Orbital angular momentum assisted spin-directional coupling

Zengkai Shao, Jiangbo Zhu, Yanfeng Zhang, Guoxuan Zhu, Zhuohui Yang, Yujie Chen, Siyuan Yu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Spin-directional coupling is associated with the quantum spin-Hall effect of photons, which has attracted much attention over the past few years. Here, we report orbital angular momentum (OAM) assisted spin-directional coupling and its reversal in a silicon nitride (SiN x ) photonic integrated circuit. SiN x microring resonators with angular grating have been designed and realized to emit high purity circularly polarized OAM beam. In addition, utilized as an OAM receiver, photonic spin-controlled unidirectional excitation of whispering-gallery modes in ring resonator is also observed, coupling the left-hand and right-hand circularly polarized OAM beam to different channel waveguide, respectively. Our results exemplify a very promising waveguide-based OAM device such as a robust OAM assisted spin-directional coupler and may open up many new capabilities in emerging applications of on-chip chiral photonics and quantum optics.

Original languageEnglish
Title of host publicationConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017
PublisherOSA - The Optical Society
ISBN (Print)9781509062904
Publication statusPublished - 1 Jan 2017
Externally publishedYes
EventConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 - Singapore, Singapore
Duration: 31 Jul 20174 Aug 2017

Publication series

NameOptics InfoBase Conference Papers
VolumePart F122-CLEOPR 2017


ConferenceConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017


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