Demonstration of a free-space optical communication system using a solar-pumped laser as signal transmitter

被引：38
|
作者：
Guan, Z. [1 ]
Zhao, C. M. [1 ]
Yang, S. H. [1 ]
Wang, Y. [1 ]
Ke, J. Y. [1 ]
Zhang, H. Y. [1 ]
机构：
[1] Beijing Inst Technol, Sch Opto Elect, Beijing 100081, Peoples R China
来源：
LASER PHYSICS LETTERS | 2017年 / 14卷 / 05期
基金：
中国国家自然科学基金;
关键词：
optical communication; solid-state lasers; solar energy; ND-YAG LASER; EFFICIENCY;
D O I：
10.1088/1612-202X/aa688a
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A free-space optical communication system with a sun light directly pumped laser as the signal transmitter was demonstrated. A 0.6 x 0.6 m Fresnel lens was used as the primary concentrator to collect the solar light. 6.8 W continuous wave laser power was obtained from a 4 mm diameter grooved Nd:YAG rod. The output intensity was modulated with a video signal via a LiNbO3 Mach-Zehnder optoelectronic modulator. The video signal with a resolution of 1920 * 1080/frame and the frame rate of 25 Hz was transmitted over five-meter free-space in real time with high fidelity. The transmission rate was 125 Mbps and bit error rate was lower than 10(-6). This research shows the feasibility of applying a solar light directly pumped laser for free-space optical communication, which is significant for telecommunications between satellites.
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页数：4
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