Hybrid topological guiding mechanisms for photonic crystal fibers
File(s)
Published version
Author(s)
Makwana, Mehul
Wiltshaw, Richard
Guenneau, Sebastien
Craster, Richard
Type
Journal Article
Abstract
We create hybrid topological-photonic localisation of light by introducing concepts from the field of topological matter to that of photonic crystal fiber arrays. S-polarized obliquely propagating electromagnetic waves are guided by hexagonal, and square, lattice topological systems along an array of infinitely conducting fibers. The theory utilises perfectly periodic arrays that, in frequency space, have gapped Dirac cones producing band gaps demarcated by pronounced valleys locally imbued with a nonzero local topological quantity. These broken symmetry-induced stop-bands allow for localised guidance of electromagnetic edge-waves along the crystal fiber axis. Finite element simulations, complemented by asymptotic techniques, demonstrate the effectiveness of the proposed designs for localising energy in finite arrays in a robust manner.
Date Issued
2020-10-01
Date Acceptance
2020-09-02
Citation
Optics Express, 2020, 28 (21), pp.30871-30888
ISSN
1094-4087
Publisher
Optical Society of America (OSA)
Start Page
30871
End Page
30888
Journal / Book Title
Optics Express
Volume
28
Issue
21
Copyright Statement
© 2020 The Author(s). Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
License URL
Sponsor
UKRI
Engineering & Physical Science Research Council (E
Commission of the European Communities
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://arxiv.org/abs/2005.12421
Grant Number
EP/T002654/1
R100724-101, A/C 86440
863179
EP/L024926/1
Subjects
physics.optics
physics.optics
physics.app-ph
Optics
0205 Optical Physics
0906 Electrical and Electronic Engineering
1005 Communications Technologies
Publication Status
Published