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题名:
Experimental demonstration of single-mode fiber coupling using adaptive fiber coupler
作者: Luo Wen1,2,3; Geng Chao1,2; Wu Yun-Yun1,2,3; Tan Yi1,2,3; Luo Qi1,2,3; Liu Hong-Mei1,2,3; Li Xin-Yang1,2
刊名: CHINESE PHYSICS B
出版日期: 2014
卷号: 23, 期号:1
关键词: single-mode fiber coupling ; adaptive fiber coupler ; adaptive optics ; free-space optical communication
文章类型: Article
英文摘要: Coupling plane wave into a single-mode fiber (SMF) with high and steady coupling efficiency is crucial for fiber-based free-space laser systems, where random angular jitters are the main influencing factors of fiber coupling. In this paper, we verified a new adaptive-optic device named adaptive fiber coupler (AFC) which could compensate angular jitters and improve the SMF coupling efficiency in some degree. Experiments of SMF coupling under the angular jitter situation using AFC have been achieved. Stochastic parallel gradient descent (SPGD) algorithm is employed as the control strategy, of which the iteration rate is 625 Hz. In closed loop, the coupling efficiency keeps above 65% when angular errors are below 80 mu rad. The compensation bandwidth is 35 Hz at sine-jitter of 15 mu rad amplitude with average coupling efficiency of above 60%. Also, experiments with simulated turbulence have been studied. The average coupling efficiency increases from 31.97% in open loop to 61.33% in closed loop, and mean square error (MSE) of coupling efficiency drops from 7.43% to 1.75%.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
关键词[WOS]: SPACE OPTICAL COMMUNICATION ; RANDOM ANGULAR JITTER ; ATMOSPHERIC-TURBULENCE ; EFFICIENCY ; WAVE ; COLLIMATORS ; SYSTEMS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000331805400040
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2498
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Luo Wen,Geng Chao,Wu Yun-Yun,et al. Experimental demonstration of single-mode fiber coupling using adaptive fiber coupler[J]. CHINESE PHYSICS B,2014,23(1).
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