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Integrated nano-plasmonics: reflecting a waveguide mode with a single nano-antenna

Integrated nano-plasmonics: reflecting a waveguide mode with a single nano-antenna
Integrated nano-plasmonics: reflecting a waveguide mode with a single nano-antenna
Integrated plasmonic systems have the potential to revolutionise telecom devices [1]. However, the large losses and poor efficiency of plasmonic systems [2] have limited the use of metallic systems as optical circuits. Here we present a hybrid silicon-metallic system in which a single nano-antenna embedded in a single-mode silicon waveguide acts as a tuneable and narrow-band switch. Nanoantennas interact very strongly with light [3], such that when the nano-antenna is at resonance with the waveguide mode up to 80% of the light is blocked by it. This drop in transmission is a consequence of scattering and interference between the dipole and the waveguide mode, which is efficient over the nano-rod resonance bandwidth. The high performance and simplicity of this hybrid device holds great promise for future optoelectronic circuits.
Castro-Lopez, Marta
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Roque, Pablo de
e8a21ab6-a9dc-44f8-bacc-914a4cf72cc3
Gardes, F.Y.
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Sapienza, Riccardo
a2e0cf6c-1f22-4a5a-87a2-ffab0e24e6ac
Castro-Lopez, Marta
af48cf53-b65a-4bf7-91ec-dbbd96d6c6ae
Roque, Pablo de
e8a21ab6-a9dc-44f8-bacc-914a4cf72cc3
Gardes, F.Y.
7a49fc6d-dade-4099-b016-c60737cb5bb2
Sapienza, Riccardo
a2e0cf6c-1f22-4a5a-87a2-ffab0e24e6ac

Castro-Lopez, Marta, Roque, Pablo de, Gardes, F.Y. and Sapienza, Riccardo (2014) Integrated nano-plasmonics: reflecting a waveguide mode with a single nano-antenna. Plasmonica 2014, Italy. 30 Jun - 02 Jul 2014.

Record type: Conference or Workshop Item (Paper)

Abstract

Integrated plasmonic systems have the potential to revolutionise telecom devices [1]. However, the large losses and poor efficiency of plasmonic systems [2] have limited the use of metallic systems as optical circuits. Here we present a hybrid silicon-metallic system in which a single nano-antenna embedded in a single-mode silicon waveguide acts as a tuneable and narrow-band switch. Nanoantennas interact very strongly with light [3], such that when the nano-antenna is at resonance with the waveguide mode up to 80% of the light is blocked by it. This drop in transmission is a consequence of scattering and interference between the dipole and the waveguide mode, which is efficient over the nano-rod resonance bandwidth. The high performance and simplicity of this hybrid device holds great promise for future optoelectronic circuits.

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e-pub ahead of print date: 2014
Venue - Dates: Plasmonica 2014, Italy, 2014-06-30 - 2014-07-02
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 367995
URI: https://eprints.soton.ac.uk/id/eprint/367995
PURE UUID: 75ea98b3-85d2-4a11-9273-e77cca15a92a

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Date deposited: 12 Aug 2014 15:08
Last modified: 19 Mar 2019 17:30

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Contributors

Author: Marta Castro-Lopez
Author: Pablo de Roque
Author: F.Y. Gardes

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