Thanks for your response. Just to recall...
I am working on a 2D simulation, where I have a dielectric grating over a metal layerand I am looking for bandstructure with TE mode only.I have oriented dipoles out of plane for TE mode calculation but stillgetting some extra modes, for which you suggested touse symmetry in your last comment.Could you please help me in setting symmetry boundary conditions in my simulation.
I have used Bloch boundary conditions in y-direction and PML in x-direction.
Could you please suggest how to use symmetry to separate TE modes from others.