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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 2 — Jan. 18, 2010
  • pp: 1450–1461

All-optical switching in silicon-on-insulator photonic wire nano–cavities

Michele Belotti, Matteo Galli, Dario Gerace, Lucio Claudio Andreani, Giorgio Guizzetti, Ahmad R. Md Zain, Nigel P. Johnson, Marc Sorel, and Richard M. De La Rue  »View Author Affiliations

Optics Express, Vol. 18, Issue 2, pp. 1450-1461 (2010)

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We report on experimental demonstration of all-optical switching in a silicon-on-insulator photonic wire nanocavity operating at telecom wavelengths. The switching is performed with a control pulse energy as low as ~ 0.1 pJ on a cavity device that presents very high signal transmission, an ultra-high quality-factor, almost diffraction-limited modal volume and a footprint of only 5 μm2. High-speed modulation of the cavity mode is achieved by means of optical injection of free carriers using a nanosecond pulsed laser. Experimental results are interpreted by means of finite-difference time-domain simulations. The possibility of using this device as a logic gate is also demonstrated.

© 2010 Optical Society of America

OCIS Codes
(130.3750) Integrated optics : Optical logic devices
(230.1150) Optical devices : All-optical devices
(230.5750) Optical devices : Resonators
(130.4815) Integrated optics : Optical switching devices
(130.5296) Integrated optics : Photonic crystal waveguides
(230.5298) Optical devices : Photonic crystals

ToC Category:
Integrated Optics

Original Manuscript: November 6, 2009
Revised Manuscript: December 14, 2009
Manuscript Accepted: December 14, 2009
Published: January 12, 2010

Michele Belotti, Matteo Galli, Dario Gerace, Lucio C. Andreani, Giorgio Guizzetti, Ahmad R. Md Zain, Nigel P. Johnson, Marc Sorel, and Richard M. De La Rue, "All-optical switching in silicon-on-insulator photonic wire nano-cavities," Opt. Express 18, 1450-1461 (2010)

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