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Tunability and Robustness of Dirac Points of Photonic Nanostructures

Deng, H; Chen, X; Malomed, BA; Panoiu, NC; Ye, F; (2016) Tunability and Robustness of Dirac Points of Photonic Nanostructures. IEEE Journal on Selected Topics in Quantum Electronics , 22 (5) , Article 5000509. 10.1109/JSTQE.2016.2521711. Green open access

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Abstract

We study the tunability and robustness of photonic Dirac points (DPs) in plasmonic nanostructures. The tunability of the DP is demonstrated in graphene-based photonic superlattices by adjusting the graphene permittivity via the optical Kerr effect or electrical doping. The robustness of DPs is demonstrated in plasmonic lattices by showing that even very high levels of disorder are unable to localize the modes located near the DP. The robustness of the DP also manifests itself in the fact that the inversely-proportional dependence of the transmission on the lattice length near the DP remains unchanged under strong disorder.

Type: Article
Title: Tunability and Robustness of Dirac Points of Photonic Nanostructures
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JSTQE.2016.2521711
Publisher version: http://dx.doi.org/10.1109/JSTQE.2016.2521711
Language: Dutch
Additional information: Copyright © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: Graphene, Lattices, Optical refraction, Optical superlattices, Permittivity, Photonics
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/1493617
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