The software application by Synopsys that includes the feature/module called RSOFT_OPTSIMCAD is **RSoft Photonics Design Suite**.
**RSOFT_OPTSIMCAD** is a module within the RSoft Photonics Design Suite used for simulating and designing optical devices and systems. It offers capabilities for simulating optical propagation and designing various components such as photonic integrated circuits, waveguides, and optical fibers. The RSoft Photonics