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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 9 — Apr. 23, 2012
  • pp: 9403–9408

Nonlinear couplers with tapered plasmonic waveguides

José R. Salgueiro and Yuri S. Kivshar  »View Author Affiliations


Optics Express, Vol. 20, Issue 9, pp. 9403-9408 (2012)
http://dx.doi.org/10.1364/OE.20.009403


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Abstract

We suggest and demonstrate numerically that, by employing tapered waveguides in the geometry of a directional coupler, we can enhance dramatically the performance for optical switching of nonlinear plasmonic couplers operating at the nanoscale, overcoming the detrimental losses but preserving the subwavelength confinement. We demonstrate that, by an appropriate choice of the taper angle of the coupled metal-dielectric slot waveguides, we can compensate for the amplitude decrease and enhance the sharpness of the response for the switching operation.

© 2012 OSA

OCIS Codes
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(130.4815) Integrated optics : Optical switching devices

ToC Category:
Nonlinear Optics

History
Original Manuscript: February 7, 2012
Revised Manuscript: March 21, 2012
Manuscript Accepted: April 2, 2012
Published: April 9, 2012

Citation
José R. Salgueiro and Yuri S. Kivshar, "Nonlinear couplers with tapered plasmonic waveguides," Opt. Express 20, 9403-9408 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-9-9403


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