Topology-empowered membrane devices for terahertz photonics

Quanlong Yang*, Dongyang Wang, Sergey Kruk, Mingkai Liu, Ivan Kravchenko, Jiaguang Han, Yuri Kivshar, Ilya Shadrivov*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    Control of terahertz waves offers a profound platform for next-generation sensing, imaging, and information communications. However, all conventional terahertz components and systems suffer from bulky design, sensitivity to imperfections, and transmission loss. We propose and experimentally demonstrate on-chip integration and miniaturization of topological devices, which may address many existing drawbacks of the terahertz technology. We design and fabricate topological devices based on valley-Hall photonic structures that can be employed for various integrated components of on-chip terahertz systems. We demonstrate valley-locked asymmetric energy flow and mode conversion with topological waveguide, multiport couplers, wave division, and whispering gallery mode resonators. Our devices are based on topological membrane metasurfaces, which are of great importance for developing on-chip photonics and bring many features into terahertz technology.

    Original languageEnglish
    Article number046002
    JournalAdvanced Photonics
    Volume4
    Issue number4
    DOIs
    Publication statusPublished - 1 Jul 2022

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