基于马赫曾德尔调制器的倍频因子和输出相位可调的微波光子移相器  

Microwave photonic RF frequency multiplying phase shifter with tunable multiplication factor and a full 360-deg tunable range

作　　者：燕颖 马健新[1] YAN Ying;MA Jian-xin(State Key Laboratory of Information Photonics and Optical Communication,and Beijing Key Laboratory of Space-Ground Interconnection and Convergence,School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学电子工程学院、信息光子学与光通信国家重点实验室、天地互联与融合北京重点实验室,北京100876

出　　处：《中国光学（中英文）》2023年第4期948-960,共13页Chinese Optics

基　　金：IPOC国家重点实验室基金(No.IPOC2020ZT06)。

摘　　要：提出一种倍频因子连续可调,且相位连续变化的微波光子移相系统。该方案使用两个并联的马赫曾德尔调制器,通过2×2光耦器与两个双并联的集成马赫曾德尔调制器级联,产生可调节的±1~4阶边带,并使用相位调制器对其中一个光波进行相移。通过调整DPMZM的射频驱动信号和直流偏置电压以及PM的直流电压,可以产生相位从0到360°连续可调的2到8次谐波。仿真结果表明,当射频信号频率为10 GHz时,可产生频率为20~80 GHz的微波信号。当相位调制器的直流偏置电压与半波电压比值在0到2间变化时,对应微波信号的相位从0°到360°变化,可以获得约20 dB的大光边带抑制比(OSSR)和电杂散抑制比(ESSR)。此外,分析了调制器消光比对输出微波信号光载波抑制比和电杂散抑制比的影响,以及光载波的波长和功率对微波信号幅度波动的影响。A filterless Microwave Photonic Phase Shifter(MPPS)with a tunable Frequency Multiplication Factor(FMF)and a full 360-deg tunable range is theoretically analyzed and verified by simulation.In the scheme,two parallel Mach-Zehnder Modulators(MZM),cascaded with two Dual-Parallel integrated Mach-Zehnder Modulators(DPMZM)by a 2×2 Optical Coupler(OC),are used to generate the±1st-to 4th-order sidebands adjustably,and a Phase Modulator(PM)is used to phase shift one of the two lightwaves.After photodetection,the 2nd-to 8th-order harmonics with a continuously tunable phase shift from 0 to 360-deg can be generated by adjusting the RF driving signal and the DC bias voltage of the DPMZM,and the DC voltage of the PM.Simulation results demonstrate that both 360-deg continuously tunable phase shift and frequency multiplication can be implemented.Large Optical Sideband Suppression Ratio(OSSR)and Electrical Spurious Suppression Ratio(ESSR)of around 20 dB can be obtained.The phase shifter wavelength insensitive performance has been also evaluated by simulation.

关 键 词：微波光子学 移相器 倍频 马赫-曾德尔调制器 

分 类 号：O482.31[理学—固体物理]