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Ansys Learning Forum › Forums › Discuss Simulation › Photonics › How to determine the position of DFT monitor on farfield scattering analysis ? › Reply To: How to determine the position of DFT monitor on farfield scattering analysis ?

December 9, 2024 at 9:32 pm
Kirill
Forum Moderator

Dear Subscriber,

Ideally, the monitor should be positioned close enough to capture the entire scattered field. In your example, since there is high-angle scattering, I would trust the closest monitor more. You can place the monitor as close as 2–3 cells outside the TFSF source. Additionally, you can use the movie monitor in your simulation to visually inspect the scattering process.

You may find the following references helpful:

  1. Defect scattering and detection – Ansys Optics
  2. Mie scattering (FDTD) – Ansys Optics
  3. Tips and best practices when using the FDTD TFSF source – Ansys Optics
  4. Scattering - list of examples – Ansys Optics

Best regards,
Kirill