DGTD product reference manual

The Discontinuous Galerkin Time-Domain (DGTD) reference manual provides detailed descriptions of product features.

Related resources

• DGTD course: A self-paced course intended for beginner to intermediate users with a focus on providing an understanding of the solver physics, simulation workflow, and data analysis. The "My first simulation" section is a great getting started tutorial.
• Ansys Learning Forum (Photonics category): A large repository of Q&A content from the Ansys Lumerical community.
• Application Gallery: Find example files, simulation methodologies, and tips to help you get started quickly and easily. You can also browse the application gallery directly from within our products.

Solvers

• Discontinuous Galerkin Time-Domain (DGTD) solver introduction
• Units and normalization
• Far field projections
• Grating projections

Workflow

• Simulation Workflow
• View Ports

Material properties

• Optical materials
  • Material Database
  • Material Explorer
  • Optical Material Models
  • Scripting Optical Materials
• Electrical and thermal materials
  • Electrical/Thermal Material Database
  • Electrical/Thermal Material Models
  • Semiconductors
  • Creating a New Semiconductor Material
  • Alloys
  • Creating a New Alloy Material
  • Quaternary Alloys
  • Alloy Mole Fraction
  • Fluids
  • Scripting Electrical Materials
  • Scripting Thermal Materials
• Understanding mesh order for overlapping objects

Simulation objects

• Reference Geometries and Geometric Features

Structures

• Primitives : Triangle, Rectangle, Polygon, Circle, Ring, Waveguide, Sphere, Pyramid, Planar solid, 2D rectangle, 2D polygon
• Layer builder
• Dataset builder
• Equation interpreter

Groups

• Structure Groups

Simulation

• Simulation Region
• Partitioned volume
• DGTD solver
• Mesh constraint

Sources

• Planewave
• Plane Source Direction and Polarization
• Gaussian

Monitors

• Frequency
• Time
• Absorption

Boundary conditions

• Boundary conditions

Import

• GDSII files
• STL import
• STEP import

Optimizations and sweeps

Learn how to run parameter sweep, optimization, yield analysis and s-parameter analysis tasks.

• Parameter sweeps
  • Sweep scripting commands
  • Nested Sweeps
  • Running parameter sweeps without the CAD
• Optimization
  • Optimization scripting commands
• Monte Carlo analysis
  • Monte Carlo scripting commands
  • Monte Carlo analysis with spatial correlations
• S-parameter matrix sweep
• Workflow management

Result analysis

• Visualizer and figure settings