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Proceedings Paper

All-optical switches and bistable devices using high-Q photonic crystal nanocavities
Author(s): Takasumi Tanabe; Akihiko Shinya; Eiichi Kuramochi; Hideaki Taniyama; Masaya Notomi
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Paper Abstract

We review our recent progress on all-optical switching and bistability using ultrahigh-Q photonic crystal nanocavities. We also discuss all-optical logic gate operations. Because photonic crystal nanocavities can strongly confine photons in a small area for a long time, light can efficiently interact with dipoles. As a result, optical nonlinearities occur at a very low input. Optical nonlinearities are essential as regards all-optical switching and bistability, because they dynamically change such material properties as refractive index. We demonstrate all-optical switching at an operating energy of less than 100 fJ, and bistable operation at less than ~100 μW. In addition, these devices are small and so can operate at a reasonably high speed (~100 ps).

Paper Details

Date Published: 10 February 2009
PDF: 13 pages
Proc. SPIE 7219, Optoelectronic Integrated Circuits XI, 72190H (10 February 2009);
Show Author Affiliations
Takasumi Tanabe, NTT Corp. (Japan)
Akihiko Shinya, NTT Corp. (Japan)
Eiichi Kuramochi, NTT Corp. (Japan)
Hideaki Taniyama, NTT Corp. (Japan)
Masaya Notomi, NTT Corp. (Japan)

Published in SPIE Proceedings Vol. 7219:
Optoelectronic Integrated Circuits XI
Louay A. Eldada; El-Hang Lee, Editor(s)

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