16 DWDM channels optoelectronic 3R NRZ-to-RZ regenerative format conversions based on single phase modulator

Y. Yu, J. B. Rosas-Fernández, X. Zhang, D. Huang, R. V. Penty, I. H. White

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


We propose and demonstrate simultaneous multiple dense wavelength division multiplexing (DWDM) channels optoelectronic non-return-to-zero (NRZ) to return-to-zero (RZ) regenerative format conversions based on a single phase modulator (PM) and a fibre delay-interferometer (DI). The PM is driven by a local RF clock signal, and the DI with free spectral range (FSR) equals to the channel spacing is used to extract the chirps induced by the phase modulation, for all the channels at the same time. Since the original carriers are suppressed to some extent while the chirps are extracted, thus the NRZ-to-RZ conversions can be achieved with regeneration. The proposed multi-channels format conversions are successfully demonstrated at 16*10 Gb/s, with channel spacing of 100GHz. Bit error ratio (BER) measurements show 3.5 and 4.2 dB penalty improvements for 50 and 75 km transmission without dispersion compensation, respectively.

Original languageEnglish
Title of host publicationOptical Transmission, Switching and Subsystems VI
Place of PublicationU. S. A.
Publication statusPublished - 1 Dec 2008
EventOptical Transmission, Switching, and Subsystems VI - Hangzhou, China
Duration: 27 Oct 200830 Oct 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering


ConferenceOptical Transmission, Switching, and Subsystems VI


  • Fibre delay- Interferometer
  • Format conversion
  • Multi-channel
  • Non-return-to-zero (NRZ)
  • Phase modulator
  • Return-to-zero (RZ)

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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