In the complex world of photonic device simulation, the layout environment is the foundation of accuracy. For engineers and researchers using Synopsys RSoft products, the RSoft CAD environment is the control center for defining waveguide structures, simulating light propagation, and analyzing results. However, without a deep understanding of the RSoft CAD manual and its functionalities, users often find themselves limited to basic simulations, unable to leverage the full power of the software’s multi-physics capabilities.