Ultrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguides
Graphene plasmonics provides a unique and excellent platform for nonlinear all-optical switching, owing to its high nonlinear conductivity and tight optical confinement. In this paper, we show that impressive switching performance on graphene plasmonic waveguides could be obtained for both phase and...
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doaj-8f79ee85318b4ee2aa4db1ae9cf4bf0c2020-11-24T21:40:37ZengAIP Publishing LLCAPL Photonics2378-09672016-07-0114046101046101-1010.1063/1.4948417002602APPUltrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguidesKelvin J. A. Ooi0J. L. Cheng1J. E. Sipe2L. K. Ang3Dawn T. H. Tan4SUTD-MIT International Design Center, Singapore University of Technology and Design, 8 Somapah Road, 487372 SingaporeBrussels Photonics Team (B-PHOT), Department of Applied Physics and Photonics (IR-TONA), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, BelgiumDepartment of Physics and Institute for Optical Sciences, University of Toronto, 60 St. George Street, Toronto, Ontario M5S 1A7, CanadaSUTD-MIT International Design Center, Singapore University of Technology and Design, 8 Somapah Road, 487372 SingaporeSUTD-MIT International Design Center, Singapore University of Technology and Design, 8 Somapah Road, 487372 SingaporeGraphene plasmonics provides a unique and excellent platform for nonlinear all-optical switching, owing to its high nonlinear conductivity and tight optical confinement. In this paper, we show that impressive switching performance on graphene plasmonic waveguides could be obtained for both phase and extinction modulations at sub-MW/cm2 optical pump intensities. Additionally, we find that the large surface-induced nonlinearity enhancement that comes from the tight confinement effect can potentially drive the propagating plasmon pump power down to the pW range. The graphene plasmonic waveguides have highly configurable Fermi-levels through electrostatic-gating, allowing for versatility in device design and a broadband optical response. The high capabilities of nonlinear graphene plasmonics would eventually pave the way for the adoption of the graphene plasmonics platform in future all-optical nanocircuitry.http://dx.doi.org/10.1063/1.4948417 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kelvin J. A. Ooi J. L. Cheng J. E. Sipe L. K. Ang Dawn T. H. Tan |
spellingShingle |
Kelvin J. A. Ooi J. L. Cheng J. E. Sipe L. K. Ang Dawn T. H. Tan Ultrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguides APL Photonics |
author_facet |
Kelvin J. A. Ooi J. L. Cheng J. E. Sipe L. K. Ang Dawn T. H. Tan |
author_sort |
Kelvin J. A. Ooi |
title |
Ultrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguides |
title_short |
Ultrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguides |
title_full |
Ultrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguides |
title_fullStr |
Ultrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguides |
title_full_unstemmed |
Ultrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguides |
title_sort |
ultrafast, broadband, and configurable midinfrared all-optical switching in nonlinear graphene plasmonic waveguides |
publisher |
AIP Publishing LLC |
series |
APL Photonics |
issn |
2378-0967 |
publishDate |
2016-07-01 |
description |
Graphene plasmonics provides a unique and excellent platform for nonlinear all-optical switching, owing to its high nonlinear conductivity and tight optical confinement. In this paper, we show that impressive switching performance on graphene plasmonic waveguides could be obtained for both phase and extinction modulations at sub-MW/cm2 optical pump intensities. Additionally, we find that the large surface-induced nonlinearity enhancement that comes from the tight confinement effect can potentially drive the propagating plasmon pump power down to the pW range. The graphene plasmonic waveguides have highly configurable Fermi-levels through electrostatic-gating, allowing for versatility in device design and a broadband optical response. The high capabilities of nonlinear graphene plasmonics would eventually pave the way for the adoption of the graphene plasmonics platform in future all-optical nanocircuitry. |
url |
http://dx.doi.org/10.1063/1.4948417 |
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