级联IIR和FIR滤波器的微波光子滤波器的特性分析
The Characteristic Analysis of Microwave Photonic Filter Using Cascaded IIR Filter and FIR Filter
摘要: 在深入研究微波滤波技术的基础上，理论分析了一种级联IIR和FIR滤波器的微波光子滤波器(MPF)。讨论了IIR滤波器的耦合系数、掺饵光纤环的增益和光纤布拉格光栅(FBGs)的反射率以及FIR滤波器的耦合系数对微波光子滤波器滤波性能的影响。结果表明通过优化FIR滤波器的耦合系数，IIR滤波器的耦合系数、掺饵光纤环增益和FBGs的反射率，可以实现平坦带通和平坦带阻滤波性能的互调。
Abstract: Based on the thorough research of the technology of microwave filtering, a kind of microwave photonic filter (MPF) using cascaded IIR filter and FIR filter was theoretically analyzed. And the influences of the coupling coefficient of the IIR filter, the gain of Er-doped fiber ring, the reflectivity of the fiber Bragg gratings (FBGs), and the coupling coefficient of the FIR filter on the filtering performance of the MPF were discussed. The results show that the intermodulation of band pass and band stop filtering can be achieved by optimizing the coupling coefficient of the FIR filter, the coupling coefficient, the gain of Er-doped fiber ring and the reflectivity of FBGs of the IIR filter.
文章引用：聂奎营, 胡总华. 级联IIR和FIR滤波器的微波光子滤波器的特性分析[J]. 光电子, 2019, 9(1): 48-55. https://doi.org/10.12677/OE.2019.91008

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