Reply To: 2D grating phase calculation Lumerical RCWA 2023 R1

[giovanni.piscopo]

 

Dear Amrita,

thank you very much for your answer! I will definitely read the article you sent me and implement the example that you linked!

Just as a additional info, I set the interfaces with this command: 

 

“set(“interface absolute positions”, [0, h_wg, h_wg+t]);”

 

where h_wh = 1.3613 um and t = 0.1 um and automatically I got the interfaces set as in the picture I attached.

To confirm also the result, I calculated the refractive index distribution and I was able to see all the three indices of the three layers (actually about that I’ve seen that there is a bug in the visualization of the cross section because the thicknesses of the layers do not match the actual values but in FDTD there is no such a problem. However I’ve seen on another post on the forum that this is actually a visual bug that does not interfere with the simulation results).

Also, is there a difference in results between defining the interfaces between "reference positions" and absolute positions"? Because I find more intuitive defining them in terms of "absolute positions".

Thank you in advance

Regards

 

Giovanni