The RSoft CAD manual includes a wide range of features that make it an essential resource for CAD users. Some of the key features include:
(variables). Instead of fixed dimensions, you can assign a variable like
Includes a built-in library of common materials and allows for the creation of custom material profiles using data files or expressions. Global Settings: Users configure settings such as background material
: Calculates the fundamental or higher-order guided mode of your input waveguide and launches it cleanly.
Dispersive Materials: Using Lorentz-Drude or Sellmeier models. rsoft cad manual
RSoft CAD provides several ways to define how light interacts with the structure. The Material Editor allows for the inclusion of frequency-dependent (dispersive) data, which is critical for accurate FDTD simulations in FullWAVE. Users can also define "Effective Index" profiles to simplify 3D problems into 2D simulations, significantly reducing computation time without sacrificing essential physics. Simulation Setup and Execution
: For semiconductor platforms (Silicon-on-Insulator) where an etching depth determines light confinement.
The is not a book you read once—it is a reference you grow into. From drawing your first straight waveguide to scripting a 1000-parameter Monte Carlo simulation, every answer resides within its pages. However, efficiency comes from knowing where to look: the index on meshing for FDTD stability, the variable manager for optimization, and the troubleshooting appendix for cryptic license errors.
| | Manual Section | Root Cause | Fix | | :--- | :--- | :--- | :--- | | "Failed to create mesh: Negative Jacobian" | §9.4.2 | Distorted, non-orthogonal mesh cells | Increase mesh step size or smooth the waveguide bend radius. | | "Material data not found for wavelength" | §7.3.1 | Missing Sellmeier coefficients for your specified λ | Use Material > Fit Index to interpolate data from the manual’s table. | | "Boundary condition mismatch: PML" | §14.1 | PML thickness too thin relative to evanescent field | Set PML thickness to ≥ 1λ and PML Reflectivity = 1e-6 . | | "License checkout failed" | Appendix C | Environment variable RSOFT_LICENSE_FILE not set | Follow manual syntax: set RSOFT_LICENSE_FILE=port@server | The RSoft CAD manual includes a wide range
One of the most valuable skills you can learn from the RSoft CAD manual is the use of . Hard-coding numerical values (e.g., a waveguide width of "450") is a recipe for inefficiency. Instead, RSoft allows for parametric design using variables.
Step-by-step guides for creating simple waveguides or lattices to familiarize users with the GUI. Command Line Interface (CLI):
The RSoft CAD Manual is not a light read—it runs several hundred pages. However, it is the difference between guessing your layout parameters and engineering them precisely. For any serious photonics simulation engineer, this manual deserves a permanent place on the digital bookshelf (and a bookmark on the "Boolean Operations" and "GDSII Import" chapters).
The CAD manual acts as the "anchor" for several specialized simulation engines: Global Settings: Users configure settings such as background
If you need to optimize a specific photonic device, let me know:
Anisotropic Materials: For crystals with direction-dependent indices. Step-by-Step Layout Construction
The Canvas: The primary 2D or 3D workspace where structures are visualized.