Task · Implementation / optimization · v4-y-mirror-input-coverage

Anisotropic SWG-v0

Anisotropic SWG 2 x 2 Beamsplitter Implementation/Optimization

Implement and optimize an anisotropic subwavelength-grating 2 × 2 MMI beamsplitter over 1250–1750 nm. One input is simulated; strict y-mirror symmetry establishes the second input response.

Single-task runCodex · GPT-5.6-sol

Valid

Reporting score S · baseline-normalized1.2775

Official score J · lower is better0.5655

J_baseline = 1 dimensionless · 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: 18 Sept 2026 19:31 UTC
Wall-clock duration: 2 h 00 m 23 s
Probe budget: 30 used / 30 configured
Agent timeout: 2 h 00 m
Reasoning effort: medium
Final source digest: f38840d9db0c

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

Anisotropic SWG 2 × 2 beamsplitter

Top view from the final design.py, verified against all 278 scored GDS polygons. One physical input was simulated; the second response is derived through verified y-mirror symmetry.

Final learner design: y-mirror-symmetric silicon SWG beamsplitter with 75 MMI periods, 190 nm pitch, 3.248 micrometre width and residual-bottom air-void footprints. All 278 scored mask polygons are drawn to scale. — 27.65 μm long · 75 MMI periods · 190 nm pitch. Geometry illustration, not a simulated field plot.Final source f38840d9db0c

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