3-layer stack transmission spectrum vs Tidy3D#
validated · 2026-08-28
This case compares a local FDTDX result with pinned reference data generated by Tidy3D.
Representative field across a layered material geometry.#
What is exercised#
CW Poynting T=S_T/S0 at 0.85/1.0/1.15 µm. Same cells as pulsed_vs_cw. Agrees with TMM theory and Tidy3D golden when measured as power (not |E|).
This case runs at its declared full benchmark resolution (resolution factor 1.0).
Recorded result#
Metric |
Observed / error |
Reference / limit |
Error |
Effective budget |
Result |
|---|---|---|---|---|---|
|
0.019626 |
0.05 |
0.019626 |
0.05 |
PASS |
|
0.0185452 |
0.03 |
0.0185452 |
0.03 |
PASS |
The table is rendered from progress.json; it is not a hand-written success claim. For metrics that report an error directly, the “observed” column repeats that error and the reference column is the acceptance threshold.
Reproduce#
uv run fdtdx-bench run --case parity_multilayer_T
Implementation and provenance: benchmarks/cases/parity_multilayer_T/case.yaml, benchmarks/cases/parity_multilayer_T/run.py, benchmarks/goldens/parity_multilayer_T.npz.