

AU - Neshev, Dragomir N.

AU - Kivshar, Yuri S.

PY - 2010/7/12

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N2 - We study a plasmonic coupler involving backward (TM01) and forward (HE11) modes of dielectric waveguides embedded into an infinite metallic background. The simultaneously achievable contradirectional energy flows and codirectional phase velocities in different channels lead to a spectral gap, despite the absence of periodic structures along the waveguide. We demonstrate that a complete spectral gap can be achieved in a symmetric structure composed of four coupled waveguides.

AB - We study a plasmonic coupler involving backward (TM01) and forward (HE11) modes of dielectric waveguides embedded into an infinite metallic background. The simultaneously achievable contradirectional energy flows and codirectional phase velocities in different channels lead to a spectral gap, despite the absence of periodic structures along the waveguide. We demonstrate that a complete spectral gap can be achieved in a symmetric structure composed of four coupled waveguides.

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U2 - 10.1063/1.3458694

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M3 - Article

SN - 0003-6951

VL - 97

JO - Applied Physics Letters

JF - Applied Physics Letters

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M1 - 021106

ER -

Complete spectral gap in coupled dielectric waveguides embedded into metal

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