articleScienceOct 19, 2012GREEN OA

Integrated Compact Optical Vortex Beam Emitters

XCXinlun CaiJWJianwei WangMJMichael J. StrainBJBenjamin Johnson-MorrisJZJiangbo Zhu

University of Bristol · University of Glasgow · +2 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Emerging applications based on optical beams carrying orbital angular momentum (OAM) will probably require photonic integrated devices and circuits for miniaturization, improved performance, and enhanced functionality. We demonstrate silicon-integrated optical vortex emitters, using angular gratings to extract light confined in whispering gallery modes with high OAM into free-space beams with well-controlled amounts of OAM. The smallest device has a radius of 3.9 micrometers. Experimental characterization confirms the theoretical prediction that the emitted beams carry exactly defined and adjustable OAM. Fabrication of integrated arrays and demonstration of simultaneous emission of multiple identical optical…

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Authors

9

Topics & keywords

Topics
Keywords
  • Miniaturization
  • Angular momentum
  • Optical vortex
  • Optics
  • Vortex
  • Photonics
  • Photonic integrated circuit
  • Optoelectronics
UN Sustainable Development Goals
  • Affordable and clean energy
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