High-speed optical FSK modulator for optical packet labeling

Tetsuya Kawanishi*, Kaoru Higuma, Takahisa Fujita, Junichiro Ichikawa, Takahide Sakamoto, Satoshi Shinada, Masayuki Izutsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)


We described a novel optical label swapping (OLS) technique for optical packet systems using frequency-shift-keying (FSK) opfical labeling. High-speed optical FSK signal can be generated by using an external FSK modulator consisting of four optical phase modulators. The FSK modulator was based on optical single sideband (SSB) modulation technique, and comprised of traveling-wave electrodes for high-speed frequency switching. We demonstrate 10 Gbps FSK transmission, and simultaneous modulation by FSK and intensity modulation (IM). OLS using double-sideband modulation was also demonstrated, where this technique can be used for a bundled wavelength-domain-multiplexing (WDM) channels without using an array of pumping light sources.

Original languageEnglish
Pages (from-to)87-94
Number of pages8
JournalJournal of Lightwave Technology
Issue number1
Publication statusPublished - 2005 Jan
Externally publishedYes


  • Frequency-shift-keying
  • Label swap
  • Optical modulator
  • Optical packet

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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