Multiband topological states in the Penrose-triangle photonic crystals

被引：26

作者：

Xu, Qingxi

Peng, Yuchen

Yan, Bei

Shi, Aoqian

Peng, Peng

Xie, Jianlan

Liu, Jianjun ^{[1
]}

机构：

[1] Hunan Univ, Sch Phys & Elect, Key Lab Micro Nano Optoelect Devices, Minist Educ, Changsha 410082, Peoples R China

来源：

OPTICS LETTERS | 2023年 / 48卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Edge state - Multi band - Penrose triangle - Performance - Photonic quasicrystal - Photonics devices - Propagation of lights - Quasi-periodic structures - Structural unit - Topological state;

D O I：

10.1364/OL.477077

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The topological edge state (TES) and topological corner state (TCS) in photonic crystals (PCs) provide effective ways to manipulate the propagation of light. To improve the performance and integration of topological photonic devices, the realization of multiband topological states by PCs combined with quasi-periodic structure needs to be urgently explored. In this Letter, a Penrose-triangle (P-T) PC, which arranges the basic structural unit of a 12-fold Penrose-type photonic quasi-crystal (PQC) in a triangular lattice, is proposed. The TES and TCS at low- and high-frequency bands can be generated in the same structure, accompanied by the realization of three groups of TCSs. This will provide a new structure for the generation of TESs and TCSs in PCs, and will provide a new way to improve the performance and integration of topological photonic devices. (c) 2022 Optica Publishing Group

引用

页码：101 / 104

页数：4

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