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NanoComp / meep

free finite-difference time-domain (FDTD) software for electromagnetic simulations
GNU General Public License v2.0
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Some problems with using meep for 3D simulation #2617

Open ChenKBIT opened 1 year ago

ChenKBIT commented 1 year ago

Hello, I have been using meep for 3D simulation recently, such as using the coupler.gds file in the example for 3D simulation, and I have two problems. One is that the silicon part of the code is set to -0.11 to 0.11, which will overlap with the SOI part. Another problem is that the same GDSII file is imported into commercial software, the output difference is very big, which is the reason why, is it due to the algorithm of gds file import is inconsistent, or other reasons, such as whether meep is different from other commercial software in 3D simulation level?

Thank you for your answer. letter.txt

oskooi commented 1 year ago

Another problem is that the same GDSII file is imported into commercial software, the output difference is very big

Have you tried opening coupler.gds using Klayout? It works fine for me. The script in Tutorial/S-Parameters of a Directional Coupler also runs without any problems using Meep built from the master branch.