Bidirectional waveguide coupling with plasmonic Fano nanoantennas

Rui Guo; Manuel Decker; Isabelle Staude; Dragomir N. Neshev; Yuri S. Kivshar

doi:10.1063/1.4892651

Bidirectional waveguide coupling with plasmonic Fano nanoantennas

Rui Guo, Manuel Decker^*, Isabelle Staude, Dragomir N. Neshev, Yuri S. Kivshar

^*Corresponding author for this work

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

34 Citations (Scopus)

Abstract

We introduce the concept of a bidirectional, compact single-element Fano nanoantenna that allows for directional coupling of light in opposite directions of a high-index dielectric waveguide for two different operation wavelengths. We utilize a Fano resonance to tailor the radiation phases of a gold nanodisk and a nanoslit that is inscribed into the nanodisk to realize bidirectional scattering. We show that this Fano nanoantenna operates as a bidirectional waveguide coupler at telecommunication wavelengths and, thus, is ideally suitable for integrated wavelength-selective light demultiplexing.

Original language	English
Article number	053114
Journal	Applied Physics Letters
Volume	105
Issue number	5
DOIs	https://doi.org/10.1063/1.4892651
Publication status	Published - 4 Aug 2014

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abstract = "We introduce the concept of a bidirectional, compact single-element Fano nanoantenna that allows for directional coupling of light in opposite directions of a high-index dielectric waveguide for two different operation wavelengths. We utilize a Fano resonance to tailor the radiation phases of a gold nanodisk and a nanoslit that is inscribed into the nanodisk to realize bidirectional scattering. We show that this Fano nanoantenna operates as a bidirectional waveguide coupler at telecommunication wavelengths and, thus, is ideally suitable for integrated wavelength-selective light demultiplexing.",

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AU - Guo, Rui

AU - Decker, Manuel

AU - Staude, Isabelle

AU - Neshev, Dragomir N.

AU - Kivshar, Yuri S.

PY - 2014/8/4

Y1 - 2014/8/4

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AB - We introduce the concept of a bidirectional, compact single-element Fano nanoantenna that allows for directional coupling of light in opposite directions of a high-index dielectric waveguide for two different operation wavelengths. We utilize a Fano resonance to tailor the radiation phases of a gold nanodisk and a nanoslit that is inscribed into the nanodisk to realize bidirectional scattering. We show that this Fano nanoantenna operates as a bidirectional waveguide coupler at telecommunication wavelengths and, thus, is ideally suitable for integrated wavelength-selective light demultiplexing.

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U2 - 10.1063/1.4892651

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VL - 105

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 5

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ER -

Bidirectional waveguide coupling with plasmonic Fano nanoantennas

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