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

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

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.

Original languageEnglish
Article number9439170
Pages (from-to)5069-5073
Number of pages5
JournalJournal of Lightwave Technology
Volume39
Issue number15
DOIs
StatePublished - 1 Aug 2021

Keywords

  • Topological photonics
  • filter
  • ring-resonator

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