Barzanji, AdamAdamBarzanjiUllrick, ThijsThijsUllrickCools, KristofKristofCoolsReep, TomTomReepVerellen, NielsNielsVerellenYurtsever, GunayGunayYurtseverBogaerts, WimWimBogaerts2026-06-042026-06-042025979-8-3315-0619-31949-2081https://imec-publications.be/handle/20.500.12860/59562This work presents an efficient Transmission Matrix Model (TMM) for designing silicon nitride grating couplers in flow cytometry. The TMM simulates transient transmission with a four orders-of-magnitude speed increase over FDTD, enabling Bayesian Optimization that achieves a Peak-to-Baseline (P2B) transmission of 0.221.engProceedings paper10.1109/siphotonics64386.2025.10984463WOS:001556149600003