Thank you for the question. Do you know how the effective index of the ring resonator waveguide changes with temperature? If you do, you can use the
effective index temperature sensitivity property to define how much the effective index changes with a change in temperature:
You can then vary the
temperature setting of the Root element, and the effective index change will automatically be included in the ring resonator.
If you don’t know how the effective index changes with temperature I would recommend taking a look at the thermal switch example to see how this can be determined with a MODE simulation.
I hope this helps. Let me know if you have any questions.