请问在Lumerical官网中的PIN马增调制器例程中计算调制响应中的功率传输时脚本中这两个地方怎么理解

- March 30, 2022 at 9:12 am
  
  liuyi61
  Subscriber
- March 31, 2022 at 8:38 am
  
  Chih-Hao Chen
  Ansys Employee
  
  您好
  arg算出來的可能會很是好幾個2pi之外。我認為ang1的目的是把相位投到0~2*pi之間。這樣比較方便判讀，就像540度的相位和180度相位，兩者在強度的意義是一樣的，但後者就比較直覺。
  這邊的i，我覺得應該放在real part上，這是因為光傳遞一段相位時會是以下的式子:
  exp(i*k*d)
  從這邊您就可以看到實部的n對應到相位，虛部就對應到損耗。

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