SPP的转换效率

- March 22, 2022 at 3:05 am
  
  miaomiao1489
  Subscriber
  
  经常看文献中有写，为了提高SPP效率所做出的一系列过程，那这个SPP的转换效率具体在FDTD中如何求解呢？
- March 22, 2022 at 10:39 pm
  
  Guilin Sun
  Ansys Employee
  
  你知道SPP效率的数学公式吗？如果还不知道，建议再参考一下文献，有的时候单凭名称不能唯一定义一个量。
  
  我觉得应该是指入射功率有多少转换为SPP的功率，也就是透射率，透射到这个SPP模式的功率。建议用Port端口，选取所期望的SPP模式就应该可以计算。参见
  
  Ansys Insight: 关于mode expansion监视器的使用和结果分析 — Ansys Learning Forum
  
  这个跟PORT里面的结果类似，因为PORT里面含有模式光源（可以选定是不是作为光源），频域监视器和模式分解监视器。
- March 23, 2022 at 9:00 am
  
  miaomiao1489
  Subscriber
  
  非常感谢老师给我的意见，我看的一篇文献是这样子写的
  
  
  
  它的结构是这样的
  
  
  
  初步的想法是在狭缝左右各放一个线监视器得出坡印廷矢量，随后在对称的点做积分去作比值，想问下老师这样可以吗？

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