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Microdisk or microring modulators (MDMs or MRMs) realize compactelectro-optic modulation in active silicon photonics (SiP) foundry platforms. Akey advantage of these resonant modulators is that they readily implement densewavelength division multiplexing (DWDM) in optical interconnects by tuning andlocking the MDMs/MRMs to the DWDM wavelength grid. Compact modeling of staticand transient dynamics of these modulators is important for co-simulation withCMOS drivers and wavelength stabilization circuits. This work presents thefirst compact model for microdisk modulators with a novel approach that usesexperimental measurements and allows rapid and accurate simulation. Thisapproach employs coupled real-valued differential equations with analyticsignals in Verilog-A, leading to a 7X speed up in transient simulation timeover the current art while enhancing accuracy. Since the model is generalized,it can also model microring resonators in addition to MDMs. The model alsoincludes thermo-optic tuning for MDM/MRM with an embedded microheater, which isessential for simulations involving resonant wavelength stabilization.

Compact Modeling and Rapid Simulation of Silicon Photonic Micro-Disk and Ring Modulators