Reply To: Plane wave and Bloch boundary conditions in slab waveguide

[Erik M]

Dear Amrita,

Thank you for coming back to this. For a slab waveguide, I also do not expect a dependence of the transmission on the incident angle. However, I will introduce a height discontinuity in the slab waveguide, which in turn, leads to a dependence on the incident angle. (For instance, I expect to see total internal reflection above certain indicent angles.)

I tried to implement your suggestion in the post above. I used the script in my first post to build the geometry and exchanged the plane wave source for a mode source. However, I am not able to select the bloch boundary condtions. Moreover, I suspect that setting the boundary conditions for the source only will not change how the boundary conditions are applied to the propagating wave through the waveguide.

What am I missing here?

Regards,
Erik