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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 8 — Apr. 13, 2009
  • pp: 5953–5964

Circular Grating Resonators as Small Mode-Volume Microcavities for Switching

Sophie Schönenberger, Nikolaj Moll, Thilo Stöferle, Rainer F. Mahrt, Bert J. Offrein, Stephan Götzinger, Vahid Sandoghdar, Jens Bolten, Thorsten Wahlbrink, Tobias Plötzing, Michael Waldow, and Michael Först  »View Author Affiliations

Optics Express, Vol. 17, Issue 8, pp. 5953-5964 (2009)

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We demonstrate the suitability of microcavities based on circular grating resonators (CGRs) as fast switches. This type of optical resonator is characterized by a high quality factor and very small mode volume. The waveguide-coupled CGRs are fabricated with silicon-on-insulator technology compatible with standard complementary metal-oxide semiconductor (CMOS) processing. The linear optical properties of the CGRs are investigated by transmission spectroscopy. From 3D finite-difference time-domain simulations of isolated CGRs, we identify the measured resonances. We probe the spatial distribution and the parasitic losses of a resonant optical mode with scanning near-field optical microscopy. We observe fast all-optical switching within a few picoseconds by optically generating free charge carriers within the cavity.

© 2009 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(230.1150) Optical devices : All-optical devices
(230.5750) Optical devices : Resonators
(130.4815) Integrated optics : Optical switching devices

ToC Category:
Integrated Optics

Original Manuscript: January 23, 2009
Revised Manuscript: March 18, 2009
Manuscript Accepted: March 18, 2009
Published: March 30, 2009

Sophie Schönenberger, Nikolaj Moll, Thilo Stöferle, Rainer F. Mahrt, Bert J. Offrein, Stephan Götzinger, Vahid Sandoghdar, Jens Bolten, Thorsten Wahlbrink, Tobias Plötzing, Michael Waldow, and Michael Först, "Circular Grating Resonators as Small Mode-Volume Microcavities for Switching," Opt. Express 17, 5953-5964 (2009)

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