基于PDM-DMZM的多通道变频移相信号产生  

Generation of Multichannel Frequency Conversion Signal with Full Range Phase Shift Based on PDM-DMZM

作　　者：李赫 赵尚弘[1] 于丽娜 林涛[1] 张昆[1] 王国栋 蒋炜[3] 李轩[1] Li He;Zhao Shanghong;Yu Lina;Lin Tao;Zhang Kun;Wang Guodong;Jiang Wei;Li Xuan(Information and Navigation College Air Force Engineering University Xi’an Shaanxi,710077,China;State key Laboratory of Mathematical Engineering and Advanced Computing Wuxi,Jiangsu 214123,China;Xi’an Branch of National Key Laboratory on Space Technology Xi’an,Shaanxi 710077,China)

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077 [2]数字工程与先进计算国家重点实验室,江苏无锡214123 [3]中国空间技术研究院西安分院,陕西西安710077

出　　处：《中国激光》2020年第12期218-229,共12页Chinese Journal of Lasers

基　　金：国家自然科学基金(61571461,61231012);陕西省自然科学基金(2019JQ707);陕西省科技新星基金(2019KJXX-082)。

摘　　要：提出一种可实现相位调谐的微波光子上、下变频信号生成方案,其主要器件为偏振复用-双驱动马赫-曾德尔调制器(PDM-DMZM)。在所提方案中通过调节调制器直流偏置点实现上、下变频信号的切换,通过调节偏振控制器实现相位连续调谐,该方案可扩展为多通道独立相位调谐系统。仿真结果表明,频率为10 GHz的射频信号可以分别转换为下变频信号(1 GHz)和上变频信号(19 GHz),其相位可在0°~360°范围内连续调谐,且不同相位下生成信号的功率最大波动在0.3 dB以内,杂散信号抑制比可保持在20 dB以上,系统的最大输入频率可调范围为0.5~65.0 GHz,生成的移相信号频率可覆盖几GHz到130 GHz。In this study, a microwave photon up and down-conversion signal generation scheme is proposed to realize phase tuning. The main component of this scheme is a polarization multiplexing dual-drive Mach-Zehnder modulator(PDM-DMZM). In the proposed scheme, up and down-conversion signals switching can be realized by adjusting the direct current bias point of the modulator. Further, the phase is continuously tuned by adjusting the polarization controller. The proposed scheme can be extended to a multichannel independent phase tuning system. Simulation results show that the radio frequency signal with a frequency of 10 GHz can be converted into a down-conversion signal(1 GHz) and an up-conversion signal(19 GHz). Its phase can be continuously tuned in the range of 0°--360° and generated under different phases. The maximum power fluctuation of the signal is less than 0.3 dB, the spurious signal suppression ratio can be maintained above 20 dB, the maximum input frequency of the system can be adjusted from 0.5 to 65.0 GHz, and the frequency of the generated phase-shifted signal can range from several GHz to 130 GHz.

关 键 词：光通信 微波光子 上、下变频 全范围移相 多通道独立相位调谐系统 

分 类 号：TN29[电子电信—物理电子学]