Marvell’s 800G PAM4 + 1.6T coherent + co-packaged optics roadmap turns on MMI splitter uniformity, ring resonator Q + tuning range, and grating coupler bandwidth. ChipletOS Photonic Signoff v1 ships 5 of 6 primitives on trained AI surrogates(AI surrogate at ≥ 99% R² vs reference solver) — MMI / ring / grating / MZI / photonic crystal are all production-live today.
Insertion-loss imbalance < 0.3 dB across 16 outputs is the spec. ChipletOS MMI surrogate v1 (AI surrogate at ≥ 99% R² vs reference solver) returns {insertion_loss_dB, imbalance_dB, L_pi_um} in < 10 ms per call — drop into the Marvell layout-iteration loop directly.
Ring surrogate v1 returns {Q_loaded, FSR_nm, FWHM_nm} + a 95% conformal prediction interval sourced from a held-out test residual quantile — bounded predictions for every (radius, gap, width, λ) Marvell wants to evaluate.
Grating surrogate v1 returns {coupling_efficiency, peak_wavelength_nm, bandwidth_3dB_nm} — driver-friendly outputs that match the Marvell CWDM band plans. Pareto-explore (period / duty / etch / angle) against your target.
GET /v1/photonics/signoff-health — confirms 5 of 6 primitives on trained AI surrogates with full validation-suite checks passing.POST /v1/photonics/predict-waveguide-mode — closed-form analytical model (canonical for waveguide).POST /v1/photonics/validate-against-ieee — published-paper cross-check across 5 SOI Neff papers, within the analytical-model expected band vs published silicon-photonic references.