All-optical RZ to NRZ data format and wavelength conversion using an injection locked laser

Chi-Wai Chow*, C. S. Wong, H. K. Tsang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

All-optical RZ-to-NRZ data format conversion using a repetition-rate doubler and an injection-locked Fabry-Perot laser diode is demonstrated at 10 Gb/s. Conversion of signal wavelength is achieved simutaneouly. At a bit-error-rate of 10-9, a power penalty of 2.5 dB was observed in the format conversion. The spectral width of the data-format converted NRZ signal (14 GHz) was reduced compared with the input RZ signal (25 GHz), making the converted signal more spectrally efficient for use in dense-wavelength-division-multiplexed (DWDM) access networks. We also describe numerical analysis which indicates the optimum delay in the repetition-rate doubler for format conversion.

Original languageEnglish
Pages (from-to)309-313
Number of pages5
JournalOptics Communications
Volume223
Issue number4-6
DOIs
StatePublished - 1 Aug 2003

Keywords

  • Format conversion
  • Injection-locked laser
  • Wavelength conversion
  • WDM communications

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