Fig. 1. Diagram of 100 km of Xi’an University of Technology wireless optical communication experimental link

Fig. 2. Photo of internal structure of wireless coherent optical communication

Fig. 3. Structure of adaptive optics research content

Fig. 4. Schematic diagram of adaptive optics system

Fig. 5. Structure diagram of adaptive optics system with wavefront

Fig. 6. Push-pull method driving the 10th driver (a) deformable mirror shape diagram (b) wavefront slope diagram

Fig. 7. Interaction matrices

Fig. 8. Schematic diagram of adaptive optics PID control algorithm

Fig. 9. Wavefront correction under different k_p parameters^[96]

Fig. 10. Wavefront correction under different k_i parameters^[96]

Fig. 11. Different convergence values δ corrected wavefront phase^[96]

Fig. 12. Different γ value corrected wavefront phase^[96]

Fig. 13. Different β corrected system wavefront phase^[96]

Fig. 14. PV curve of wavefront corrected by fuzzy control^[100]

Fig. 15. Adaptive optics wavefront prediction and correction

Fig. 16. Wavefrontless adaptive optics system

Fig. 17. Deformable mirror eigen mode corrected light intensity SR change curve^[107]

Fig. 18. Light spot by wavefront correction^[107]

Fig. 19. Wavefront correction based on SPGD algorithm^[114]

Fig. 20. Optimal optical fiber coupling correction curve after wavefrontless correction^[115]

Fig. 21. Intensity distribution of vortex beams before and after correction by phase recovery Gerchberg-Saxton algorithm^[117](a1)～(d1) no turbulence, (a2)～(d2) has turbulence, (a3)～(d3) correction

Fig. 22. Intensity distribution of single vortex beam corrected by phase difference method^[119](a1)～(c1) initial light intensity, (a2)～(c2) the light intensity at the focal plane, (a3)～(c3) intensity at defocus plane, (a4)～(c4) corrected light intensity

Fig. 23. Schematic diagram of LC-SLM wavefront correction in wireless coherent optical communication system^[120]

Fig. 24. Amplitude of immediate frequency signal before and after correction^[122]

Fig. 25. PV convergence curve of multi-corrector wavefront correction

Fig. 26. Wavefront phase of adaptive optics system based on TM and DM combination

Fig. 27. Voltage change while using simulated annealing algorithm^[127]

Fig. 28. Variation curve of coupling optical power with iteration times under different deviations^[128]

Fig. 29. Mode conversion results^[131]

Fig. 30. Schematic diagram of adaptive optics wavefront correction optical fiber coupling control system

Fig. 31. Effect of non-common optical path aberration on closed-loop coupling power and wavefront phase of adaptive optics

Fig. 32. Variation curve of fiber coupling power before and after adaptive optics wavefront correction

Fig. 33. Effect curve of wavefront correction on coupling efficiency at different distances