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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 19 — Oct. 1, 2005
  • pp: 2575–2577

Fast bistable all-optical switch and memory on a silicon photonic crystal on-chip

Takasumi Tanabe, Masaya Notomi, Satoshi Mitsugi, Akihiko Shinya, and Eiichi Kuramochi  »View Author Affiliations

Optics Letters, Vol. 30, Issue 19, pp. 2575-2577 (2005)

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We demonstrate extremely low-power all-optical bistability by utilizing silicon photonic crystal nanocavities, based on the plasma effect of carriers generated by two-photon absorption. Owing to the high quality factor and the small volume of the nanocavities, the photon density inside the cavity becomes extremely high, which leads to a large reduction in operation power. Optical bistable operation in a single nanocavity permits optical read-write memory operation, which opens the possibility of an integrated optical logic circuit on a single chip, based on photonic crystals. The demonstrated bistable threshold power is 0.4 mW with a set pulse energy of 74 fJ, at a switching speed of <100 ps.

© 2005 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(190.1450) Nonlinear optics : Bistability

ToC Category:
Integrated Optics

Takasumi Tanabe, Masaya Notomi, Satoshi Mitsugi, Akihiko Shinya, and Eiichi Kuramochi, "Fast bistable all-optical switch and memory on a silicon photonic crystal on-chip," Opt. Lett. 30, 2575-2577 (2005)

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