Scripts for Adiabatic Coupler from "Zeqin Lu, Dritan Celo, Patrick Dumais, Eric Bernier, and Lukas Chrostowski, 'Comparison of Photonic 2×2 3-dB Couplers for 220 nm Silicon-on-Insulator Platforms,' presented at an IEEE conference, 2015"
https://tidy3d.simulation.cloud/workbench?taskId=pa-eaf4abb7-facf-421b-a24f-8bb34638b175