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题名:
Simulation study on fiber-coupling efficiency for quantum communication through atmospheric turbulence
作者: Long, Xuejun1,2; Qi, Bo1,2; Ren, Ge1,2; Wang, Sanhong3; Ma, Haotong1,2,4; Bian, Jiang1,2
出版日期: 2015
会议名称: Proceedings of SPIE: 20th International Symposium on High Power Systems and Applications 2014, HPLS and A 2014
会议日期: 2015
学科分类: Atmospheric thermodynamics - Atmospheric turbulence - Efficiency - Fibers - High power lasers - Laser beams - Mirrors - Quantum communication - Quantum cryptography
DOI: 10.1117/12.2065310
通讯作者: Long, Xuejun
中文摘要: Quantum communication is a high secure and high efficiency communication method. The received laser beam in the quantum communication system must be coupled into the fibers, by which the communication signal can be detected, amplified and processed for the latter devices. However, atmospheric turbulence will degrade the spatial coherence of the laser beam and limits the fiber- coupling efficiency. In the paper, the propagation model of the laser beam through atmospheric turbulence is established and the fiber-coupling efficiency for the laser beam distorted by atmospheric turbulence is evaluated, and the optimal coupling geometry parameter a=1.12 is given, with which the theoretical maximal coupling efficiency is reached. Then the relationship between the atmospheric coherence constant r0 and the fiber-coupling efficiency is analyzed. The simulation also indicates that the fast steering mirror (FSM) can reduce the influence of the atmospheric turbulence and improve the coupling efficiency distinctly. © 2015 SPIE.
英文摘要: Quantum communication is a high secure and high efficiency communication method. The received laser beam in the quantum communication system must be coupled into the fibers, by which the communication signal can be detected, amplified and processed for the latter devices. However, atmospheric turbulence will degrade the spatial coherence of the laser beam and limits the fiber- coupling efficiency. In the paper, the propagation model of the laser beam through atmospheric turbulence is established and the fiber-coupling efficiency for the laser beam distorted by atmospheric turbulence is evaluated, and the optimal coupling geometry parameter a=1.12 is given, with which the theoretical maximal coupling efficiency is reached. Then the relationship between the atmospheric coherence constant r0 and the fiber-coupling efficiency is analyzed. The simulation also indicates that the fast steering mirror (FSM) can reduce the influence of the atmospheric turbulence and improve the coupling efficiency distinctly. © 2015 SPIE.
收录类别: SCI ; Ei
语种: 英语
卷号: 9255
ISSN号: 0277-786X
文章类型: 会议论文
页码: 92553M
Citation statistics:
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/7435
Appears in Collections:光电工程总体研究室(一室)_会议论文

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作者单位: 1. Institute of Optics And Electronics, Chinese Academy of Sciences, Chengdu, China
2. Beam Control Laboratory, Chinese Academy of Sciences, Chengdu, China
3. Taiyuan Satellite Launch Center, Taiyuan, Shanxi, China
4. College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha, Hunan, China

Recommended Citation:
Long, Xuejun,Qi, Bo,Ren, Ge,et al. Simulation study on fiber-coupling efficiency for quantum communication through atmospheric turbulence[C]. 见:Proceedings of SPIE: 20th International Symposium on High Power Systems and Applications 2014, HPLS and A 2014. 2015.
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