Carrier phase estimation for coherent equalization of 43-Gb/s POLMUXNRZ- DQPSK transmission with 10.7-Gb/s NRZ neighbours

Conference: ECOC 2007 - 33rd European Conference and Exhibition of Optical Communication
09/16/2007 - 09/20/2007 at Berlin, Germany

Proceedings: ECOC 2007

Pages: 2Language: englishTyp: PDF

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Borne, D. van den; Khoe, G. D.; Waardt, H. de (COBRA institute, Eindhoven University of Technology, The Netherlands)
Fludger, C. R. S.; Duthel, T.; Schulien, C. (CoreOptics GmbH, Nuernberg, Germany)
Wuth, T. (Siemens PSE GmbH & Co. KG, Munich, Germany)
Schmidt, E. D.; Gottwald, E. (Nokia Siemens Networks GmbH & Co. KG, Munich, Germany)

We show the influence of 10.7-Gb/s NRZ neighbors on 43-Gb/s polarization-multiplexed NRZ-DQPSK transmission combined with digital coherent equalization. The impact of XPM induced phase noise is reduced with an optimized carrier phase estimation (CPE) algorithm.