作　　者： ; ; ;

机构地区： 广东工业大学

出　　处： 《光通信技术》 2011年第8期62-64,共3页

摘　　要： 提出有效产生四倍频光载毫米波的RoF系统。系统在中心站配置一个PM调制器和光滤波器,产生抑制一阶边带和中心载波的信号,发送至基站。基站侧两个二阶边带在光电检测器中拍频,产生四倍于射频信号的光载毫米波。仿真结果显示,12GHz射频频率可产生48GHz光载毫米波,2.5Gb/s的数据可在下行链路的光纤中传输35km以上,功率代价少于1.5dB。 A scheme of radio over fiber system to generate frequency-quadrupled millimeter-wave effectively was demonstrated.A electronic-optical phase modulator（EO-PM） and a optical filter was equipped at central station（CS） to produce a signal whose first-order sideband was suppressed by adjusting the phase modulation index and whose carrier signal was suppressed by a optical filter,then the signal was transmitted to the base station（BS）.In BS,two second-order sidebands beat to generate optical millimeter-wave with quadruple frequency in the photoelectric detector.Simulation result shows that the 48GHz optical millimeter-wave is generated by 12GHz RF resource.The eye diagram and power penalty result prove that the 2.5Gb/s data is successfully transmitted over 35km single-mode fiber for downstream channels with less than 1.5dB power penalty.

关 键 词： 电光相位调制 光纤无线 光载毫米波

领　　域： [电子电信] [电子电信]