Tagged: lumerical
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March 30, 2022 at 9:12 am
liuyi61
SubscriberMarch 31, 2022 at 8:38 amChih-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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