Silicon photonic electro-optical ring modulators are key components in short-range optical interconnects due to their low operating voltage, compact size, and compatibility with CMOS circuit drivers. This application note demonstrates the complete creation of a silicon photonic ring modulator with Synopsys’ Photonic Solutions tools. First, RSoft Photonic Device Tools will be used to create abstracted models for the ring modulator’s building blocks: a quarter-ring passive part and a three-quarter ring phase shifter part. These building blocks are then imported into OptSim Circuit, for circuit-level simulation and optimization of the complete ring modulator. The Custom PDK Utility will be used to automate the step from physical design with RSoft Photonic Device Tools to the creation of the abstracted models for OptSim Circuit.