Hachmeister, A.A.HachmeisterNölle, M.M.NölleMolle, L.L.MolleFreund, R.R.FreundRohde, M.M.Rohde2022-03-042022-03-042012https://publica.fraunhofer.de/handle/publica/22882810.1364/OE.20.003877We performed long-haul WDM transmission experiments to compare 10 Gbit/s MSK and QPSK modulation with a channel grid of 12.5 GHz. A standard link setup with inline dispersion compensation was applied in combination with coherent detection and following offline signal processing. Both modulation formats showed nearly equal performance bridging about 4000 km at a BER of 10 -3.en621journal article