摘要
针对基于光梳的微波光子信道化方案中多梳线平坦光梳生成不易且信道化效率低的问题,提出一种基于信号偏振复用的微波光子信道化接收机。利用2套频率不同的2线本振光梳对处在正交偏振态的射频信号进行解调,可同时接收16个1 GHz带宽的子信道。实验结果表明:系统的镜像抑制比可达到24 dB,三阶无杂散动态范围可达到95.2 dB·Hz^(2∕3)。该方案具有子信道数量较多且信道化效率高的优势,在宽带无线通信、雷达、电子战系统中具有较大的应用潜力。
Because optical frequency combs with a large number of comb lines and high flatness are difficult to generate and the channelization efficiency of them is low,a microwave photonic channelized receiver based on signal polarization multiplexing is proposed.By using two 2-line local optical frequency combs with different frequencies to demodulate the radio frequency signal in the orthogonal polarization state,16 subchannels with a bandwidth of 1 GHz can be received simultaneously.Experimental results show that the image rejection ratio and the third-order spurious-free dynamic range of the system can reach 24 dB and 95.2 dB·Hz^(2∕3),respectively.The proposed receiver can simultaneously receive a large number of subchannels and have a high channelization efficiency;thus,it has great application potential in broadband wireless communication,radar,and electronic warfare systems.
作者
董群锋
陈博
Dong Qunfeng;Chen Bo(College of Physics&Electronic Engineering,Xianyang Normal University,Xianyang 712000,Shaanxi,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2022年第21期109-115,共7页
Laser & Optoelectronics Progress
基金
陕西省自然科学基金(2021JM-517)
陕西省重点研发计划(2021NY-213)
陕西省教育厅专项科研计划(21JK0968)
咸阳师范学院中青年拔尖人才培养资助项目(XSYBJ201903)。
关键词
微波光子
信道化接收机
偏振复用
声光移频器
镜像抑制
microwave photonic
channelization receiver
polarization-division multiplexing
acousto-optic frequency shifter
image rejection
