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arXiv · 2201.10750

Topological membrane devices for terahertz on-chip photonics

Quanlong Yang·Dongyang Wang·Sergey Kruk·Mingkai Liu·Ivan Kravchenko·Yuri Kivshar·Ilya Shadrivov
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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.

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Quanlong Yang, Dongyang Wang, Sergey Kruk, Mingkai Liu, Ivan Kravchenko, Yuri Kivshar, Ilya Shadrivov. 2022-01-26. Topological membrane devices for terahertz on-chip photonics. https://arxiv.org/abs/2201.10750

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