Efficient generation and control of different order orbital angular momentum states for communication links
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Author(s)
Slussarenko, Sergei
Karimi, Ebrahim
Piccirillo, Bruno
Marrucci, Lorenzo
Santamato, Enrico
Griffith University Author(s)
Year published
2011
Metadata
Show full item recordAbstract
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 Რand ᴠby 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 ...
View more >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 Რand ᴠby 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.
View less >
View more >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 Რand ᴠby 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.
View less >
Journal Title
Journal of the Optical Society of America A
Volume
28
Issue
1
Copyright Statement
© 2011 OSA. This paper was published in Journal of the Optical Society of America A and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: dx.doi.org/10.1364/JOSAA.28.000061. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Subject
Atomic, molecular and optical physics
Photonics, optoelectronics and optical communications
Atomic, molecular and optical physics not elsewhere classified
Ophthalmology and optometry