Kim, MinkyuMinkyuKimMarchese, ChiaraChiaraMarcheseMagdziak, RafalRafalMagdziakKobbi, HakimHakimKobbiDe Heyn, PeterPeterDe HeynVelenis, DimitriosDimitriosVelenisFerraro, FilippoFilippoFerraroBan, YoojinYoojinBanVan Campenhout, JorisJorisVan Campenhout2026-05-282026-05-282025979-8-3315-9532-6https://imec-publications.be/handle/20.500.12860/59459We present a 2.1mu m radius disk modulator with an integrated heater, achieving 6.47 THz free-spectral-range (FSR), 0.41nm/mW heater efficiency, operating up to 50Gb/sNRZ with 1.6Vpp drive swing, which is achieved by the optimization of bend loss and vertical PN junctionengProceedings paper10.1109/ecoc66593.2025.11263194WOS:001680185000272