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Appl. Sci. 2018, 8(11), 2179; https://doi.org/10.3390/app8112179

Orbital Angular Momentum Multiplexed Free-Space Optical Communication Systems Based on Coded Modulation

Department of Electrical and Computer Engineering, University of Arizona, 1230 E. Speedway Blvd., Tucson, AZ 85721, USA
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Received: 22 October 2018 / Revised: 3 November 2018 / Accepted: 4 November 2018 / Published: 7 November 2018
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Abstract

In this paper, we experimentally investigate the turbulence mitigation methods in free-space optical communication systems based on orbital angular momentum (OAM) multiplexing. To study the outdoor atmospheric turbulence environment, we use an indoor turbulence emulator. Adaptive optics, channel coding, Huffman coding combined with low-density parity-check (LDPC) coding, and spatial offset are used for turbulence mitigation; while OAM multiplexing and wavelength-division multiplexing (WDM) are applied to boost channel capacity. View Full-Text
Keywords: free-space optical communications; orbital angular momentum; turbulence mitigation free-space optical communications; orbital angular momentum; turbulence mitigation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Qu, Z.; Djordjevic, I.B. Orbital Angular Momentum Multiplexed Free-Space Optical Communication Systems Based on Coded Modulation. Appl. Sci. 2018, 8, 2179.

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