Fischer, J.K.J.K.FischerAlreesh, S.S.AlreeshElschner, R.R.ElschnerFrey, F.F.FreyMeuer, C.C.MeuerMolle, L.L.MolleSchmidt-Langhorst, C.C.Schmidt-LanghorstTanimura, T.T.TanimuraSchubert, C.C.Schubert2022-03-042022-03-042012https://publica.fraunhofer.de/handle/publica/23114610.1364/OE.20.00B2322-s2.0-84871206949We experimentally generate 28-GBd 6-ary polarization-shift keying quadrature phase-shift keying (6PolSK-QPSK) signals by utilizing a high-speed 4-channel digital-to-analog converter and an integrated dualpolarization I/Q modulator. In WDM transmission experiments over up to 4800 km standard single-mode fiber, we compare the performance of 126- Gb/s 6PolSK-QPSK and 112-Gb/s polarization-division multiplexing (PDM) QPSK signals. Furthermore, we discuss the implications of applying an inner Reed-Solomon RS(511,455) forward error correction code in order to correct burst errors due to the anti-Gray mapping of 6PolSK-QPSK.en621621journal article