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arXiv · 2105.07171

A topological photonic ring-resonator for on-chip channel filters

Linpeng Gu·Qingchen Yuan·Qiang Zhao·Yafei Ji·Ziyu Liu·Liang Fang·Xuetao Gan·Jianlin Zhao
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Abstract

A topologically protected ring-resonator formed in valley photonic crystals is proposed and fabricated on a silicon slab. The unidirectional transmission and robustness against structure defects of its resonant modes are illustrated. Coupled with topological waveguides, the topological ring is functioned as notch and channel-drop filters. The work opens up a new avenue for developing advanced chip-integrated photonic circuits with attributes of topological photonics.

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Linpeng Gu, Qingchen Yuan, Qiang Zhao, Yafei Ji, Ziyu Liu, Liang Fang, Xuetao Gan, Jianlin Zhao. 2021-05-15. A topological photonic ring-resonator for on-chip channel filters. https://doi.org/10.1109/jlt.2021.3082558

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