| 采用多量子阱器件的无线光通信差拍接收方案研究 |
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| 引用本文： | 刘璐,汤俊雄,石珏,张治国,黄绮,付盘铭.采用多量子阱器件的无线光通信差拍接收方案研究[J].光学学报,2004,24(8):079-1084. |
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| 作者姓名： | 刘璐 汤俊雄 石珏 张治国 黄绮 付盘铭 |
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| 作者单位： | 北京大学信息科学技术学院,"量子信息与测量"教育部重点实验室,北京,100871;中国科学院物理研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金 (6 0 0 770 19 6 0 2 4 0 4 2 0 2 37)资助课题 |
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| 摘 要： | 研究一种采用光折变多量子阱器件的无线光通信自差拍接收方案。与寻常相干接收方案相比，省去了中频跟踪电子系统；与量子阱器件零拍方案相比，采用中频窄带滤波器，提高了接收端机的输出信噪比。理论上研究了自差拍相干接收方案，从其物理机制出发，结合信噪比分析，探讨了影响相干接收方案的主要因素。建立了该方案的实验系统，并开展了有意义的实验研究。理论分析及实验结果表明，该方案对激光大气传输所引起的诸多不利影响皆有一定的抑制作用，因而有可能应用于卫星地面激光通信和地面无线光通信系统。
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| 关 键 词： | 光纤通信技术 光折变多量子阱器件 差拍相干接收 地面无线光通信 星地激光通信 |
| 收稿时间： | 2003/5/19 |
Research of Heterodyne Reception Optical Wireless Communication Utilizing Photorefractive Multiple Quantum Well Device |
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| Liu Lu Tang Junxiong Shi Jue Zhang Zhiguo Huang Yi Fu Panming Quantum Information and Measurement Key Laboratory of Minist ry of Education,School of Electronics Engineering and Computer Science,Peking University,Beijing Institute of Physics,The Chinese Academy of Sciences,Beijing.Research of Heterodyne Reception Optical Wireless Communication Utilizing Photorefractive Multiple Quantum Well Device[J].Acta Optica Sinica,2004,24(8):079-1084. |
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| Authors: | Liu Lu Tang Junxiong Shi Jue Zhang Zhiguo Huang Yi Fu Panming Quantum Information and Measurement Key Laboratory of Minist ry of Education School of Electronics Engineering and Computer Science Peking University Beijing Institute of Physics The Chinese Academy of Sciences Beijing |
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| Institution: | Liu Lu1 Tang Junxiong1 Shi Jue1 Zhang Zhiguo2 Huang Yi2 Fu Panming2 1 Quantum Information and Measurement Key Laboratory of Minist ry of Education,School of Electronics Engineering and Computer Science,Peking University,Beijing 10008 0 2 Institute of Physics,The Chinese Academy of Sciences,Beijing 100871 |
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| Abstract: | A novel heterodyne reception of optical wirele ss communication adopting photorefractive multiple quantum well device is discussed. Compared with the conventional heterodyne scheme, it avoids the complicated intermediate-frequency tracking system. Compared with homodyne reception using multiple quantum well device, the noise is suppressed dramatically with the help of electronic intermediate-frequency filter. Consequently, the signal-to-noise ratio is improved. The theoretical expression of self-coherence signal is deduced. And the expression of signal-to-noise ratio is given. The impact on the novel heterodyne reception scheme is also analyzed in detail. An experiment of the scheme is conducted. The result of theoretical calculations and experiment show that the scheme can repress to a certain extent many problems due to laser transmission in the atmosphere. This new scheme can be applied to satellite-ground laser communication and terrestrial optical wireless communication. |
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| Keywords: | optical fiber communication technology photorefractive multiple quantum well device heterodyne coherent reception terrestrial optical wireless communication satellite-ground laser communication |
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