聚合物微环辅助MZI型可调谐滤波器

发布时间：2018-05-01 22:41

本文选题：微环谐振器 + 马赫-曾德尔干涉仪　；参考：《光通信研究》2017年04期

【摘要】：为改善普通马赫-曾德尔干涉仪滤波器的滤波性能,将微环谐振器与马赫-曾德尔干涉仪相结合,设计出一种新型滤波器结构。利用信号流程图理论推导出滤波器传递函数,并对其输出端口透射谱进行仿真分析。仿真结果表明:当微环谐振器周长(L_1和L_2)与马赫-曾德尔干涉仪上下臂臂长差Δd满足如下关系:L_1=2L_2=Δd时,滤波器输出光谱顶部平坦,边沿陡峭,形状类似于"方形"。通过数值计算,取微环谐振器周长L_1=1 510μm时,滤波器的自由光谱范围为2nm、3dB带宽为1.15nm、精细度达到1.74、品质因子为1 347.82。文章提出的微环辅助马赫-曾德尔干涉仪型滤波器的滤波性能与普通马赫-曾德尔干涉仪滤波器相比有了明显改善。选择光电特性优良的聚合物材料设计微环谐振器和马赫-曾德尔干涉仪,当施加在滤波器上的电压发生变化时,滤波器输出光谱向右漂移,可以满足不同的滤波需求。
[Abstract]:In order to improve the filtering performance of ordinary Mach-Zehnder interferometer filter a new filter structure is designed by combining the micro-ring resonator with the Mach-Zehnder interferometer. Based on the theory of signal flow chart, the transfer function of the filter is derived, and the transmission spectrum of the output port is simulated and analyzed. The simulation results show that when the circumference of microring resonator, L _ (1) and L _ (2) and Mach _ Zehnder interferometer's arm length difference 螖 _ d satisfy the following relation: L _ L _ 1T _ (2) L _ (2) = 螖 _ d, the output spectrum of the filter is flat, the edge is steep, and the shape is similar to "square". By numerical calculation, the free spectrum range of the filter is 1.15nm, the fineness is 1.74, and the quality factor is 1 347.82 when the perimeter of the microloop resonator L11010 渭 m is taken. The filter performance of the microloop assisted Mach-Zehnder interferometer filter proposed in this paper is much better than that of the ordinary Mach-Zehnder interferometer filter. Microloop resonators and Mach-Zehnder interferometers are designed by using polymer materials with excellent optoelectronic properties. When the voltage applied on the filter changes, the output spectrum of the filter shifts to the right, which can meet different filtering requirements.
【作者单位】：中国移动通信集团安徽有限公司蚌埠分公司;宿州学院机械与电子工程学院;
【基金】：安徽省自然科学基金资助项目(1408085QA20) 安徽省重点研究与开发项目(1704a0902022) 安徽省高校优秀青年人才基金资助项目(gxyq2017094) 安徽省高等学校自然科学研究重点项目(KJ2015A200)
【分类号】：TN713

【参考文献】