Set your simulation to 2D (for speed) or 3D (for accuracy). Define the span of your workspace. Ensure that your PML boundaries are placed at least half a wavelength away from any scattering structures to avoid evanescent wave coupling into the boundary. Step 3: Insert the Correct Source
To appreciate the value of Lumerical FDTD tutorials, it helps to know how the software fits into the broader FDTD landscape. A common comparison is with , an open-source FDTD package.
Correct usage of Plane Waves, Total-Field Scattered-Field (TFSF) sources, and Mode Sources for waveguides.
Finite-Difference Time-Domain (FDTD) simulation is the gold standard for modeling complex nanophotonic, plasmonic, and metamaterial devices. Ansys Lumerical FDTD is the industry-leading software for this task. However, mastering its interface, script commands, and mesh settings can be challenging for beginners.
Search official documentation and application notes
Used for periodic structures like metasurfaces or photonic crystal slabs. Periodic is used for normal incidence, while Bloch is required for angled plane wave illumination. Mesh Accuracy and Convergence Testing
Top tutorials clarify the difference between Mode sources (for waveguides), Plane Wave sources (for free-space scattering), and Total-Field Scattered-Field (TFSF) sources (for nanoparticles).
Navigate to the "FDTD 100" (Introduction) or "FDTD 200" (Advanced) courses. Use your browser’s "Print to PDF" function on the comprehensive text modules to compile a highly accurate, official offline training manual. 2. University Course Syllabi and Lab Manuals
To master the software, you need structured resources that cover both theoretical foundations and hands-on implementation. The resources categorized below represent the gold standard in FDTD training. Top Official Ansys Lumerical Learning Paths
To maximize your efficiency, select a tutorial tailored to your specific field of research: Photonics Application Key Tutorial Focus Areas Recommended Source Types
Defining geometry (primitives like rings/polygons) and assigning material properties from the database. 2. Solver Setup
