Comparison of swarm intelligence algorithms in atmospheric compensation for free space optical communication

We use conventional adaptive optical system to compensate atmospheric turbulence in free space optical (FSO) communication system under strong scintillation circumstances, undesired wave-front measurements based on Shark-Hartman sensor (SH). Since wavefront sensor-less adaptive optics is a feasible option, we propose several swarm intelligence algorithms to compensate the wavefront aberration from atmospheric interference in FSO and mainly discuss the algorithm principle, basic flows, and simulation result. The numerical simulation experiment and result analysis show that compared with SPGD algorithm, the proposed algorithms can effectively restrain wavefront aberration, and improve convergence rate of the algorithms and the coupling efficiency of receiver in large extent.

[1]  L. Rusch,et al.  Suppression of Turbulence-Induced Scintillation in Free-Space Optical Communication Systems Using Saturated Optical Amplifiers , 2006, Journal of Lightwave Technology.

[2]  Xuefen Chi,et al.  Fiber coupling efficiency analysis of free space optical communication systems with holographic modal wave-front sensor , 2014 .

[3]  Zhaokun Li,et al.  Combinational-deformable-mirror adaptive optics system for atmospheric compensation in free space communication , 2014 .

[4]  J. Cho,et al.  4 x 10 Gb/s terrestrial optical free space transmission over 1.2 km using an EDFA preamplifier with 100 GHz channel spacing. , 2000, Optics express.

[5]  Mikhail A Vorontsov,et al.  Atmospheric compensation with a speckle beacon in strong scintillation conditions: directed energy and laser communication applications. , 2005, Applied optics.

[6]  Wei Liu,et al.  A novel method of camera pose estimation by parabolic motion , 2013 .

[7]  Enrico Fedrigo,et al.  High performance adaptive optics system with fine tip/tilt control , 2009 .

[8]  Wei Liu,et al.  Bit error rate analysis with real-time pointing errors correction in free space optical communication systems , 2014 .

[9]  Jens Schwarz,et al.  Low order adaptive optics on Z-Beamlet using a single actuator deformable mirror , 2006 .

[10]  Wei Liu,et al.  Free space optical communication performance analysis with focal plane based wavefront measurement , 2013 .

[11]  Mikhail A Vorontsov,et al.  Decoupled stochastic parallel gradient descent optimization for adaptive optics: integrated approach for wave-front sensor information fusion. , 2002, Journal of the Optical Society of America. A, Optics, image science, and vision.