Wang, J.J.WangKroh, M.M.KrohRichter, T.T.RichterTheurer, A.A.TheurerMatiss, A.A.MatissZawadzki, C.C.ZawadzkiZhang, Z.Y.Z.Y.ZhangSchubert, C.C.SchubertSteffan, A.A.SteffanGrote, N.N.GroteKeil, N.N.Keil2022-03-042022-03-042012https://publica.fraunhofer.de/handle/publica/23013110.1109/LPT.2012.2213299A dual-polarization coherent receiver using polymer planar lightwave circuit technology is demonstrated for the first time. It comprises optical 90 hybrids on the basis of polymer waveguides, polarization beam-splitting thin-film elements, and photodetectors made of InGaAsP/InP. The chip size fits into the existing receiver package standards. The receiver assembly shows a high polarization extinction ratio (>25 dB over C-band) and is successfully operated in system experiments with 16-quadrature-amplitude modulation and quadrature phase-shift keying modulation up to 112 Gb/s.en621535journal article