1.28-Tb/s (32 × 40 Gb/s) Free-Space Optical WDM Transmission System

E. Ciaramella, Y. Arimoto, G. Contestabile, M. Presi, A. D'Errico, V. Guarino, M. Matsumoto

Research output: Contribution to journalArticle

44 Citations (Scopus)


We successfully transmitted a 1.28-Tb/s (32 × 40 Gb/s) wavelength-division-multiplexed (WDM) signal over a free-space optic (FSO) link, for the first time. We used a novel pair of FSO terminals, transparently connected to optical fibers, to transmit/receive the WDM channels over a double-pass FSO path between two buildings (2 × 210 m). Limited penalty on all 40-Gb/s channels and high stability was observed. Furthermore, long-term measurements of the system performance indicate a high improvement in reliability, which makes it a promising alternative for future deployment.

Original languageEnglish
Pages (from-to)1121-1123
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number16
Publication statusPublished - 2009 Aug 15


  • Free-space optics (FSO)
  • Optical communications
  • Wavelength-division mutiplexing (WDM)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials

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    Ciaramella, E., Arimoto, Y., Contestabile, G., Presi, M., D'Errico, A., Guarino, V., & Matsumoto, M. (2009). 1.28-Tb/s (32 × 40 Gb/s) Free-Space Optical WDM Transmission System. IEEE Photonics Technology Letters, 21(16), 1121-1123. https://doi.org/10.1109/LPT.2009.2021149