The default auto-mesh settings (Mesh Accuracy 1 to 8) scale the grid based on the shortest wavelength in the highest-index material. Use Mesh Accuracy 2 or 3 for rapid prototyping, and 4 or higher for final convergence testing. Boundary Conditions:
Changing the (default is 0.99) to a lower value like 0.9 or 0.5 can stabilize simulations containing high-index materials or complex metals. 2. Step-by-Step Simulation Workflow in Lumerical
Space is divided into discrete cells where electric ( ) and magnetic ( ) fields are calculated at staggered positions. lumerical fdtd tutorial pdf
: Use the optimized non-uniform mesh to balance accuracy with computational speed. Simulation Time : Ensure the "Shutoff Level" (typically 10-510 to the negative 5 power 10-610 to the negative 6 power
Easily handle intricate shapes and dispersive materials. The default auto-mesh settings (Mesh Accuracy 1 to
The Lumerical workflow is generally divided into four main stages: Step 1: Define the Geometry Use the Layout tab to import or create structures.
She learned to keep structures the PML to prevent the simulation from "seeing" an edge where there shouldn't be one. Chapter 4: Capturing the Data Simulation Time : Ensure the "Shutoff Level" (typically
Use on boundaries where light should exit without reflecting. Choose the "Stretched Coordinate PML" profile for steep angles.
Script or use the UI analysis tab to run the farfield3d command, projecting the field to a distance of millimeters or meters. 5. Scripting and Automation
To achieve accurate results, a systematic approach is essential. Most professional tutorials follow these standard phases: FDTD product reference manual - Ansys Optics