Ansys Insight: 关于FDTD中的Port及其使用

- March 19, 2021 at 12:43 am
  
  Guilin Sun
  Ansys Employee
  
  8.17及以上的FDTD都有Port这个物件 https://kb.lumerical.com/ref_sim_obj_fdtd_ports.html
  它内部含有模式光源、频域场监视器和模式分解监视器。请参考相关链接。
  
  Port输出是指定模式的S参数，而不是单个场分量。用户可以根据需要选择要分解发模式，以便得到这些模式的反射和透射S参数。 S参数是振幅量，是复数。要得到强度／功率量，即透射率和反射率，只需要用其绝对值平方就可以。
  如果你需要了解更多的S参数问题，请参考网站或者找一些教科书。
  除S参数外，模式分解监视器的输出参见　Ansys Insight: 模式分解监视器中如何提取模式和一些参数的意义　
  频域监视器：Ansys Insight: 频域监视器Profile和Power有什么区别（包括折射率监视器）

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