Reply To: 2D inverse design grating coupler

[rahul.sanghvi]

In 3D grating coupler design (refering to the link below), the codes pid_gc_3d_sweeps.py and pid_gc_3d_optimization.py create a new .fsp file for simulations. Can you suggest a method where I use these optimisation algorithms for an existing .fsp file.

I have my 3D grating coupler already designed but I want to optimise it further. 
Thanks in advance.

(https://optics.ansys.com/hc/en-us/articles/1500000306621-Inverse-design-of-grating-coupler-3D)