Technical Notes

Explains the reasoning behind choosing an analysis method and deciding the settings, from a technical standpoint.

All articles

All technical notes

Covers technical topics where a judgment is needed in design and analysis, such as choosing an analysis method, setting boundary conditions, and computational resource requirements.

Lumerical FDTD GPU Solver: Requirements and Current Limitations

A summary of the Lumerical FDTD GPU solver: NVIDIA CUDA driver and GPU hardware requirements, how licensing is counted from SM count, the conditions a simulation must meet, and the current limitations on solvers, sources and monitors.

Bloch and periodic boundary conditions at oblique incidence in Lumerical FDTD: suppression of boundary scattering by phase correction

Bloch Boundary Conditions in Lumerical FDTD and MODE: Principle, Settings and Computational Cost

Bloch boundary conditions in Lumerical FDTD and MODE: how they differ from periodic boundaries, the phase correction for oblique incidence, and the cost of complex-valued fields (twice the memory and twice the time). Also covers when to use BFAST instead and the Source Angle setting that prevents boundary scattering.

Ring resonator transmission spectra from varFDTD, 3D FDTD and 2D FDTD, demonstrating 3D-level accuracy at much lower compute cost

Why varFDTD Suits Large PIC Design: Accuracy and Speed Against BPM and EME

varFDTD in Lumerical MODE treats a 3D waveguide structure as an efficient 2D model, which makes propagation analysis far faster. This article covers how it differs from FDTD, BPM and EME, benchmarks speed against accuracy, and shows where it fits in PIC design.

Other categories

Back to Technical Information Design and Simulation Guides Seminar Materials Release Notes

Want to check a technical note against your own design flow?

From confirming that the settings in an article are appropriate, through to discussing how they apply to your particular problem.

Request a technical consultation