Plasmonic nanoantennas as integrated coherent perfect absorbers on SOI waveguides for modulators and all-optical switches
Plasmonic nanoantennas as integrated coherent perfect absorbers on SOI waveguides for modulators and all-optical switches
The performance of plasmonic nanoantenna structures on top of SOI wire waveguides as coherent perfect absorbers for modulators and all-optical switches is explored. The absorption, scattering, reflection and transmission spectra of gold and aluminum nanoantenna-loaded waveguides were calculated by means of 3D finite-difference time-domain simulations for single waves propagating along the waveguide, as well as for standing wave scenarios composed from two counterpropagating waves. The investigated configurations showed losses of roughly 1% and extinction ratios greater than 25 dB for modulator and switching applications, as well as plasmon effects such as strong field enhancement and localization in the nanoantenna region. The proposed plasmonic coherent perfect absorbers can be utilized for ultracompact all-optical switches in coherent networks as well as modulators and can find applications in sensing or in increasing nonlinear effects.
27652-27661
Bruck, Roman
6c0a8401-0a93-4497-bd42-665e5530cfcf
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
18 November 2013
Bruck, Roman
6c0a8401-0a93-4497-bd42-665e5530cfcf
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Bruck, Roman and Muskens, Otto L.
(2013)
Plasmonic nanoantennas as integrated coherent perfect absorbers on SOI waveguides for modulators and all-optical switches.
Optics Express, 21 (23), .
(doi:10.1364/OE.21.027652).
Abstract
The performance of plasmonic nanoantenna structures on top of SOI wire waveguides as coherent perfect absorbers for modulators and all-optical switches is explored. The absorption, scattering, reflection and transmission spectra of gold and aluminum nanoantenna-loaded waveguides were calculated by means of 3D finite-difference time-domain simulations for single waves propagating along the waveguide, as well as for standing wave scenarios composed from two counterpropagating waves. The investigated configurations showed losses of roughly 1% and extinction ratios greater than 25 dB for modulator and switching applications, as well as plasmon effects such as strong field enhancement and localization in the nanoantenna region. The proposed plasmonic coherent perfect absorbers can be utilized for ultracompact all-optical switches in coherent networks as well as modulators and can find applications in sensing or in increasing nonlinear effects.
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e-pub ahead of print date: 4 November 2013
Published date: 18 November 2013
Organisations:
Quantum, Light & Matter Group
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Local EPrints ID: 360070
URI: http://eprints.soton.ac.uk/id/eprint/360070
ISSN: 1094-4087
PURE UUID: 9e4c934c-1616-4976-8478-c0b350b92b96
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Date deposited: 25 Nov 2013 12:20
Last modified: 15 Mar 2024 03:34
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Roman Bruck
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