采用半导体光放大器进行直接调制的全双工光纤无线通信系统实验研究  

Experimental investigation on a full-duplex radio-over-fiber system using directly modulated SOA for upstream link

作　　者：何晶[1] 文鸿[1] 雷小燕[1] 陈林[1] 余建军[1] 文双春[1] 

机构地区：[1]湖南大学计算机与通信学院,湖南长沙410082

出　　处：《通信学报》2008年第3期93-97,共5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);湖南省自然科学基金资助项目(06JJ50108)~~

摘　　要：提出并实验研究了一种将光源和光调制器集中于中心站,而基站中使用直接调制半导体光放大器的新型光纤无线通信系统,在中心站采用相位调制器和光交错复用器产生光毫米波,并同时将未调制信号的光载波与光毫米波一起发送到基站;在基站中将下行链路的光载波分离出来作为上行链路的光载波,并利用半导体光放大器将上行链路的信号调制到光载波上,同时对上行链路的信号进行放大。实验结果显示可以将下行链路中2.5Gbit/s的数据和上行链路中250Mbit/s的数据在单模光纤中传输40km。A novel radio-over-fiber （ROF） system to centralize the light source and optical modulator at the central station was proposed and experimentally demonstrated. At base station, a semiconductor optical amplifier （SOA） was used as a data modulator. At central station, a phase modulator and an interleaver were used to generate optical millimeter wave. The generated optical millimeter wave and the un-modulated optical cartier were transmitted to base station, at which the un-modulated optical cartier can be used for the uplink and a SOA was used to amplify and modulate the uplink data, This ROF system shows unique advantages due to its large dispersion tolerance for both the 2.5 Gbit/s downstream data and 250Mbit/s upstream data after transmission over 40kin single-mode fiber.

关 键 词：光纤无线系统 基站 光毫米波 半导体光放大器 

分 类 号：TN929.11[电子电信—通信与信息系统]