Ansys Learning Forum Forums Discuss Simulation Photonics lumopt: unable to calculate the gradient Reply To: lumopt: unable to calculate the gradient

Guilin Sun
Ansys Employee

It can be due to different reasons. Maybe the index contrast is too high to get correct gradient. Please try 2D FDTD or varFDTD first.

and you can also modify the online example to use your material system and see if it works.