eprintid: 10043653
rev_number: 20
eprint_status: archive
userid: 608
dir: disk0/10/04/36/53
datestamp: 2018-02-20 13:23:59
lastmod: 2021-11-05 23:54:14
status_changed: 2018-02-20 13:23:59
type: article
metadata_visibility: show
creators_name: Deng, H
creators_name: Chen, Y
creators_name: Panoiu, NC
creators_name: Malomed, BA
creators_name: Ye, F
title: Surface modes in plasmonic Bragg fibers with negative average permittivity
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
keywords: Surface plasmons; Surface dynamics; Subwavelength structures,
nanostructures; Nanophotonics and photonic crystals
note: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: We investigate surface modes in plasmonic Bragg fibers composed of nanostructured coaxial cylindrical metal-dielectric multilayers. We demonstrate that the existence of surface modes is determined by the sign of the spatially averaged permittivity of the plasmonic Bragg fiber, ε. Specifically, localized surface modes occur at the interface between the cylindrical core with ε < 0 and the outermost uniform dielectric medium, which is similar to the topologically protected plasmonic surface modes at the interface between two di erent one-dimensional planar metal-dielectric lattices with opposite signs of the averaged permittivity. Moreover, when increasing the number of dielectric-metal rings, the propagation constant of surface modes with di erent azimuthal mode numbers is approaching that of surface plasmon polaritons formed at the corresponding planar metal/dielectric interface. Robustness of such surface modes of plasmonic Bragg fibers is demonstrated as well.
date: 2018-02-05
date_type: published
official_url: http://doi.org/10.1364/OE.26.002559
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1535419
doi: 10.1364/OE.26.002559
lyricists_name: Panoiu, Nicolae-Coriolan
lyricists_id: NPANO59
actors_name: Panoiu, Nicolae-Coriolan
actors_id: NPANO59
actors_role: owner
full_text_status: public
publication: Optics Express
volume: 26
number: 3
pagerange: 2559-2568
issn: 1094-4087
citation:        Deng, H;    Chen, Y;    Panoiu, NC;    Malomed, BA;    Ye, F;      (2018)    Surface modes in plasmonic Bragg fibers with negative average permittivity.                   Optics Express , 26  (3)   pp. 2559-2568.    10.1364/OE.26.002559 <https://doi.org/10.1364/OE.26.002559>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10043653/1/PlasmonicBraggfiber_final.pdf