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可用于深空信息传输的光纤激光相控阵技术
王天枢1,2,3, 孙鸿伟1,2,3, 韩建1,2,3, 张鹏1,2,3, 胡源1,2,3, 张立中1,2,3, 刘京郊4, 姜会林1,2,3
1.空间光电技术国家地方联合工程研究中心, 长春 130022;2.长春理工大学 光电测控与光信息传输技术教育部重点实验室, 长春 130022;3.长春理工大学 空间光电技术研究所, 长春 130022;4.北方电子技术研究所, 北京 100083
摘要:
提出采用面向动态连接的光纤激光相控阵的深空激光通信及全光组网技术,对4~35万千米深空探测链路功率进行了仿真,由于1.55 μm掺铒光纤放大器的饱和输出限制,使其安全裕量大大低于1.064 μm载波源的安全裕量.模拟了1.064 μm的光纤激光相控阵在深空通信中的远场强度分布图,阵元数目为20×20时,阵元间距为20 μm、纤芯半径为10 μm,远场的扫描角度范围为±1.309 °.结果表明,1.064 μm光纤激光相控阵光源具有深空链路传输优势,该研究为面向动态连接的激光相控通信的实现提供理论依据.
关键词:  深空通信;光纤激光相控阵;扫描角度;动态连接;全光组网
DOI:10.15982/j.issn.2095-7777.2014.04.006
分类号:
基金项目:国家自然科学基金资助项目(60907020,61007046,61275080)
Fiber Laser Phased Array for Deep-Space Information Transmission
WANG Tianshu1,2,3, SUN Hongwei1,2,3, HAN Jian1,2,3, ZHANG Peng1,2,3, HU Yuan1,2,3, ZHANG Lizhong1,2,3, LIU Jingjiao4, JIANG Huilin1,2,3
1.National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun 130022, China;2.Key Laboratory of Optoelectronic Measuring-Controlling and Optical Information Transmiting Technology, Ministry of Education, Changchun University of Science and Technology, Changchun 130022, China;3.Institute of Space Optoeletronics Technology, Changchun University of Science and Technology, Changchun 130022, China;4.North China Institute of Electronic Equipment, Beijing 100083, China
Abstract:
In this paper, the technology of deep space laser communication and all optical networking based on fiber laser phased array using dynamic connection is proposed. The link power in deep space laser communication from 40 000 km to 35 000 km are simulated. Because the limit of saturation output of erbium-doped fiber amplifier, the safety margin using 1.55 μm laser is much lower than that of 1.064 μm. The far field intensity distribution of 1.064 μm fiber laser phased array in deep space is simulated. It is found that the scanning angle range is different with distance between two adjacent elements. With a 20×20 array, fiber core radius and distance between two adjacent elements are 10 μm and 20 μm respectively, the scanning angle range is ±1.309°. Therefore, the fiber laser phased array of the light source at 1.064 μm is more suitable for deep space communication systems. This study provide a theoretical basis for the realization of a dynamic link for laser phased communication.
Key words:  deep space communications;fiber laser phased array;the scanning range;dynamic link;all optical network