Polarization-insensitive all-optical wavelength conversion of 320 Gb/s RZ-DQPSK signals using a Ti:PPLN waveguide

Publication: Research - peer-reviewJournal article – Annual report year: 2010

  • Author: Hu, Hao

    High-Speed Optical Communication, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, 2800, Kgs. Lyngby, Denmark

  • Author: Nouroozi, R.

    University of Paderborn, Faculty of Science

  • Author: Ludwig, R.

    Heinrich-Hertz-Institut, Fraunhofer Institute for Telecommunications

  • Author: Huettl, B.

    Heinrich-Hertz-Institut, Fraunhofer Institute for Telecommunications

  • Author: Schmidt-Langhorst, C.

    Heinrich-Hertz-Institut, Fraunhofer Institute for Telecommunications

  • Author: Suche, H.

    University of Paderborn, Faculty of Science

  • Author: Sohler, W.

    University of Paderborn, Faculty of Science

  • Author: Schubert, C.

    Heinrich-Hertz-Institut, Fraunhofer Institute for Telecommunications

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Polarization-insensitive wavelength conversion of a single channel 320 Gb/s RZ-DQPSK data signal using a Ti:PPLN waveguide in a bi-directional loop configuration with less than 0.5 dB polarization sensitivity is reported. The conversion efficiency with polarization scrambling of the signal was -21 dB, which includes 9.2 dB of passive losses in the whole Ti:PPLN subsystem. In BER measurements error-free operation with 2 dB OSNR penalty for the converted signal was achieved. Theoretical and experimental investigations of the temporal shape and chirp of the converted data pulses show only very little broadening and chirping, indicating the potential for wavelength conversion of even much higher data rates.
Original languageEnglish
JournalApplied Physics B
Publication date2010
Volume101
Journal number4
Pages875-882
ISSN0946-2171
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 15
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