采用电光调制器产生光毫米波的全双工通信光纤无线通信系统  

Full-duplex radio-over-fiber system with a novel scheme for millimeter-wave generation by single arm modulator

作　　者：陈林[1] 董泽[1] 李瑛[1] 余建国[2] 文双春[1] 余建军[1] 

机构地区：[1]湖南大学计算机与通信学院,湖南长沙410082 [2]北京北方烽火科技有限公司,北京100085

出　　处：《通信学报》2007年第9期85-90,共6页Journal on Communications

基　　金：国家高技术研究发展计划("863"计划)基金资助项目(2007AA01Z263);国家教育部新世纪优秀人才支持计划;高等学校博士学科点专项科研基金资助项目(20040532005);湖南省自然科学基金资助项目(06JJ50108);湖南大学重点基金资助项目~~

摘　　要：实验研究了一种采用单个电光调制器产生光毫米波的方法和相应的全双工无线通信系统。在中心站采用电混频器产生电毫米波,然后再利用电光制器产生双边带信号。利用光交错复用器将中心载波和双频一阶边带信号分离。双频一阶边带用于产生2倍射频信号的光毫米波,而中心光载波用来作为上行链路的光载波。实验显示采用频率为20GHz射频信号产生光毫米波的频率为40GHz,而且将下行链路和上行链路中2.5Gbit/s的数据在单模光纤中传输距离达20km,而功率代价均小于0.5dB。A novel scheme to generate an optical millimeter-wave and a full-duplex radio-over-fiber system by using one optical modulator was proposed and experimentally demonstrated. A mixer was employad to generate electrical millimeter-wave, and single-arm electronic-optical modulator to generate double sideband signals. Then an optical interleaver is employed to separate the spectrum of the double-sideband signals. The separated first-order sidband modes were used to generate optical millimeter-wave with double RF frequency, while the separated optical carrier was reused for upstream connection. The experiment results show that the 40GHz optical millimeter-wave will be generated by 20GHz RF resource, and 2.5Gbit/s downstream and upstream data can be transmitted over 20km in fiber.

关 键 词：光纤无线通信 光毫米波产生 光载波重用 光交错复用器 

分 类 号：TN929.9[电子电信—通信与信息系统]