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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › DGTD band structure calculation › Reply To: DGTD band structure calculation

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

Unfortunately band structure simulation requires to use Bloch boundary conditions, and DGTD has not implemented yet:

https://optics.ansys.com/hc/en-us/articles/360034918593-Boundary-conditions-in-DGTD-Simulation-Object

https://optics.ansys.com/hc/en-us/articles/360034382714-Bloch-boundary-conditions-in-FDTD-and-MODE

https://optics.ansys.com/hc/en-us/articles/360034382734-Periodic-boundary-conditions-in-FDTD-and-MODE

So even though you set angles it will be like normal incidence.

Please file a feature request for this: 

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