摘要
为简化光载无线通信系统(RoF)中心站(CS)和基站(BS)结构,提出了一种基于光纤布拉格光栅(FBG)和偏振复用技术的8倍频全双工RoF系统方案。通过设置马赫-曾德尔调制器(MZM)偏置电压和射频驱动信号幅度保留部分主载波与偶数阶边带,再利用FBG将主载波与偶数阶边带分离。结合偏振复用技术将主载波和偶数阶边带复用到X和Y两个偏振方向上,其中抑制载波偶数阶边带用于下行链路数据传输,而主载波在BS站作为上行链路载波使用。理论推导了实现机理并进行了实验验证,结果表明当使用10 GHz射频驱动时可实现稳定的80 GHz光载毫米波信号,传输20 km后下行链路和上行链路功率代价仅为0.1和0.07 dB,表现出了较好的系统性能。
In order to simplify the structure of central station(CS) and base station(BS) of optical radio over fiber system(RoF),a frequency eightfold full-duplex RoF scheme based on FBG and polarization multiplexing technology was proposed.By setting the bias voltage of Mach-Zehnder modulator(MZM) and the amplitude of RF driving signal,some of the main carriers and even-order sidebands were retained,and then FBG was used to separate the main carriers from even-order sidebands.Combined with polarization multiplexing technology,the main carrier and even-order sideband were multiplexed into X and Y polarization directions.The even-order sideband of suppressed carrier was used for downlink data transmission,while the main carrier was used as the uplink carrier at BS.The realization mechanism was deduced theoretically and verified experimentally.The results show that a stable 80 GHz optical millimeter wave signal can be achieved when 10 GHz RF driver is used.The power penalty of downlink and uplink system after 20 km transmission is only 0.1 and 0.07 dB,which shows good system performance.
作者
王现彬
杨彦彬
卢智嘉
高彦彦
WANG Xian-bin;YANG Yan-bin;LU Zhi-jia;GAO Yan-yan(Mechanical and electrical College,Shi Jia Zhuang University,Shijiazhuang 050000,China)
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2020年第2期130-135,共6页
Journal of Optoelectronics·Laser
基金
河北省高等学校科学技术研究项目(Z2018023)
石家庄学院应用型课程开发与建设项目(YYKC-201816)资助项目.
关键词
8倍频
偏振复用
光载无线通信
全双工
frequency eightfold
polarization multiplexing
radio over fiber
full-duplex
