Abstract

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.

© 2022 Optica Publishing Group

Higher-order topological states in two-dimensional Stampfli-Triangle photonic crystals

Yuchen Peng, Exian Liu, Bei Yan, Jianlan Xie, Aoqian Shi, Peng Peng, Hang Li, and Jianjun Liu
Opt. Lett. 47(12) 3011-3014 (2022)

Pseudo-spin-valley coupled topological states protected by different symmetries in photonic crystals

Bei Yan, Yuchen Peng, Aoqian Shi, Jianlan Xie, Peng Peng, and Jianjun Liu
Opt. Lett. 47(8) 2044-2047 (2022)

Multiband topological states in non-Hermitian photonic crystals

Jiapei Jiang, Bei Yan, Yuchen Peng, Jianlan Xie, Aoqian Shi, and Jianjun Liu
Opt. Lett. 47(2) 437-440 (2022)

Dual-band topological rainbows in Penrose-triangle photonic crystals

Qingxi Xu, Yuchen Peng, Aoqian Shi, Peng Peng, and Jianjun Liu
J. Opt. Soc. Am. A 41(3) 366-370 (2024)

Chiral photonic topological states in Penrose quasicrystals

Yingfang Zhang, Zhihao Lan, Liyazhou Hu, Yiqing Shu, Xun Yuan, Penglai Guo, Xiaoling Peng, Weicheng Chen, and Jianqing Li
Opt. Lett. 48(9) 2229-2232 (2023)