title: Experimental investigation of 84-Gb/s and 112-Gb/s polarization-switched quadrature phase-shift keying signals.
abstract: We experimentally investigate 28-GBd (84-Gb/s) and 37.3-GBd (112-Gb/s) polarization-switched quadrature phase-shift keying (PS-QPSK) signals. In single-channel transmission experiments over up to 12500 km ultra large effective area fiber, we compare their performance to that of polarization-division multiplexing quadrature phase-shift keying (PDM-QPSK) signals at the same bit rates. The experimental results show that PS-QPSK not only benefits from its better sensitivity but also offers an increased tolerance to intra-channel nonlinearities.
authors.affiliation: Fraunhofer Institute for Telecommunications Heinrich Hertz Institute, Department Photonic Networks and Systems, Einsteinufer 37, 10587 Berlin, Germany. johannes.fischer@hhi.fraunhofer.de
authors.forename: Johannes Karl
authors.initials: JK
authors.lastname: Fischer
authors.forename: Lutz
authors.initials: L
authors.lastname: Molle
authors.forename: Markus
authors.initials: M
authors.lastname: Nölle
authors.forename: Dirk-Daniel
authors.initials: DD
authors.lastname: Gross
authors.forename: Carsten
authors.initials: C
authors.lastname: Schmidt-Langhorst
authors.forename: Colja
authors.initials: C
authors.lastname: Schubert