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Simulation study on fiber-coupling efficiency for quantum communication through atmospheric turbulence
Long, Xuejun1,2; Qi, Bo1,2; Ren, Ge1,2; Wang, Sanhong3; Ma, Haotong1,2,4; Bian, Jiang1,2
Volume9255
Pages92553M
2015
Language英语
ISSN0277-786X
DOI10.1117/12.2065310
Indexed BySCI ; Ei
Subtype会议论文
AbstractQuantum 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.; 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.
Conference NameProceedings of SPIE: 20th International Symposium on High Power Systems and Applications 2014, HPLS and A 2014
Conference Date2015
Citation statistics
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7435
Collection光电工程总体研究室(一室)
Corresponding AuthorLong, Xuejun
Affiliation1. 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
GB/T 7714
Long, Xuejun,Qi, Bo,Ren, Ge,et al. Simulation study on fiber-coupling efficiency for quantum communication through atmospheric turbulence[C],2015:92553M.
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