Reply To: Diverging simulation when going from long to short wavelength

[Amrita Pati]

Hi Daniel,

Thanks for sharing additional information! If it is a single wavelength simulation, I wouldn't expect the fitting to be very problematic. In broadband simulations, the fitting can have diiferent features in different wavelength ranges and can lead to instability, even with the same fitting parameters. Would you be able to share a screenshot of the fitting from the Material Explorer of the current simulation (the one that is diverging)?

If it is a single wavelength/narrowband simulation, what happens if you run the simulation with a fixed refractive index. For example, instead of using SiN you set the material as Object Defined Material and set the index field as the corresposnding value at that wavelength?

Also, in this region where you see this growth of electric field, I suppose there is no unique feature? 

Regards,
Amrita