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作 者:宫原野 董姗姗 GONG Yuanye;DONG Shanshan(Bengbu Branch Company,China Mobile Communications Group Co.,Ltd.,Bengbu 233000,Anhui,China;College of Information Engineering,North China University of Technology,Beijing 100144,China;School of Business,Anhui University of Finance and Economics,Bengbu 234041,Anhui,China)
机构地区:[1]中国移动通信集团有限公司蚌埠分公司,安徽蚌埠233000 [2]北方工业大学电子信息工程学院,北京100144 [3]安徽财经大学商学院,安徽蚌埠234041
出 处:《江汉大学学报(自然科学版)》2018年第3期244-250,共7页Journal of Jianghan University:Natural Science Edition
摘 要:将4个光纤谐振环采用耦合器相互级联,再与普通马赫-曾德尔干涉仪滤波器上下臂相耦合,设计了一种新型的光纤谐振环辅助马赫-曾德尔干涉仪滤波器。根据光纤环谐振理论与信号流程图理论,推导出滤波器输出端的光学传递函数,并对其传输特性进行模拟分析。仿真结果表明:滤波器输出光谱具有顶部平坦、边沿滚降明显、窄带宽、高精细度的优良性能。数值计算得出,滤波器的精细度达到69.4,能够对密集波分复用系统中的光信号做到精确提取与选择。A novel optical filter combining ring resonator with Mach-Zehnder interferometer was de-signed. In this structure, four fiber ring resonators were cascaded and combined with Mach-Zehnder in-terferometer using coupler. Formulas of the transfer functions were deduced by fiber ring resonance theo-ry and signal flow graph method and the simulation analysis was given as well. The results showed thatoutput spectrum of this filter had excellent performance such as flatness filtering response, strengtheningof rolloff in transition band, narrow bandwidth and high finesse. The numeral calculations showed thatthe fineness of this structure reached 69. 4, it is able to select and extract optical signal precisely indense wavelength division multiplexing system.
关 键 词:集成光学 光学滤波器 光纤谐振环 马赫-曾德尔干涉仪 高精细度
分 类 号:TN253[电子电信—物理电子学] TN256
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