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
CountryGermany
CityMunich
Period27/06/101/07/10

Keywords

  • Dispersion tolerance
  • Duobinary
  • Wavelength switched networks

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