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Conference paper

Design of Photonic Topological Insulators Using Density Based Topology Optimization

By Christiansen, Rasmus E.^1,2; Wang, Fengwen^1,2; Sigmund, Ole^1,2; Stobbe, Søren³

From

Solid Mechanics, Department of Mechanical Engineering, Technical University of Denmark¹

Department of Mechanical Engineering, Technical University of Denmark²

Department of Photonics Engineering, Technical University of Denmark³

Abstract

We provide a novel photonic topological insulator design (PTI) exhibiting the quantum-spin-Hall effect, which, as opposed to previous designs, is conceived using numerical optimization of the transmission through PTI edge states. Specifically, we use topology optimization to maximize the transmission of light through a carefully configured model domain composed of two photonic crystal phases.

This leads to a numerically generated PTI, which features larger bandgaps than previously predicted for planar PTIs and excellent suppression of backscattering from sharp bends.

Language:	English
Year:	2019
Proceedings:	10th International Conference on Metamaterials, Photonic Crystals and Plasmonics
Types:	Conference paper
ORCIDs:	Christiansen, Rasmus E. , Wang, Fengwen , Sigmund, Ole and Stobbe, Søren

Design of Photonic Topological Insulators Using Density Based Topology Optimization

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Design of Photonic Topological Insulators Using Density Based Topology Optimization

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