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Design of a series-coupled microring resonator wavelength filter using the digital filter design method
Journal of the Optical Society of America B ( IF 1.9 ) Pub Date : 2021-09-10 , DOI: 10.1364/josab.437989
Zhifeng Peng , Takuya Komatsubara , Mao Yamauchi , Taro Arakawa

We propose a digital filter design method for high-order series-coupled microring resonator (MRR) filters considering coupling loss in coupling areas. This method makes it possible to design high-order MRR filters with desired parameters such as a 3 dB wavelength bandwidth, free spectral range (FSR), and center wavelength, which have been difficult to design so far. It is possible to apply the proposed design method to design MRR filters based on the Vernier effect with an expanded FSR. We demonstrate fourth-order Butterworth and Chebyshev silicon-based MRR filters designed with the proposed method. The 3 dB wavelength bandwidth, FSR, and center wavelength of the designed MRR filter are almost identical with the target values.

中文翻译:

用数字滤波器设计方法设计串联耦合微环谐振腔波长滤波器

我们提出了一种考虑耦合区域耦合损耗的高阶串联耦合微环谐振器 (MRR) 滤波器的数字滤波器设计方法。这种方法可以设计具有所需参数(例如 3 dB 波长带宽、自由光谱范围 (FSR) 和中心波长)的高阶 MRR 滤波器,这些参数迄今为止难以设计。可以应用所提出的设计方法来设计基于具有扩展 FSR 的 Vernier 效应的 MRR 滤波器。我们展示了使用所提出的方法设计的四阶巴特沃斯和切比雪夫硅基 MRR 滤波器。设计的 MRR 滤波器的 3 dB 波长带宽、FSR 和中心波长与目标值几乎相同。
更新日期:2021-10-02
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