Klein, H.H.KleinBornholdt, C.C.BornholdtPrzyrembel, G.G.PrzyrembelSigmund, A.A.SigmundMolzow, W.-D.W.-D.MolzowBach, H.-G.H.-G.BachMoehrle, M.M.Moehrle2022-03-122022-03-122013https://publica.fraunhofer.de/handle/publica/382141We have developed electroabsorption modulated DFB Lasers at 1305 nm using an identical InGaAlAs MQW core in the DFB and the EAM section. A 50Omega matching circuit is realized on-chip giving an f 3dB of 39.4 GHz. We present 56 Gbit/s eyes with a dynamic extinction ratio of 9.5 dB. The fiber coupled output power under modulation is +5 dBm at 45degC.enconference paper