Topological photonic crystal fibers and ring resonators

Abstract

We study photonic crystal fibers and ring resonators with topological features induced by Aubry- Andre-Harper modulations of the cladding. We find non trivial gaps and edge states at the interface between regions with different Chern numbers. We calculate the field profile and eigenvalue dispersion by an exact recursive approach. Compared with conventional circular resonators and fibers, the proposed structure features topological protection and hence robustness against symmetry-preserving local perturbations that do not close the gap. These topological photonic crystal fibers sustain strong field localization and energy concentration at a given radial distance. As topological light guiding and trapping devices, they may bring about many opportunities for both fundamentals and applications unachievable with conventional optical devices.

9 pages, 5 figures

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Cited by in corpus (6)

• Dirac-vortex topological photonic crystal fibre
• Topological supermodes in photonic crystal fiber
• Topological photonic crystal fibers based on second-order corner modes
• Hybrid topological guiding mechanisms for photonic crystal fibers
• Topological Frenkel Exciton-Polaritons in One-Dimensional Lattices of Strongly Coupled Cavities
• Topological photonic crystal fibre