Integrated optical vortex beam receivers

Kenan Cicek, Ziyang Hu, Jiangbo Zhu*, Laura Meriggi, Shimao Li, Zhichao Nong, Shengqian Gao, Ning Zhang, Xuyang Wang, Xinlun Cai, Marc Sorel, Siyuan Yu

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

9 Citations (Scopus)
309 Downloads (Pure)

Abstract

A simple and ultra-compact integrated optical vortex beam receiver device is presented. The device is based on the coupling between the optical vortex modes and whispering gallery modes in a micro-ring resonator via embedded angular gratings, which provides the selective reception of optical vortex modes with definitive total angular momentum (summation of spin and orbital angular momentum) through the phase matching condition in the coupling process. Experimental characterization confirms the correct detection of the total angular momentum carried by the vortex beams incident on the device. In addition, photonic spin-controlled unidirectional excitation of whispering-gallery modes in the ring receiver is also observed, and utilized to differentiate between left- and right-circular polarizations and therefore unambiguously identify the orbital angular momentum of incident light. Such characteristics provide an effective mode-selective receiver for the eigen-modes in orbital angular momentum fiber transmission where the circularly polarized OAM modes can be used as data communications channels in multiplexed communications or as photonic states in quantum information applications.

Original languageEnglish
Pages (from-to)28529-28539
Number of pages11
JournalOptics Express
Volume24
Issue number25
Early online date12 Dec 2016
DOIs
Publication statusPublished - Dec 2016

Keywords

  • Diffraction gratings
  • Optical vortices
  • Integrated optics devices
  • Polarization-selective devices

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