comsol photonics

Hi,

As I am interested in mainly modeling diffractive/refractive structures or other similar optical devices, which package would be the easiest to learn/use and works well for optical device modeling?

Thanks,
ck1224

I think RSOFT is very well suited to this application but it really depends on your design. If your structure size is comparable to the wavelength, then you might use any of the three, and if it is a 3D structure, you might want to go with CST. but if the structure is too big, then I think RSOFT would be the fastest option.