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Suppression of fluctuation on the angle of arrival for freespace optical communication

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【作者】 黎明林松李书明杨绍文

【Author】 LI Ming 1,2,3**,LIN Song 1,LI Shu-ming 1,and YANG Shao-wen 1 1.College of Educational Information &Technology,Hubei Normal University,Huangshi 435002,China 2.College of Physics & Electronic Information Engineering,Hubei Engineering University,Xiaogan 432000,China 3.School of Electronic Information,Wuhan University,Wuhan 430079,China

【机构】 College of Educational Information &Technology,Hubei Normal UniversityCollege of Physics & Electronic Information Engineering,Hubei Engineering UniversitySchool of Electronic Information,Wuhan University

【摘要】 In order to increase the coupling efficiency and suppress the random angular jitter induced by atmosphere turbulent,the fine tracking system with fast steering mirror(FSM) is demonstrated.The field experiment results of free-space optical communication link across 16 km show that when there is no tracking,the range of the x-axis coordinates’ fluctuation achieves 46 pixels,corresponding to the incident angle of 73.6 μrad,and its mean square deviation is 6.5 pixels,corresponding to the incident angle of 10.4 μrad.When there is tracking,the range of fluctuation is suppressed to 10 pixels and 16 μrad,and the mean square deviation reduces to 1.5 pixels and 2.6 μrad for the spot’s centroid and the incident angle,respectively.Significantly,the coupling efficiency increases by 6 times,and the fluctuation of received light power decreases obviously.

【Abstract】 In order to increase the coupling efficiency and suppress the random angular jitter induced by atmosphere turbulent,the fine tracking system with fast steering mirror(FSM) is demonstrated.The field experiment results of free-space optical communication link across 16 km show that when there is no tracking,the range of the x-axis coordinates’ fluctuation achieves 46 pixels,corresponding to the incident angle of 73.6 μrad,and its mean square deviation is 6.5 pixels,corresponding to the incident angle of 10.4 μrad.When there is tracking,the range of fluctuation is suppressed to 10 pixels and 16 μrad,and the mean square deviation reduces to 1.5 pixels and 2.6 μrad for the spot’s centroid and the incident angle,respectively.Significantly,the coupling efficiency increases by 6 times,and the fluctuation of received light power decreases obviously.

【基金】 supported by the Hubei Provincial Department of Education Grant(Nos.CXY2009B032andD20102506)
  • 【文献出处】 Optoelectronics Letters ,光电子快报(英文版) , 编辑部邮箱 ,2012年04期
  • 【分类号】TN929.1
  • 【被引频次】4
  • 【下载频次】20
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