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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 28, Iss. 1 — Jan. 1, 2011
  • pp: 61–65

Efficient generation and control of different-order orbital angular momentum states for communication links

Sergei Slussarenko, Ebrahim Karimi, Bruno Piccirillo, Lorenzo Marrucci, and Enrico Santamato  »View Author Affiliations


JOSA A, Vol. 28, Issue 1, pp. 61-65 (2011)
http://dx.doi.org/10.1364/JOSAA.28.000061


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Abstract

We present an optical scheme to encode and decode 2 bits of information into different orbital angular momentum (OAM) states of a paraxial optical beam. Our device generates the four light angular momentum states of order ± 2 and ± 4 by spin-to-orbital angular momentum conversion in a triangular optical loop arrangement. The switching among the four OAM states is obtained by changing the polarization state of the circulating beam by two quarter-wave plates, and the 2 bit information is transferred to the beam OAM exploiting a single q plate. The polarization of the exit beam is left free for an additional 1 bit of information. The switching among the different OAM states can be as fast as a few nanoseconds, if suitable electro-optical cells are used. This may be particularly useful in communication systems based on light OAM.

© 2010 Optical Society of America

OCIS Codes
(050.4865) Diffraction and gratings : Optical vortices
(260.6042) Physical optics : Singular optics
(230.3750) Optical devices : Optical logic devices

ToC Category:
Optical Devices

History
Original Manuscript: July 9, 2010
Revised Manuscript: November 12, 2010
Manuscript Accepted: November 19, 2010
Published: December 27, 2010

Citation
Sergei Slussarenko, Ebrahim Karimi, Bruno Piccirillo, Lorenzo Marrucci, and Enrico Santamato, "Efficient generation and control of different-order orbital angular momentum states for communication links," J. Opt. Soc. Am. A 28, 61-65 (2011)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-1-61

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