Realtime 40 krad/s Polarization Tracking with 6 dB PDL in Digital Synchronous Polarization-Multiplexed QPSK Receiver
M. El-Darawy, T. Pfau, C. Woerdehoff, B. Koch, S. Hoffmann, R. Peveling, M. Porrmann, R. Noé, in: 2008 34TH EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC), 2008.