Experimental Investigation of Light Intensity Distribution and Fluctuation Characteristics in Lanzhou Area

doi:10.3788/gzxb20174606.0601002

	Experimental Investigation of Light Intensity Distribution and Fluctuation Characteristics in Lanzhou Area
	Wang, Hui-Qin; Li, Yuan; Cao, Ming-Hua; Peng, Qing-Bin
刊名	Guangzi Xuebao/Acta Photonica Sinica
	2017-06-01
卷号	46 期号:6
关键词	Atmospheric optics Atmospheric turbulence Light Light polarization Normal distribution Rain Scintillation Laser transmission Light intensity distribution Light intensity fluctuations Probability density distribution Scintillation index
ISSN号	10044213
DOI	10.3788/gzxb20174606.0601002
英文摘要	A wireless optical link in length of 610 m is established in Lanzhou area to investigate the light intensity distribution and fluctuation characteristics of Gaussian laser under different weather conditions. The three-dimensional pseudo-color transform method is utilized to analyze the spatial distribution of light intensity. The results show that the intensity distribution of the main lobe within the light spot follows the Gaussian distribution. The steepness of light intensity distribution decreases and the attenuation of light intensity increases according to the order of sunny day, cloudy day and overcast day in turn. Moreover, the atmospheric scintillation index is analyzed by using the measured light intensity data. The results show scintillation index of sunny day, sunny day after rain and overcast day are 0.2254, 0.1892 and 0.1888, respectively. This indicates that the light intensity fluctuation in sunny day is higher than sunny day after rain and overcast day. The probability density distribution of light intensity is obtained by using nonlinear fitting of histograms of the normalized optical intensity data. They all conform to log-normal distribution. Especially, the probability density in sunny day is more consistent with log-normal distribution, the goodness of its fitted curve is up to 0.99750. © 2017, Science Press. All right reserved.
WOS研究方向	Optics
语种	中文
出版者	Chinese Optical Society
WOS记录号	WOS:000431675500002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114017]
专题	计算机与通信学院
作者单位	School of Computer & Communication, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, Hui-Qin,Li, Yuan,Cao, Ming-Hua,et al. Experimental Investigation of Light Intensity Distribution and Fluctuation Characteristics in Lanzhou Area[J]. Guangzi Xuebao/Acta Photonica Sinica,2017,46(6).
APA	Wang, Hui-Qin,Li, Yuan,Cao, Ming-Hua,&Peng, Qing-Bin.(2017).Experimental Investigation of Light Intensity Distribution and Fluctuation Characteristics in Lanzhou Area.Guangzi Xuebao/Acta Photonica Sinica,46(6).
MLA	Wang, Hui-Qin,et al."Experimental Investigation of Light Intensity Distribution and Fluctuation Characteristics in Lanzhou Area".Guangzi Xuebao/Acta Photonica Sinica 46.6(2017).