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Performance analysis of an adaptive optics system for free-space optics communication through atmospheric turbulence
Wang, Y. K.; Xu, H. Y.; Li, D. Y.; Wang, R.; Jin, C. B.; Yin, X. H.; Gao, S. J.; Mu, Q. Q.; Xuan, L.; Cao, Z. L.
2018
发表期刊Scientific Reports
ISSN2045-2322
卷号8页码:11
摘要The performance of free-space optics communication (FSOC) is greatly degraded by atmospheric turbulence. Adaptive optics (AO) is an effective method for attenuating the influence. In this paper, the influence of the spatial and temporal characteristics of turbulence on the performance of AO in a FSOC system is investigated. Based on the Greenwood frequency (GF) and the ratio of receiver aperture diameter to atmospheric coherent length (D/r(0)), the relationship between FSOC performance (CE) and AO parameters (corrected Zernike modes number and bandwidth) is derived for the first time. Then, simulations and experiments are conducted to analyze the influence of AO parameters on FSOC performance under different GF and D/r(0). The simulation and experimental results show that, for common turbulence conditions, the number of corrected Zernike modes can be fixed at 35 and the bandwidth of the AO system should be larger than the GF. Measurements of the bit error rate (BER) for moderate turbulence conditions (D/r(0) = 10, f(G) = 60 Hz) show that when the bandwidth is two times that of GF, the average BER is decreased by two orders of magnitude compared with f(G)/f(3dB) = 1. These results and conclusions can provide important guidance in the design of an AO system for FSOC.
关键词compensation Science & Technology - Other Topics
DOI10.1038/s41598-018-19559-9
收录类别SCI
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文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/60765
专题中国科学院长春光学精密机械与物理研究所
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Wang, Y. K.,Xu, H. Y.,Li, D. Y.,et al. Performance analysis of an adaptive optics system for free-space optics communication through atmospheric turbulence[J]. Scientific Reports,2018,8:11.
APA Wang, Y. K..,Xu, H. Y..,Li, D. Y..,Wang, R..,Jin, C. B..,...&Cao, Z. L..(2018).Performance analysis of an adaptive optics system for free-space optics communication through atmospheric turbulence.Scientific Reports,8,11.
MLA Wang, Y. K.,et al."Performance analysis of an adaptive optics system for free-space optics communication through atmospheric turbulence".Scientific Reports 8(2018):11.
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