Real-time adaptive optics testbed to investigate point-ahead angle in pre-compensation of Earth-to-GEO optical communication

被引：28

作者：

Leonhard, Nina ^{[1
]}

Berlich, Rene ^{[1
,2
]}

Minardi, Stefano ^{[2
]}

Barth, Alexander ^{[3
]}

Mauch, Steffen ^{[4
]}

Mocci, Jacopo ^{[5
]}

Goy, Matthias ^{[1
,2
]}

Appelfelder, Michael ^{[1
]}

Beckert, Erik ^{[1
]}

Reinlein, Claudia ^{[1
]}

机构：

[1] Fraunhofer Inst Appl Opt & Precis Engn, Albert Einstein Str 7, D-07745 Jena, Germany

[2] Univ Jena, Inst Appl Phys, Albert Einstein Str 15, D-07745 Jena, Germany

[3] Tech Univ Ilmenau, Control Engn Grp, POB 10 05 65, D-98684 Ilmenau, Germany

[4] Ingenieurburo Steffen Mauch, Humboldtstr 18, D-88605 Messkirch, Germany

[5] Univ Verona, Dept Comp Sci, Str Grazie 15, I-37134 Verona, Italy

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 12期

关键词：

PROPAGATION; TURBULENCE; BEAMS;

D O I：

10.1364/OE.24.013157

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We explore adaptive optics (AO) pre-compensation for optical communication between Earth and geostationary (GEO) satellites in a laboratory experiment. Thus, we built a rapid control prototyping breadboard with an adjustable point-ahead angle where downlink and uplink can operate both at 1064 nm and 1550 nm wavelength. With our real-time system, beam wander resulting from artificial turbulence was reduced such that the beam hits the satellite at least 66% of the time as compared to merely 3% without correction. A seven-fold increase of the average Strehl ratio to (28 +/- 15) % at 18 mu rad point-ahead angle leads to a considerable reduction of the calculated fading probability. These results make AO pre-compensation a viable technique to enhance Earth-to-GEO optical communication. (C) 2016 Optical Society of America

引用

页码：13157 / 13172

页数：16

共 5 条

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[5] Low-cost high performance adaptive optics real-time controller in free space optical communication system
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