Operational design on high-speed semiconductor optical amplifier with assist light for application to wavelength converters using cross-phase modulation

Atsushi Matsumoto, Kohsuke Nishimura, Katsuyuki Utaka, Masashi Usami

Research output: Contribution to journalArticle

36 Citations (Scopus)


Using the newly developed time-dependent transfer matrix method with nonlinear effects, we analyzed the characteristics of cross-phase modulation (XPM), cross-gain modulation and gain recovery time of a semiconductor optical amplifier (SOA) with an assist light injection, which is Introduced to speed up the gain recovery of the SOA. Particularly for the application to high-speed wavelength converters using XPM with an interferometer structure where π-phase change is required, various parameters such as SOA lengths, wavelengths and powers of injected lights, and their propagation directions are designed via numerical simulation. Discussions concerning the conditions of an SOA structure and the parameters of injected lights for high-speed operation are described to show the potential of fast gain recovery with a response time as low as 25 ps.

Original languageEnglish
Article number01597418
Pages (from-to)313-323
Number of pages11
JournalIEEE Journal of Quantum Electronics
Issue number3
Publication statusPublished - 2006 Mar 1



  • Cross gain modulation (xgm)
  • Cross phase modulation (xpm)
  • Gain recovery
  • Nonlinearity
  • Semiconductor optical amplifier (soa)
  • Transfer matrix method (tmm) analysis
  • Wavelength converter

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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