[Hussein M.E. HusseinParticipant]

the OptiFDTD tools has a parameter for the third-order susceptibility
while the paper gives you the kerr coefficient (n2)

there is some relation between those two parameters, and this relation could be found in this paper
https://www.osapublishing.org/josab/abstract.cfm?uri=josab-21-3-640

try it and notify me please with the results

[Hussein M.E. HusseinParticipant]

here is the observation line analyzes for both files (the power is not the same!)

Attachments:

1. 

   WGPBG.png
   

2. 

   WGEllip.png
   

[Hussein M.E. HusseinParticipant]

the rest of the files

Attachments:

1. design-with-WGElliptic-.fdt

[Hussein M.E. HusseinParticipant]

i have the same problem also

i have a transmission higher than 100% !
i don’t understand what is wrong!

i wish some one could answer us