Large-Area Pseudospin and Valley Waveguide States in a Three-Layer Heterostructure System

Sijie Li, Menglin L.N. Chen, Ping Li

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Topological pseudospin- and valley-dependent edge states have been widely explored due to their inherent topological properties and easy implementations. Conventional methods create topological modes tightly confined at the interfaces, which hinders high-capacity energy transport and efficient interconnection with diverse devices. Here, we propose a tri-band three-layer heterostructure system supporting both large-area pseudospin- and valley-locked waveguide states. Both unidirectional excitation and backscattering-immune propagation have been demonstrated. Besides, the large-area waveguide states manifest tunable mode width, which can be potentially used for impedance matching with wave-guiding channels with different aperture widths. This work enlarges the photonic systems that could be utilized for multi-band multi-functionallarge-area-mode enabled topological devices.

Original languageEnglish
Title of host publication2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781733509657
DOIs
Publication statusPublished - Aug 2023
Event2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023 - Hangzhou, China
Duration: 15 Aug 202318 Aug 2023

Publication series

Name2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023

Conference

Conference2023 International Applied Computational Electromagnetics Society Symposium, ACES-China 2023
Country/TerritoryChina
CityHangzhou
Period15/08/2318/08/23

Keywords

  • impedance matching
  • large-area topological waveguide states
  • three-layer heterostructure

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Computational Mathematics
  • Instrumentation
  • Radiation

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