基于三环辅助Mach-Zehnder干涉仪的带宽可调滤波器设计

Jiang Jia,Geng Minming,Liu Qiang, Zhang Zhenrong

ACTA PHOTONICA SINICA（2021）

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Abstract

设计了一种基于绝缘体上硅的具有大带宽调谐能力的紧凑型可重构光滤波器.该装置由三个微环辅助马赫-曾德尔干涉仪构成,利用硅的热光效应可以控制微环谐振器的相位,进而同时调节滤波器的带宽和中心波长.用时域有限差分法对器件的性能进行了仿真,仿真结果表明,带宽的调谐范围为1.4～10.6 nm,占自由光谱范围的11.5％～85％;阻带消光比大于20 dB,通带损耗为0.4～0.7 dB,器件尺寸为40μm×60μm.

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Key words

Optical filter, Silicon-on-insulator, Mach-Zehnder interferometer, Microring resonator, Tunable bandwidth

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