Xue, Y;
Ye, F;
Chen, X;
Mihalache, D;
Panoiu, NC;
(2014)
Plasmonic lattice solitons beyond the coupled-mode theory.
Laser and Photonics Reviews
, 8
(4)
L52-L57.
10.1002/lpor.201300202.
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Abstract
The existence and properties of plasmonic lattice solitons (PLSs) supported by periodic arrays of metallic nanowires embedded into a dielectric medium with Kerr nonlinearity are studied by solving the 3D Maxwell equations, and the conclusions are compared with the results predicted by a coupled-mode theory analysis. It is found that these two methods predict markedly different characteristics for the optical power of PLSs and its dependence on the separation distance between adjacent nanowires. In particular, the coupled-mode theory is found to be valid only when the distance between nanowires is larger than some characteristic length. The compensation of modal loss by a background optical gain is also studied and it is revealed that the gain coefficient required to balance the loss is much smaller than the loss parameter of the metallic components of the plasmonic array. © 2014 The Authors. Laser & Photonics Reviews published by Wiley-VCH Verlag GmbH & Co. KGaA Weinheim.
| Type: | Article |
|---|---|
| Title: | Plasmonic lattice solitons beyond the coupled-mode theory |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/lpor.201300202 |
| Publisher version: | http://dx.doi.org/10.1002/lpor.201300202 |
| Additional information: | © 2014 The Authors. Laser & Photonics Reviews published by Wiley-VCH Verlag GmbH & Co. KGaA Weinheim. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
| Keywords: | Surface plasmon polaritons; lattice solitons; coupled mode theory; |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1435859 |
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