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Phase regeneration of DPSK signals in a silicon waveguide with reverse-biased p-i-n junction.

Authors
  • Da Ros, Francesco
  • Vukovic, Dragana
  • Gajda, Andrzej
  • Dalgaard, Kjeld
  • Zimmermann, Lars
  • Tillack, Bernd
  • Galili, Michael
  • Petermann, Klaus
  • Peucheret, Christophe
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Mar 10, 2014
Volume
22
Issue
5
Pages
5029–5036
Identifiers
DOI: 10.1364/OE.22.005029
PMID: 24663841
Source
Medline
License
Unknown

Abstract

Phase regeneration of differential phase-shift keying (DPSK) signals is demonstrated using a silicon waveguide as nonlinear medium for the first time. A p-i-n junction across the waveguide enables decreasing the nonlinear losses introduced by free-carrier absorption (FCA), thus allowing phase-sensitive extinction ratios as high as 20 dB to be reached under continuous-wave (CW) pumping operation. Furthermore the regeneration properties are investigated under dynamic operation for a 10-Gb/s DPSK signal degraded by phase noise, showing receiver sensitivity improvements above 14 dB. Different phase noise frequencies and amplitudes are examined, resulting in an improvement of the performance of the regenerated signal in all the considered cases.

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