We described recent progress on optical communications using light beams carrying orbital angular momentum (OAM). We achieved a 25.6-bit/s/Hz spectral efficiency using 16-QAM signals over pol-muxed four OAM beams.
© 2012 OSA
A. Willner and J. Wang, "Optical Communications Using Light Beams Carrying Orbital Angular Momentum," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (online) (Optical Society of America, 2012), paper JTu2K.1.
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