| 星间激光通信发射终端耦合单元的研究 |
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| 引用本文： | 刘宏展,刘立人. 星间激光通信发射终端耦合单元的研究[J]. 激光技术, 2007, 31(4): 416-418 |
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| 作者姓名： | 刘宏展 刘立人 |
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| 作者单位： | 华南师范大学,光子信息技术实验室,广州,510006;中国科学院,上海光学精密机械研究所,信息光学研究室,上海,201800 |
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| 摘 要： | 针对星间光通信系统的要求,采用一种新型的半导体激光耦合方案,用前后正交的非球面柱面透镜准直半导体激光束,再经渐变折射率(graduated refractive index,GR IN)自聚焦透镜聚焦,把光束耦合入单模光纤。就此耦合单元,对耦合效率随半导体激光器的位置偏离及角度偏移进行了研究,在光纤尾纤处测得了输出功率随驱动电流的变化关系,单模运行的半导体激光二极管经耦合后的出纤功率可以达到80mW。结果表明,耦合效率随位置偏离及角度偏移的变化灵敏度都不高,这可以满足星间光通信的要求。
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| 关 键 词： | 激光技术 半导体激光 单模光纤 星间光通信 光耦合 |
| 文章编号： | 1001-3806（2007）04-0416-03 |
| 收稿时间： | 2006-07-25 |
| 修稿时间： | 2006-07-252006-08-29 |
Research of the optical coupling unit for the transmitting terminal of intersatellite optical communication system |
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| LIU Hong-Zhan,LIU Li-Ren. Research of the optical coupling unit for the transmitting terminal of intersatellite optical communication system[J]. Laser Technology, 2007, 31(4): 416-418 |
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| Authors: | LIU Hong-Zhan LIU Li-Ren |
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| Affiliation: | 1. Laboratory of Potonic Information Technology, The South China Normal University, Guangzhou 510006, China;2. Information Laboratory, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 ,China |
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| Abstract: | The laser diode-coupling unit is an important part of an intersatellite optical communication system. In terms of the requirement of the intersatellite optical communication system, a new coupling method was proposed , in which an aspherical cylindrical lens,whose front cylindrical lens is orthonormal to its back cylindrical lens, was used to collimate the laser beam,and then the beam was focused by a GRIN lens and coupled to a single-mode fiber. How the coupling efficiency changing with the fiber position displacement and fiber axial angle variation was studied, and it was found that the coupling efficiency was insensitive to both the above parameters. Furthermore,the optical power versus the driver current at the end of the fiber was tested,and 80mW output power was obtained, which showed the optical unit satisfied the designed request. |
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| Keywords: | laser technique semiconductor laser diodes single-mode fiber intersatellite optical communication optical coupling |
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