Guilin Sun
Ansys Employee

nice curves!

converting k points to k value:

The k points are relative to 2pi/a, so you can simply multiply 2pi/a to get k value.

you need to use frequency domain monitor to record 1 or 2 frequency points on the band, and then check the mode symmetry property. Please note that now you will need much longer simulation time, and most likely need to use apodization:

Since you only need to know the symmetry property, simulation time may not be too long with apodization. You can test how long it is proper.