P. Serena, A. Vannucci, and A. Bononi, “The performance of polarization switched-QPSK (PS-QPSK) in dispersion managed WDM transmission,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper Th.10.E.2.
F. Xiong, “Digital Modulation Techniques,” Artech House Inc, 2006.
M. Salsi, H. Mardoyan, P. Tran, C. Koebele, E. Dutisseuil, G. Charlet, and S. Bigo, “155×100Gbit/s coherent PDM-QPSK transmission over 7,200km,” in Proc. 35th Eur. Conf. Opt. Commun., Sept. 2009, paper PD2.5.
E. Torrengo, R. Cigliutti, G. Bosco, and G. Gavioli, A. Alaimo A. Carena, V. Curri, F. Forghieri, S. Piciaccia, M. Belmonte, A. Brinciotti, A. L. Porta, S. Abrate, and P. Poggiolini, “Transoceanic PM-QPSK Terabit superchannel transmission experiments at Baud-rate subcarrier spacing,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper We.7.C.2.
M. Salsi, C. Koebele, P. Tran, H. Mardoyan, S. Bigo, and G. Charlet, “80×100-Gbit/s transmission over 9,000km using erbium-doped fibre repeaters only,” in Proc. 36th Eur. Conf. Opt. Commun., Sept. 2010, paper We.7.C.3.
H. Bülow, “Polarization QAM (POL-QAM) for coherent detection schemes,” in Proc. Opt. Fiber Commun. Conf., Mar. 2009, paper OWG2.
J. K. Fischer and L. Molle, M, Nölle, D.-D. Groß, and C. Schubert, “Experimental Investigation of 28-GBd Polarization-Switched Quadrature Phase-Shift Keying Signals,“ in Proc. 37th Eur. Conf. Opt. Commun., Sept. 2011, paper Mo.2.B.1.