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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 23 — Dec. 1, 2013
  • pp: 5118–5121

Reconfigurable switching of orbital-angular-momentum-based free-space data channels

Yang Yue, Hao Huang, Nisar Ahmed, Yan Yan, Yongxiong Ren, Guodong Xie, Dvora Rogawski, Moshe Tur, and Alan E. Willner  »View Author Affiliations


Optics Letters, Vol. 38, Issue 23, pp. 5118-5121 (2013)
http://dx.doi.org/10.1364/OL.38.005118


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Abstract

Light beams can carry orbital angular momentum (OAM) such that a helical phase front twists along the direction of propagation. OAM beams have been demonstrated in a wide variety of applications and have been found to offer a new orthogonal degree of freedom for multiplexing independent data streams for high-capacity point-to-point optical communications. However, to enable their efficient use in reconfigurable networks, approaches must be developed to manipulate OAM beams. We demonstrate OAM-based reconfigurable optical switching functions among multiple OAM beams. Selective data switching among three 100Gb/s quadrature phase-shift keying OAM channels was achieved with a 2.1 dB optical signal-to-noise ratio penalty. The scheme of selective OAM-beam manipulation can be potentially cascaded to realize an arbitrary n×n switching function.

© 2013 Optical Society of America

OCIS Codes
(060.4230) Fiber optics and optical communications : Multiplexing
(060.5060) Fiber optics and optical communications : Phase modulation
(060.2605) Fiber optics and optical communications : Free-space optical communication
(050.4865) Diffraction and gratings : Optical vortices
(250.6715) Optoelectronics : Switching

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 26, 2013
Revised Manuscript: September 23, 2013
Manuscript Accepted: October 25, 2013
Published: November 26, 2013

Citation
Yang Yue, Hao Huang, Nisar Ahmed, Yan Yan, Yongxiong Ren, Guodong Xie, Dvora Rogawski, Moshe Tur, and Alan E. Willner, "Reconfigurable switching of orbital-angular-momentum-based free-space data channels," Opt. Lett. 38, 5118-5121 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-23-5118


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