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Ansys Learning Forum › Forums › Discuss Simulation › Optics › FDTD:: simulation of directional coupler › Reply To: FDTD:: simulation of directional coupler

April 9, 2024 at 8:04 pm
Zhongdi Peng
Subscriber

That's what I set for method A (auto nonuniform, accuracy=1, standard PML=16), with mesh size=(0.1,0.1,0.02) um, which diverged at autosutoff = 0.0025. I am now using a longer time and higher auto shutoff limit of 0.05, along with a finer mesh (0.08,0.08,0.02)um, boundary setting of X min/max's standard PML layer =32, and Y/Z = Metal. Other settings are the same: auto non-uniform mesh, accuracy 1.