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Proceedings Paper

Plasmonic nanoantenna coherent absorption switches for integrated photonics
Author(s): Otto L. Muskens; Roman Bruck
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Paper Abstract

We investigate chains of plasmonic gold nano-antennas as coherent perfect absorbers on silicon waveguides by means of 3D finite-difference time-domain simulations. In such structures, absorption can be tuned to any percentage by manipulating the phase relation of two counterpropagating waves in the waveguide. Thus, they find applications as ultracompact all-optical switches and modulators in coherent networks. We show that the choice of the waveguide cross section has significant influence on the performance of individual nano-antennas. As a result, the length of the chain of antennas for perfect coherent absorption varies strongly with the waveguide cross section. We analyze the implications of this dependency on the fabrication process.

Paper Details

Date Published: 1 May 2015
PDF: 5 pages
Proc. SPIE 9516, Integrated Optics: Physics and Simulations II, 95160H (1 May 2015); doi: 10.1117/12.2182227
Show Author Affiliations
Otto L. Muskens, Univ. of Southampton (United Kingdom)
Roman Bruck, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 9516:
Integrated Optics: Physics and Simulations II
Pavel Cheben; Jiří Čtyroký; Iñigo Molina-Fernández, Editor(s)

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