5 Gbit/s, 250 km Error-Free Soliton Transmission with Er3+-Doped Fibre Amplifiers and Repeaters

K. Suzuki, M. Nakazawa, E. Yamada, Y. Kimura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Error-free solition transmission at a bit rate of 5 Gbit/s over 250 km has been accomplished. The transform-limited soliton pulse source is a gain-switched DFB laser diode with a narrow-band spectral filter and Er amplifiers. A LiNbO3 light intensity modulator is used for pulse switching. A new 'pre-emphasis technique' for sending solitons over a longdistance is used, in which an Er3+-doped fibre amplifier is installed every 25 km as a lumped amplifier.

Original languageEnglish
Pages (from-to)551-553
Number of pages3
JournalElectronics Letters
Issue number8
Publication statusPublished - 1990 Jan 1
Externally publishedYes


  • Optical communications
  • Repeaters

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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