四微环辅助MZI滤波器的仿真分析  

Simulation Analysis of Four-micro-ring-assisted MZI Filters

作　　者：董姗姗 齐雪 DONG Shanshan;QI Xue(College of information&Network Engineering,Anhui Science and Technology University,Bengbu 233000,China)

机构地区：[1]安徽科技学院信息与网络工程学院,安徽蚌埠233000

出　　处：《北京石油化工学院学报》2022年第4期35-41,共7页Journal of Beijing Institute of Petrochemical Technology

基　　金：安徽科技学院校级一般项目(X2019048);2021年度安徽高校自然科学研究重点项目(KJ2021A0894)。

摘　　要：为改善常规MZI滤波器余弦状的输出光谱和提高单微环辅助MZI滤波器的性能稳定性,设计出一种四微环辅助MZI滤波器。采用光波导理论、微环谐振理论和信号流程图理论推导出滤波器在输出端的传递函数,在Matlab环境下对滤波器的输出光谱进行仿真分析。结果表明:在滤波器的输出端能够获得顶部平坦的方形波型,当微环半径为50μm时,滤波器的自由光谱范围为32 nm,消光比达到20 dB,品质因子为60.31,精细度为1.25。与常规MZI滤波器相比,四微环辅助MZI滤波器的滤波性能显著提升。与同类型滤波器相比,滤波器输出光谱的稳定性有了很大提高。In order to improve the cosine output spectrum of conventional MZI filters,a four-micro-ring-assisted MZI filter is designed in this research.The optical wave-guide theory,micro-ring resonance theory and signal flow chart theory are used to derive the transfer function of the filter at the output end,and the output spectrum of the filter is simulated and analyzed in the Matlab environment.Results show that the top flat square wave type can be obtained at the output end of the filter.When the micro-ring radius is,the filter has a free spectral range of 32 nm,extinction ratio of 20 dB,quality factor of 60.31 and fineness of 1.25.Compared with conventional MZI filters,the filter performance is significantly improved.Compared with the same type of filters,the stability of the output spectrum of the filter has been greatly improved.

关 键 词：集成光学 光学滤波器 微环谐振器 马赫-曾德尔干涉仪 

分 类 号：TN253[电子电信—物理电子学] TN256