Reply To: DGTD band structure calculation

[Guilin Sun]

In the periodic direction you should use Bloch BC.

"a" is the period;

and the absolute value of "k" is  [0 - pi/a].

when you change N, I am not sure if the bandstructure can keep the same since their absolute K is not the same. What I mean is their transmission changes a little, when you do a regular transmission simulation, like a grating. This should be done before you do the band structure simulation.