Thank you so much for your prompt reply. Can you please see the picture.
The picture of a box which has two tapers on both sides and needs to match the arch of a ring resonator with 100micron radius and 10 micron thickness.
The whole structure goes on top of the ring resonator and needs to carve around it.
I also attached the codes of my structure to give you a better idea of what I mean.
Many thanks in advance for your help.