Topological membrane devices for terahertz on-chip photonics
Abstract
Terahertz waves offer a profound platform for next-generation sensing, imaging, and information communications. However, all conventional terahertz components and systems suffer from a bulky design, sensitivity to imperfections, and transmission losses. Here, 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. More specifically, we demonstrate the valley-locked asymmetric energy flow and mode conversion with topological straight waveguide, multi-port 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 bringing many novel features into terahertz devices.
Cite
@article{arxiv.2201.10750,
title = {Topological membrane devices for terahertz on-chip photonics},
author = {Quanlong Yang and Dongyang Wang and Sergey Kruk and Mingkai Liu and Ivan Kravchenko and Yuri Kivshar and Ilya Shadrivov},
journal= {arXiv preprint arXiv:2201.10750},
year = {2022}
}