Ultrahigh-speed OTDM transmission beyond 1 tera bit-per-second using a femtosecond pulse train

Masataka Nakazawa, Takashi Yamamoto, Koichi Robert Tamura

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Progress on a single wavelength channel OTDM terabit/s transmission is described. In particular, we focus on 1.28 Tbit/s OTDM transmission over 70 km which we realized recently. A pre-chirping technique using a high speed phase modulator is emphasized to simultaneously compensate for third- and fourth-order dispersion. The input pulse width was 380 fs, and the pulse broadening after a 70 km transmission was as small as 20 fs. All 128 channels time-division-demultiplexed to 10 Gbit/s had a bit error rate of less than 1 × 10-9, in which we employed a lot of new technique for pulse generation, dispersion compensation and demultiplexing. These techniques help pave the path for OTDM technology of the 21 century.

Original languageEnglish
Pages (from-to)117-125
Number of pages9
JournalIEICE Transactions on Electronics
Issue number1 SPEC.
Publication statusPublished - 2002 Jan


  • Femtosecond pulse generation
  • Mode-locked lasers
  • NOLM
  • OTDM transmission
  • Pulse compression

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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