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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

63 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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