100 Tbit/s free-space data link enabled by three-dimensional multiplexing of orbital angular momentum, polarization, and wavelength
Hao Huang(University of Southern California), Guodong Xie(University of Southern California), Yan Yan(University of Southern California), Nisar Ahmed(University of Southern California), Yongxiong Ren(University of Southern California), Yang Yue(University of Southern California), Dvora Rogawski(University of Southern California), Moshe J. Willner(University of Southern California), Baris I. Erkmen(Jet Propulsion Laboratory), Kevin Birnbaum(Jet Propulsion Laboratory), S. Dolinar(Jet Propulsion Laboratory), Martin P. J. Lavery(University of Glasgow), Miles J. Padgett(University of Glasgow), Moshe Tur(Tel Aviv University), Alan E. Willner(University of Southern California)
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Abstract
We investigate the orthogonality of orbital angular momentum (OAM) with other multiplexing domains and present a free-space data link that uniquely combines OAM-, polarization-, and wavelength-division multiplexing. Specifically, we demonstrate the multiplexing/demultiplexing of 1008 data channels carried on 12 OAM beams, 2 polarizations, and 42 wavelengths. Each channel is encoded with 100 Gbit/s quadrature phase-shift keying data, providing an aggregate capacity of 100.8 Tbit/s (12×2×42×100 Gbit/s).
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