A Comprehensive Equivalent Circuit Model of Silicon-Based Segmented Microring Modulators for Electronic and Photonic Integrated Circuit Codesign

We present an equivalent circuit model for two-segment Si microring modulators (MRMs). The model consists of three blocks: electrical parasitics, electro-optic dynamics, and self-heating effects. Model parameters are derived through curve fitting based on Si MRM characterization. An excellent agreement between simulated and measured eye diagrams at a data rate of 106Gb/s was achieved. This equivalent circuit model can be effectively employed for driver design optimization and MRM wavelength stabilization circuitry improvement.