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High-Capacity Free-Space Optical Communications Between a Ground Transmitter and a Ground Receiver via a UAV Using Multiplexing of Multiple Orbital-Angular-Momentum Beams.
Li, Long; Zhang, Runzhou; Zhao, Zhe; Xie, Guodong; Liao, Peicheng; Pang, Kai; Song, Haoqian; Liu, Cong; Ren, Yongxiong; Labroille, Guillaume; Jian, Pu; Starodubov, Dmitry; Lynn, Brittany; Bock, Robert; Tur, Moshe; Willner, Alan E.
Afiliación
  • Li L; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA. longl@usc.edu.
  • Zhang R; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Zhao Z; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Xie G; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Liao P; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Pang K; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Song H; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Liu C; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Ren Y; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Labroille G; CAILabs Labs, Rennes, 35200, France.
  • Jian P; CAILabs Labs, Rennes, 35200, France.
  • Starodubov D; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA.
  • Lynn B; Space & Naval Warfare Systems Center, Pacific, San Diego, CA, 92152, USA.
  • Bock R; R-DEX Systems, Marietta, GA, 30068, USA.
  • Tur M; School of Electrical Engineering, Tel Aviv University, Ramat Aviv, 69978, Israel.
  • Willner AE; Department of Electrical Engineering, U. of Southern California, Los Angeles, CA, 90089, USA. willner@usc.edu.
Sci Rep ; 7(1): 17427, 2017 12 12.
Article en En | MEDLINE | ID: mdl-29234077
ABSTRACT
We explore the use of orbital-angular-momentum (OAM)-multiplexing to increase the capacity of free-space data transmission to moving platforms, with an added potential benefit of decreasing the probability of data intercept. Specifically, we experimentally demonstrate and characterize the performance of an OAM-multiplexed, free-space optical (FSO) communications link between a ground transmitter and a ground receiver via a moving unmanned-aerial-vehicle (UAV). We achieve a total capacity of 80 Gbit/s up to 100-m-roundtrip link by multiplexing 2 OAM beams, each carrying a 40-Gbit/s quadrature-phase-shift-keying (QPSK) signal. Moreover, we investigate for static, hovering, and moving conditions the effects of channel impairments, including misalignments, propeller-induced airflows, power loss, intermodal crosstalk, and system bit error rate (BER). We find the following (a) when the UAV hovers in the air, the power on the desired mode fluctuates by 2.1 dB, while the crosstalk to the other mode is -19 dB below the power on the desired mode; and (b) when the UAV moves in the air, the power fluctuation on the desired mode increases to 4.3 dB and the crosstalk to the other mode increases to -10 dB. Furthermore, the channel crosstalk decreases with an increase in OAM mode spacing.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos