40 Gb/s NRZ-DQPSK data all-optical wavelength conversion using four wave mixing in SOA

Lukasz Krzczanowicz, Michael Connelly

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

DQPSK modulation has become particularly attractive in high-speed optical communications because of its resistance to fiber nonlinearities and its more efficient use of fiber bandwidth. Because of its wavelength conversion ability, SOA four wave mixing effect has attracted much attention. We experimentally study the FWM wavelength conversion of 40 Gbit/s (20 Gbaud) NRZ-DQPSK data. A bulk SOA with 21 dB gain and 10 dBm output saturation power is used. The Q factors of the input and wavelength converted signal are measured. Some signal regeneration properties are shown. A Q-factor improvement of maximum 1.7 dB is observed. The authors make an attempt at recreating the experiment with a prototype Quantum Dot SOA. FWM efficiency of a QD-SOA with 15 dB fiber-to-fiber gain and 3 dBm output saturation power is measured.

Original languageEnglish
Title of host publicationIET Conference Publications
PublisherInstitution of Engineering and Technology
Pages349-351
Number of pages3
EditionCP639
ISBN (Print)9781849199247
DOIs
Publication statusPublished - 2014
Event25th IET Irish Signals and Systems Conference, ISSC 2014 and China-Ireland International Conference on Information and Communications Technologies, CIICT 2014 - Limerick, Ireland
Duration: 26 Jun 201427 Jun 2014

Publication series

NameIET Conference Publications
NumberCP639
Volume2014

Conference

Conference25th IET Irish Signals and Systems Conference, ISSC 2014 and China-Ireland International Conference on Information and Communications Technologies, CIICT 2014
Country/TerritoryIreland
CityLimerick
Period26/06/1427/06/14

Keywords

  • All-optical regeneration
  • Differential phase-shift keying (DPSK)
  • Four wave mixing (FWM)
  • Semiconductor optical amplifiers (SOAs)

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