Bidirectional WDM-DPSK transmission by using SOAs

A. D'Errico, R. Proietti, N. Calabretta, G. Contestabile, E. Ciaramella

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)


We demonstrate the longest bidirectional and unrepeatered semiconductor optical amplifier (SOA)-based transmission of 16 differential phase-shift keying (DPSK), 100-GHz-spaced channels at 10 Gb/s over standard single-mode fiber. Key techniques are: the use of DPSK constant-envelope modulation format to prevent nonlinear distortions in the SOAs; a new type of wavelength-division-multiplexing-DSPK demodulator to strongly enhance the signal tolerance to chromatic dispersion. After 120-km transmission, 1.8- to 3-dB power penalty was found for the 16 channels.

Original languageEnglish
Pages (from-to)1762-1764
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number16
Publication statusPublished - 15 Aug 2006
Externally publishedYes


  • Optical communications
  • Optical differential phase-shift keying (DPSK)
  • Semiconductor optical amplifiers (SOAs)
  • Wavelength-division-multiplexing (WDM) systems


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