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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6268–6278

Microcavities based on multimodal interference

Björn Maes, Mihai Ibanescu, John D. Joannopoulos, Peter Bienstman, and Roel Baets  »View Author Affiliations


Optics Express, Vol. 15, Issue 10, pp. 6268-6278 (2007)
http://dx.doi.org/10.1364/OE.15.006268


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Abstract

We describe intricate cavity mode structures, that are possible in waveguide devices with two or more guided modes. The main element is interference between the scattered fields of two modes at the facets, resulting in multipole or mode cancelations. Therefore, strong coupling between the modes, such as around zero group velocity points, is advantageous to obtain high quality factors. We discuss the mechanism in three different settings: a cylindrical structure with and without negative group velocity mode, and a surface plasmon device. A general semi-analytical expression for the cavity parameters describes the phenomenon, and it is validated with extensive numerical calculations.

© 2007 Optical Society of America

OCIS Codes
(230.5750) Optical devices : Resonators
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optical Devices

History
Original Manuscript: February 28, 2007
Manuscript Accepted: March 22, 2007
Published: May 7, 2007

Citation
Bjørn Maes, Mihai Ibanescu, John D. Joannopoulos, Peter Bienstman, and Roel Baets, "Microcavities based on multimodal interference," Opt. Express 15, 6268-6278 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-10-6268


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References

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  8. A. Karalis, E. Lidorikis, M. Ibanescu, J.D. Joannopoulos, and M. Soljacic, "Surface-plasmon-assisted guiding of broadband slow and subwavelength light in air," Phys. Rev. Lett. 95,063901 (2005). [CrossRef] [PubMed]
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