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 language | English |
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Article number | 9439170 |
Pages (from-to) | 5069-5073 |
Number of pages | 5 |
Journal | Journal of Lightwave Technology |
Volume | 39 |
Issue number | 15 |
DOIs | |
State | Published - 1 Aug 2021 |
Keywords
- Topological photonics
- filter
- ring-resonator