| 无线光通信系统中的光接收机设计 |
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| 引用本文： | 谭林伟,元秀华,黄德修.无线光通信系统中的光接收机设计[J].光学与光电技术,2005,3(4):16-18. |
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| 作者姓名： | 谭林伟 元秀华 黄德修 |
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| 作者单位： | 华中科技大学光电子工程系,武汉,430074 |
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| 摘 要： | 介绍了无线光通信的特点，比较了光电检测器、光纤接收模块、自聚焦透镜和多模光纤接收机耦合三种设计方案，提出了自聚焦透镜和多模光纤之间的耦合设计是最优方案。详细讨论了自聚焦透镜和多模光纤之间的耦合设计和电信号处理过程。试验证明，采用该方案后系统输出信号的信噪比显著提高，完全可以满足通信系统的要求。
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| 关 键 词： | 自聚焦透镜 多模光纤 数值孔径 耦合 光接收模块 |
| 文章编号： | 1672-3392（2005）04-0016-03 |
| 收稿时间： | 2005-01-12 |
| 修稿时间： | 2005-03-10 |
Optical Receiver for Optical Wireless Communication System |
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| TAN Lin-wei,YUAN Xiu-hua,HUANG De-xiu.Optical Receiver for Optical Wireless Communication System[J].optics&optoelectronic technology,2005,3(4):16-18. |
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| Authors: | TAN Lin-wei YUAN Xiu-hua HUANG De-xiu |
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| Abstract: | The characteristics of free space optical communication are presented. An optimized scheme coupling by GRIN lenses is proposed, after analyzing and comparing the optical receiver design schemes of the PD detecting coupling by fiber. The coupling between GRIN lenses and multimode is analyzed in details, and then the signal processing is discussed. As a result, this scheme is easy to be realized in technology. The SNR of the output signal is greatly improved and it can completely meet the communication system by using this scheme. |
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| Keywords: | graded index lens multimode fiber numerical aperture coupling optical receiver module |
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