All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter

Lei Xu, Bing C. Wang, Varghese Baby, Ivan Glesk, Paul R. Prucnal

Research output: Contribution to journalArticle

140 Citations (Scopus)

Abstract

We demonstrate all-optical conversion between two different data formats: return-to-zero (RZ) and nonreturn-to-zero (NRZ) using a Mach-Zehnder interferometric wavelength converter. For RZ-to-NRZ conversion, a duplication scheme is demonstrated to reduce the ripples caused by the carrier recovery of the semiconductor optical amplifier. The relationship between the ripple-to-signal ratio and the number of pulse duplications is numerically analyzed. For the NRZ-to-RZ conversion, the wavelength converter also shows high performance. The converted RZ signal has a negative power penalty to the NRZ signal due to the change of the data format.

Original languageEnglish
Pages (from-to)308-310
Number of pages3
JournalIEEE Photonics Technology Letters
Volume15
Issue number2
Early online date29 Jan 2003
DOIs
Publication statusPublished - Feb 2003

Keywords

  • Mach-Zehnder interferometers
  • optical pulse compression
  • optical fibre networks
  • optical wavelength conversion
  • optical amplifiers
  • semiconductors

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