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[GWANG]

你好，

Waveguide 在时域里面对设置是比较敏感的，需要正确的去设置和测试。这里有一些有用的链接你可以参考：

Time window: https://optics.ansys.com/hc/en-us/articles/360034399254-Time-window-in-Transient-Sample-Mode-simulator

Sample rate: https://optics.ansys.com/hc/en-us/articles/360034399274-Sample-rate-in-Transient-Sample-Mode-simulator

Fractional delay compensation: https://optics.ansys.com/hc/en-us/articles/360036107974-Fractional-delay-compensation

Digital filter settings: https://optics.ansys.com/hc/en-us/articles/360036107854-Digital-filter-coefficients-automatic-fitting

关于Digital filter的设置原则，你可以参考一下这个：