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
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.
Topics & Concepts
ResonatorPhotonicsOptical filterRing (chemistry)Electronic engineeringOptical ring resonatorsChipPhotonic integrated circuitChannel (broadcasting)Silicon photonicsTopology (electrical circuits)OptoelectronicsPhysicsTelecommunicationsComputer scienceEngineeringElectrical engineeringChemistryOrganic chemistryPhotonic and Optical DevicesPhotonic Crystals and ApplicationsAdvanced Photonic Communication Systems