All-optical serial-to-parallel conversion of T-bits/s signals using a four-wave-mixing process

K. Ema, J. Ishi, H. Kunugita, T. Ban, T. Kondo

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


We report a simple method of a serial-to-parallel conversion that does not use a Fourier-transform system. The method is based on directly picking up a narrow temporal range of the skewed input signal by using a nonlinear wave mixing with the reference pulse. We show theoretically that the pick-up method is less influenced by the relaxation times of the nonlinear material. We demonstrate our method experimentally using a self-organized quantum-well material, and confirm that T-bits/s pulses are clearly converted into spatial patterns with conversion rates of 140 GHz.

Original languageEnglish
Pages (from-to)1077-1087
Number of pages11
JournalOptical and Quantum Electronics
Issue number7-10
Publication statusPublished - 2001 Jul
Externally publishedYes


  • Four-wave-mixing process
  • Self-organized quantum-well material
  • Serial-to-parallel conversion

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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