All-optical switch and digital light processing using photonic crystals

Akihiko Shinya, Takasumi Tanabe, Eiichi Kuramochi, Masaya Notomi

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


We have demonstrated all-optical switching operations by coupled resonator-waveguide systems in two-dimensional Si-based photonic crystals. These systems operate at extremely low power and with a very high switching speed compared with conventional devices using the same nonlinear mechanism due to title use of an ultrasmall resonator with a high quality factor. We also describe an all-optical sequential circuit composed of two resonant tunneling filters. Using a two-dimensional FDTD (finite-difference time-domain) calculation, we numerically demonstrate that an optical digital circuit can synchronize input data with its clock.

Original languageEnglish
Pages (from-to)61-68
Number of pages8
JournalNTT Technical Review
Issue number12
Publication statusPublished - 2005 Dec
Externally publishedYes

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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