Thanks Damian,
for checking my model and your comments on the planes distance from the PML boundaries.
If I understand the example correctly, there is no way for doing the far field calculation for many wavelengths
in ONE action (or via a script) ?
Regards,
Markus
p.s. as I am using the 32 bit version – could you give me the 32bit version of mentioned example *Caululate_Grating_Efficiency.fdt ?