| 基于LiNbO3M-Z调制器的UWB信号PAM调制技术研究 |
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| 引用本文： | 沈丹鸿,李培丽,郑加金,赵猛,马蔷,周雯,赵赞善.基于LiNbO3M-Z调制器的UWB信号PAM调制技术研究[J].光电子．激光,2013(1):79-86. |
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| 作者姓名： | 沈丹鸿 李培丽 郑加金 赵猛 马蔷 周雯 赵赞善 |
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| 作者单位： | 南京邮电大学 光电工程学院,江苏 南京 210003;南京邮电大学 光电工程学院,江苏 南京 210003;南京邮电大学 光电工程学院,江苏 南京 210003;南京邮电大学 光电工程学院,江苏 南京 210003;南京邮电大学 光电工程学院,江苏 南京 210003;南京邮电大学 光电工程学院,江苏 南京 210003;中国移动集团 海南有限公司, 海南 海口 570125 |
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| 基金项目： | 国家自然科学基金(60707006)和江苏省高校自然科学研究(09KJB510009)资助项目 (1.南京邮电大学 光电工程学院,江苏 南京 210003； 2.中国移动集团 海南有限公司, 海南 海口 570125) |
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| 摘 要： | 提出一种基于LiNbO3Mach-Zehnde调制器(MZM)实现超宽带(UWB)脉冲幅度调制(PAM)的方案,只利用一个LiNbO3-MZM,实现幅度调制,结构简单,易于实现。利用OptiSys-tem7.0软件对方案进行了仿真,研究了调制信号的传输特性,并分析了光源功率、光源波长、脉冲宽度、调制速率、延迟时间以及传输距离对调制信号的影响。
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| 关 键 词： | 超宽带(UWB) 脉冲幅度调制(PAM) LiNbO3 Mach-Zehnde调制器(LiNbO3-MZM) |
| 收稿时间： | 2012/7/25 0:00:00 |
| 修稿时间： | 9/5/2012 12:00:00 AM |
Research of ultra-wideband pulse amplitude modulation based on LiNbO3Mach- Zehnder modulator |
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| SHEN Dan-hong,LI Pei-li,ZHENG Jia-jin,ZHAO Meng,MA Qian g,ZHOU Wen and ZHAO Zan-shan.Research of ultra-wideband pulse amplitude modulation based on LiNbO3Mach- Zehnder modulator[J].Journal of Optoelectronics·laser,2013(1):79-86. |
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| Authors: | SHEN Dan-hong LI Pei-li ZHENG Jia-jin ZHAO Meng MA Qian g ZHOU Wen and ZHAO Zan-shan |
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| Affiliation: | College of Optoelectronic Engineering,Nanjing University of Posts & Telecomm unications,Nanjing 210003,China;College of Optoelectronic Engineering,Nanjing University of Posts & Telecomm unications,Nanjing 210003,China;College of Optoelectronic Engineering,Nanjing University of Posts & Telecomm unications,Nanjing 210003,China;College of Optoelectronic Engineering,Nanjing University of Posts & Telecomm unications,Nanjing 210003,China;College of Optoelectronic Engineering,Nanjing University of Posts & Telecomm unications,Nanjing 210003,China;College of Optoelectronic Engineering,Nanjing University of Posts & Telecomm unications,Nanjing 210003,China;Hainan CO.,LTD,China Mobile Group,Haikou 570125,China |
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| Abstract: | We propose a modulation scheme of ultra-wideband (UWB) pulse amplitude bas ed on a lithium niobate Mach-Zehnder modulator (LiNbO3MZM).In the scheme,th e clock signal is added to the electric signal.and pulse amplitude modulation (P AM) can be realized by this method.The scheme is simple and integrated easily.By using the software of OptiSystem 7.0,the generated ultra-wideband (UWB) monocy cles with different power levels of laser device (LD),different optical carrier wavelengths,different input signal pulse widths,different modulation rates,diffe rent time delays and different transmission distances are experimentally studied and analyzed.The results show that this scheme has good tolerance to the input signal pulse width,and it is insensitive to the wavelength change.This shceme al so has good performance in transmission,and the modulated signal can transmit fo r 10km.In order to get distortionless modulated signal,the power of LD and modu lation rate must be within a certain range.According to the analysis,the maximum of laser power is 6dBm and the modulation rate is 30Gbit/s.The time delay sj hould be controlled in a permissible range of inaccuracy.Overall,this scheme has considerable advantages,and the output signal can satisfy the existing communic ation system needs. |
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