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Lumerical Fdtd Tutorial _hot_ Direct

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Managing Editor, Updated April 29, 2026
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Lumerical Fdtd Tutorial _hot_ Direct

Lumerical FDTD Tutorial: A Comprehensive Guide to Finite-Difference Time-Domain Simulations

Plane Wave

For most nanophotonic applications, use a or a Total-Field Scattered-Field (TFSF) source. Define the wavelength range (e.g., 400nm to 700nm).

Did you find this tutorial useful? Check specific guides on "Lumerical Multiphysics" or "Lumerical Charge" for photonic-electronic co-simulation. lumerical fdtd tutorial

  • Finite-Difference Time-Domain method overview
  • When to use FDTD (vs. MODE or STACK)

Coordinates:

Everything is defined relative to the global origin. Coordinates: Everything is defined relative to the global

Through step-by-step exercises, the tutorial demonstrates how setting the mesh size ($\Delta x$) relative to the wavelength ($\lambda$) directly impacts accuracy. A key takeaway is the rule of thumb that a mesh of $\lambda/(10-20)$ is required for qualitative results, while plasmonic or high-index contrast structures demand far finer resolution. This reinforces the concept that FDTD is not an automatic solver but a tool requiring deliberate numerical parameterization. lumerical fdtd tutorial