Task · Implementation / optimization · v1-canonical-j-two-image

SRSN Grating-v0

SRSN Grating Coupler Implementation/Optimization

Implement and optimize a silicon-rich silicon nitride grating above a thin SiN waveguide for vertical fiber-to-chip coupling at 1550 nm. Compare evaluator-owned coupling loss with the paper’s 3D-FDTD baseline.

Single-task runCodex · GPT-5.6-sol

Valid

Reporting score S · baseline-normalized1.0468

Official score J · lower is better1.2474

J_baseline = 1.37 dB · reference implementation-jbaseline-2026-09-04-v3. S = 1 means baseline parity; native evaluator gates, not S alone, determine score eligibility.

The saved final J is bound to the trusted evaluator manifest and exact Drive archive; this single-task publication does not grant task-release or official campaign authority.

Agent · model: Codex · GPT-5.6-sol
Finished: 16 Sept 2026 18:52 UTC
Wall-clock duration: 2 h 00 m 26 s
Probe budget: 30 used / 30 configured
Agent timeout: 2 h 00 m
Reasoning effort: medium
Final source digest: 1a2378e1ea7d

The final submission cleared every trusted gate and was scored.

Individually approved single-task run, not an official campaign result or task-release certification. The final score and intermediate probes come from the retained trusted evaluator evidence. Download the verified run archive (HDF5 intentionally excluded).

Final learner design · Codex · GPT-5.6-sol

SRSN-on-SiN vertical grating coupler

Tooth positions and widths from the final design.py, verified against the scored geometry. Layer stack and illumination are fixed by the evaluator; layer heights are schematic.

20 teeth · grating width 14 μm · patterned span 18.482 μm. Geometry illustration, not a simulated field plot.Final source 1a2378e1ea7d

Evidence chain

Why this result is reported this way

01 · InfrastructureValid

The trusted evaluation transaction completed with a valid infrastructure boundary.

02 · Geometry checksDesign valid

Native evaluator geometry validation; this is not a foundry DRC or LVS sign-off.

03 · Final eligibilityEligible

The exact final submission cleared the trusted gate sequence.

04 · Score publicationJ and S published

Official J is authoritative; baseline-normalized S is shown only after score eligibility.

How to interpret this result

A valid outcome means the submitted artifact cleared the evaluator gates recorded for this archived run. It does not imply that every possible physical specification, fabrication condition, or later task revision has been independently re-tested.

Run trajectory · Codex · GPT-5.6-sol

Reporting score S vs. time

S is derived from each eligible raw J at its observed elapsed time. Hollow baseline markers are unscored attempts, not S = 0.

Probeindividual scoreFinalevaluationBest so farcumulative maximum