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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › Effective indices of first two modes in SWG › Reply To: Effective indices of first two modes in SWG

April 18, 2024 at 3:58 pm
Guilin Sun
Ansys Employee

I did not find any guidance on how to select the k value. From what you mentioned it seems it is not the fundamental mode. try to use smaller k range. You may try to use broadband mode source for excitation, since the substrate does not support mode. I did some tests before and it works at least for some cases.

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