Investigation of duobinary modulation implementations for use in wavelength switched networks

John A. O'Dowd, Selwan K. Ibrahim, Vivian Bessler, Andrew D. Ellis

    Research output: Chapter in Book/Published conference outputConference publication

    Abstract

    We investigate the use of different duobinary modulation implementations in a wavelength-switched network operating at 10 Gb/s. The work specifically focuses on two methods of generating duobinary: phase shaped binary transmission (PSBT) which uses both a phase modulator and a Mach-Zehnder modulator (MZM) and enhanced PSBT (EPSBT) which uses two MZM's. We evaluate the benefit associated with modifying the extinction ratios of both implementations in order to optimise the signal for either short- (low back-to-back penalty) or long-distance transmission (good dispersion tolerance). The tolerance of these implementations to impairments associated with the settling of tunable lasers < 200 ns after switching (such as wavelength error and linewidth broadening) are also investigated and the associated penalties are found numerically.

    Original languageEnglish
    Title of host publication2010 12th International Conference on Transparent Optical Networks, ICTON 2010
    PublisherIEEE
    ISBN (Print)9781424477975
    DOIs
    Publication statusPublished - 6 Oct 2010
    Event2010 12th International Conference on Transparent Optical Networks, ICTON 2010 - Munich, Germany
    Duration: 27 Jun 20101 Jul 2010

    Publication series

    Name2010 12th International Conference on Transparent Optical Networks, ICTON 2010

    Conference

    Conference2010 12th International Conference on Transparent Optical Networks, ICTON 2010
    Country/TerritoryGermany
    CityMunich
    Period27/06/101/07/10

    Keywords

    • Dispersion tolerance
    • Duobinary
    • Wavelength switched networks

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