Error in concatenation for nested sweep



I used to be able to run the attached file before. However, now when I try to run the nested sweep it gives me concatenation error. I am using the nested sweep to change incidence angle and wavelength. I am using the newest FDTD version. I tried having an override mesh but this did not help since each simulation gives me one number only (reflection value). I read the other posts about the same error but they did not help. I am wondering if you have an idea about why I might be having this error.

Gratings - Copy.fsp (328.6 KB)


Hi @Pascal

This seems to be a bug and I have reported it. I will keep you updated once there is any progress.

Thanks for your patience.


Hi @Pascal

It seems to fix/workaround the issue if I check the “set simulation bandwidth” option in FDTD Advanced tab. Set the simulation wavelengths to 0.4 to 0.6 um. It will then “lock” the mesh and therefore make sure the size of the matrix will be all the same. The link below might be also useful for your review:
Error running nested sweep - individual results could no be concatenated