Rsoft Cad Manual Guide

): For accurate results, your spatial grid step should ideally be smaller than inside the material. Step 2: Establishing Materials in the Material Registry Before drawing components, define what they are made of. Assign a fixed value (e.g., for Silicon, for Silica).

The RSoft CAD interface replaces the need for decoupled design tools by embedding layout controls directly inside the master workspace.

Designing high-performance photonic integrated circuits (PICs), waveguides, and meta-surfaces requires a strict grasp of the CAD tool's coordinate systems, material libraries, and parametric scripting features. 1. Interface Architecture and Workspace Setup

Full Wave | PDF | Installation (Computer Programs) | Graphical User Interfaces.

The you are designing (Ring resonator, MMI, Y-splitter, grating) The materials involved rsoft cad manual

Automatically places finer mesh cells near material interfaces where fields change rapidly, while using larger cells in the cladding to save memory and time.

After a simulation is executed, the CAD environment links directly to WinPlot and DataBROWSER. These utility tools allow for the immediate visualization of 2D/3D field distributions, spectral responses, and mode profiles. Furthermore, the RSoft CAD is designed to integrate with electronic design automation (EDA) tools, facilitating a seamless workflow from individual photonic device design to full-scale photonic integrated circuit (PIC) simulation.

Standard linear tapers are sometimes inefficient.RSoft allows you to implement .By applying a mathematical function (such as a parabolic or exponential curve) to the width property along the Z-axis, you can design adiabatic tapers that drastically reduce insertion loss. 5. Integrating Simulations from the CAD

If you treat the RSoft CAD interface as just a drawing board, you are missing 80% of its capability. After digging through the documentation, here are three under-utilized features that changed my workflow: ): For accurate results, your spatial grid step

Proper grid spacing is vital. A rule of thumb is to have at least 10–20 grid points per wavelength inside the material. Boundary Conditions (BCs):

: The refractive index step relative to the background.

. Ensure grid sizes satisfy the Courant condition for FDTD ( 3. Geometric Object Creation and Properties

: Contains drawing tools for segments, arcs, circles, and polygons. The RSoft CAD interface replaces the need for

The manual’s suggested dx = lambda/(20*n) is overly conservative for most silicon photonics (slow). Use dx = lambda/(10*n) for initial sweeps, then refine. The manual admits this in a footnote on page 734.

Most users stick to the basics: draw a path, set the index, run the simulation. But the real power lies in the and Optimization modules that are often buried in the appendices of the manual.

Based on Rigorous Coupled-Wave Analysis (RCWA) for periodic gratings. 6. Post-Processing and Data Analysis

To create a photonic crystal lattice, use the feature: Define a single air hole (Circle component).

Grid Size=λ20×ncoreGrid Size equals the fraction with numerator lambda and denominator 20 cross n sub core end-sub end-fraction Scripting with BCX / Commands