Adaptive optics techniques without a wave-front sensor based on guide laser in atmospheric laser communications

Xiaolin Wang; Xiaojun Xu; Pu Zhou; Haotong Ma; Zejin Liu

doi:10.1117/12.837951

20 November 2009 Adaptive optics techniques without a wave-front sensor based on guide laser in atmospheric laser communications

Xiaolin Wang, Xiaojun Xu, Pu Zhou, Haotong Ma, Zejin Liu

Author Affiliations +

Proceedings Volume 7511, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 75111M (2009) https://doi.org/10.1117/12.837951
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

In order to improve the performance of the intensity modulation with direct detection atmospheric laser communication system, adaptive optics technique without a wave-front sensor based on guide laser is proposed. Performance metric detector replaces the wave-front sensor in the adaptive optics, so that the invalidation of wave-front measurement and compensation in strong scintillation is avoided. The induced guide laser eliminates the misjudgment of attribute the intensity change caused by intensity modulation to the phase distortion. Numerical simulation based on SPGD algorithm shows that when the performance metric of the guide laser is increased from 0.09 to 0.67, the far-field Stehl ratio of carrier wave laser can be increased from 0.0028 to 0.6138, almost 220 times improvement, which indicates the adaptive optics system can reduce the bit-error and improve the performance of atmospheric laser communication greatly.

Citation Download Citation

Xiaolin Wang, Xiaojun Xu, Pu Zhou, Haotong Ma, and Zejin Liu "Adaptive optics techniques without a wave-front sensor based on guide laser in atmospheric laser communications", Proc. SPIE 7511, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 75111M (20 November 2009); https://doi.org/10.1117/12.837951

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