Matiss, A.A.MatissLudwig, R.R.LudwigFischer, J.-K.J.-K.FischerMolle, L.L.MolleSchubert, C.C.SchubertLeonhardt, C.C.C.C.LeonhardtBach, H.-G.H.-G.BachKunkel, R.R.KunkelUmbach, A.A.Umbach2022-03-112022-03-112010https://publica.fraunhofer.de/handle/publica/3693692-s2.0-779539229242-s2.0-848968494502-s2.0-84896852810A novel coherent receiver module is presented, comprising two optical 90°-hybrids monolithically integrated with eight waveguide pin-photodiodes in balanced configuration. Superior optical performance is demonstrated in a 28 Gbaud NRZ-QPSK 150 km SMF transmission experiment.en621conference paper