JZ

thanks for your response. Actually I did changed the 'Omega' parameters both in the 'simulation' function and 'insert_mode' function. I look the codes again and think this might be the...

Thanks for your reply which helps me to understand more about the codes. It seems that I did not clarify my question(my fault, sorry). Simply speaking, I want to use...

emmmmm...... that sounds not good. May I ask you what software you use in this paper`Adjoint method and inverse design for nonlinear nanophotonic devices` which written by you and your...