Applications of nonlinear effects in silicon wire waveguides - All optical modulation, wavelength conversion and quantum entanglement

K. Yamada, T. Tsuchizawa, T. Watanabe, H. Fukuda, H. Shinojima, H. Nishi, H. Takesue, T. Tanabe, A. Shinya, E. Kuramochi, M. Notomi, Y. Tokura, S. Itabashi

Research output: Contribution to journalConference article

Abstract

We demonstrate efficient nonlinear functions using silicon nanophotonic structures. In the ultrasmall core of the waveguides and cavities, nonlinear phenomena are significantly enhanced. Applying the two-photon absorption effect, we have confirmed all optical modulation, in which the modulation speed is improved to around 50 ps by eliminating free carriers. Applying the four-wave-mixing effect, we have achieved high-efficiency wavelength conversion. The conversion efficiency is -11 dB, and the efficiency will be further improved by eliminating free carriers. Using the fourwave-mixing effect, we have also realized a low-noise entangled photon pair source. The source does not need a refrigeration system for noise reduction, which is a great advantage for practical application.

Original languageEnglish
Article number71341R
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7134
DOIs
Publication statusPublished - 2008 Dec 1
Externally publishedYes
EventPassive Components and Fiber-based Devices V - Hangzhou, China
Duration: 2008 Oct 272008 Oct 30

Keywords

  • All optical modulation
  • Entangled photon generation
  • Optical nonlinearity
  • Photonic crystal cavity
  • Silicon photonics
  • Silicon wire waveguide
  • Wavelength conversion

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Yamada, K., Tsuchizawa, T., Watanabe, T., Fukuda, H., Shinojima, H., Nishi, H., Takesue, H., Tanabe, T., Shinya, A., Kuramochi, E., Notomi, M., Tokura, Y., & Itabashi, S. (2008). Applications of nonlinear effects in silicon wire waveguides - All optical modulation, wavelength conversion and quantum entanglement. Proceedings of SPIE - The International Society for Optical Engineering, 7134, [71341R]. https://doi.org/10.1117/12.803760