一种新型的光纤谐振环辅助MZI型高Q滤波器  

A Novel Fiber Ring Resonator Loop MZI High Quality Filter

作　　者：宫原野 董姗姗 牛长流 丁智 GONG Yuanye;DONG Shanshan;NIU Changliu;DING Zhi(School of Computer Engineering, Bengbu University, Bengbu 233030 China;College of Information & Network Engineering,Anhui Science and Technology University,Fengyang 233100 China;College of Information Engineering,North China University of Technology,Beijing100144 China)

机构地区：[1]蚌埠学院计算机工程学院,安徽蚌埠233030 [2]安徽科技学院信息与网络工程学院,安徽凤阳233100 [3]北方工业大学电子信息工程学院,北京100144

出　　处：《西华大学学报（自然科学版）》2019年第4期94-99,共6页Journal of Xihua University:Natural Science Edition

基　　金：蚌埠学院工程化教学改革试点课程项目(2017GCKC5)

摘　　要：针对密集波分复用系统中,对特定波长光信号进行精确选择与提取的需求,本文将光纤谐振环与马赫-曾德尔干涉仪相结合,设计出一种新型的光学滤波器。采用信号流程图理论和光纤谐振环理论推导出滤波器输出端的传递函数,并进行模拟分析。仿真结果表明:通过引入光纤谐振环的反馈调节机制、优化滤波器结构中的耦合系数,在滤波器输出端获得顶部平坦、通带形状接近方形、品质因子达到2.815×103的输出光谱。与其他类型的光纤环辅助MZI滤波器相比,本文提出的新型光纤环辅助MZI滤波器能够获得更大的品质因子,可以在密集波分复用系统中发挥更好地选频滤波功能。Accurate selection and extraction of specific wavelength optical signals are important demand in dense wavelength division multiplexing system. A novel optical filter which combining fiber ring resonator with mach-zehnder interferometer was proposed in this paper. Transfer function of this structure was deduced by the signal flow graph method and optical fiber resonant ring theory, and the analysis of simulation was present.The results show that based on the phase modification provided by the fiber ring resonator and optimizing the coupling coefficient in this structure, a flatness filtering response with square passband shape and high quality factor was 2.815×10 3.Compared with other forms of fiber ring assist MZI filters,the novel fiber could provide better quality factor,which is helpful to select filtering frequency in dense wavelength division multiplexing system.

关 键 词：集成光学 光纤谐振环 马赫-曾德尔干涉仪 信号流程图理论 

分 类 号：TN256[电子电信—物理电子学]