| 采用并行DD-MZM实现光学倍频毫米波40GHzRoF系统的QPSK |
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| 引用本文： | 陈翔,李迎春,蔡尤美,邹是桓.采用并行DD-MZM实现光学倍频毫米波40GHzRoF系统的QPSK[J].上海大学学报(自然科学版),2011(6):696-701. |
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| 作者姓名： | 陈翔 李迎春 蔡尤美 邹是桓 |
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| 作者单位： | 上海大学特种光纤与光接入网省部共建重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(60877053); 上海市科委科技创新行动计划(10511500602) |
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| 摘 要： | 提出一种采用并行双电极马赫曾德尔调制器(dual-drive Mach-Zehnder modulator,DD-MZM)实现光学倍频毫米波光载无线(radio over fiber,RoF)通信系统的正交相移键控(quadrature phase shift keying,QPSK)调制方法.在中心站,光波进入并行DD-MZM后分为4路,分别由4个微波信号调相.此光波通过光纤后被送到基站,经光电转换后产生的高次谐波含有毫米波成分,调整调相指数可使所需的毫米波振幅最大.该系统在生成毫米波的同时,实现了QPSK调制,解决了传统毫米波RoF系统QPSK调制方式的缺陷.通过仿真验证了毫米波的产生和信号的调制解调过程,证明了该链路的可行性.
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| 关 键 词： | 毫米波 双电极马赫曾德尔调制器 光载无线 谐波生成 |
Optical QPSK Modulation Based on Parallel DD-MZM Scheme in a 40 GHz Radio over Fiber System |
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| CHEN Xiang,LI Ying-chun,CAI You-mei,ZOU Shi-huan.Optical QPSK Modulation Based on Parallel DD-MZM Scheme in a 40 GHz Radio over Fiber System[J].Journal of Shanghai University(Natural Science),2011(6):696-701. |
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| Authors: | CHEN Xiang LI Ying-chun CAI You-mei ZOU Shi-huan |
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| Institution: | CHEN Xiang,LI Ying-chun,CAI You-mei,ZOU Shi-huan(Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200072,China) |
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| Abstract: | A new millimeter-wave radio over fiber(RoF) system based on optical frequency multiplication(OFM) technique is proposed,in which quadrature phase shift keying(QPSK) is implemented on optical wave in a parallel structure of Mach-Zehnder modulators(MZM).In the center station,light-wave injected into parallel DD-MZM is split into four optical carries,which are phase modulated by four microwave signals respectively,and then combined together.The light-wave is photodetected to generate an electrical signal consi... |
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| Keywords: | millimeter-wave dual-drive Mach-Zehnder modulator RoF harmonic generation |
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