I am new to the photonic crystal study. I am trying to simulate the band structure given in the paper “A proposal for optical WDM using embedded photonic crystal ring resonator with distributed coupling”. I am using 2D simulation (as the paper), period 552 nm and crystal radius=110 nm.
I have few questions.
Although the band gap generated from my file seems to have the same bandgap like fig. 1 (a) on the paper, the states looks very different. Below freq value of 0.3 I have only two states, while in the paper there are about 13 states. Why this is happening?
How can I generate the single mode waveguide (red line in fig 1 (a))
I can say that this is a bandgap for TM polarization as I am using vertical electric dipoles. Is there any way else I can use to determine if this is a TM or TE states (may be using mode monitors or other thing).
My project file is attached for one of my points.
band1_sweep1.fsp (7.5 MB)
My band gap structure for TM is