I’d like to simulate the self heating effect in a depletion type micro-ring modulator. I cannot quite figure out how to do it in Lumerical? Basically I have a silicon micro ring resonator with an embedded pn junction. The ring is coupled to a bus waveguide where light of given intensity and wavelength is sent in. When the wavelength of the light is tuned across the ring’s resonance, the ring will self heat due to absorption of the light, and the resonance wavelength will change as a result. What I want to do is to calculate the ring resonator’s transmission spectrum with self heating.