Oct. 2018

Article Contents

Chinese Optics> 2018> 11(5): 822-831.

XU Yi-yun, DONG Ke-yan, AN Yan, ZHU Tian-yuan, YAN Jia. Analysis of the influence of defocus on the field of view of laser communication reception[J]. Chinese Optics, 2018, 11(5): 822-831. doi: 10.3788/CO.20181105.0822

Citation:

XU Yi-yun, DONG Ke-yan, AN Yan, ZHU Tian-yuan, YAN Jia. Analysis of the influence of defocus on the field of view of laser communication reception[J].Chinese Optics, 2018, 11(5): 822-831.doi:10.3788/CO.20181105.0822

Citation:

XU Yi-yun, DONG Ke-yan, AN Yan, ZHU Tian-yuan, YAN Jia. Analysis of the influence of defocus on the field of view of laser communication reception[J].Chinese Optics, 2018, 11(5): 822-831.doi:10.3788/CO.20181105.0822

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Analysis of the influence of defocus on the field of view of laser communication reception

doi:10.3788/CO.20181105.0822

XU Yi-yun^{1, 2,},
DONG Ke-yan^2,,,
AN Yan^2,,
ZHU Tian-yuan³,
YAN Jia³

1.
Opto-Electronics Engineer Institute, Changchun University of Science and Technology, Changchun 130022, China
2.
National and Local Joint Engineering Research Center of Space Photoelectric Technology, Changchun University of Science and Technology, Changchun 130022, China
3.
Jilin Electric Power Co. Ltd, State Grid Corporation of China, Changchun 130000, China

Funds:

Jilin Province S & T Conversion project of China20160301005GX

Changchun Science and Technology Development Plan18DY016

More Information

Corresponding author:DONG Ke-yan, E-mail:dongkeyan@163.com
Received Date:03 Jan 2018
Rev Recd Date:02 Mar 2018
Publish Date:01 Oct 2018

Abstract

Abstract

A defocus method is proposed in this paper to increase the receiving field of view and reduce the difficulty of alignment in free space laser communication. Based on the minimum energy required for communication (-35 dBm), the relationship between detector receiving energy, receiving field of view (FOV), defocus receiving energy and defocusing amount is theoretically derived and simulated by Matlab. We analyses and compare the influence of defocused receiving energy and defocusing on the received field of view. The results show that when the defocusing amount is 0.5 mm, the defocus receiving energy is increased from -20.9 dBm to -4.1 dBm, the receiving FOV can be increased by 0.27 mrad. When the defocus receiving energy is -4.1 dBm, the defocus amount is increased from 0.2 mm to 1.0 mm, the FOV will be increased by 1.75 mrad. The comparison shows that increasing the defocus receiving energy and expanding the defocusing amount can increase the receiving field of view, and the effect of expanding the defocusing amount is relatively significant, which provides a theoretical guidance for the design of the subsequent defocusing system.
- laser communication,
- defocus,
- field of view,
- defocus receiving energy

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References (20)

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