Reply To: I want to mesaure the transmission for the given unit cell

[anna.wirth-singh]

Hello,

Thanks for sharing your simulation setup. I don't immediately see any issues with your setup, but it is unusual that both the reflection and transmission would be low - the light should typically leave the simulation through either the T or the R monitor, since the side boundaries are Bloch / Periodic. 

Another thing to check would be the simulation time. Would you please check that the simulation is long enough? Resonant structures can trap the light, so the simulation time may need to be increased. To check this, you can add a movie monitor and observe the fields propagating through the system, or you can add a time monitor and view the amplitude of the fields versus time. If you increase the simulation time and the results do not change, then the issue is probably something else. 

Best,

Anna