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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 21 — Nov. 1, 2007
  • pp: 3086–3088

Plasmon mode transformation in modulated-index metal-dielectric slot waveguides

Ning-Ning Feng and Luca Dal Negro  »View Author Affiliations


Optics Letters, Vol. 32, Issue 21, pp. 3086-3088 (2007)
http://dx.doi.org/10.1364/OL.32.003086


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Abstract

The concept of adiabatic mode transformation between silicon waveguide and surface plasmon-polariton modes in subwavelength metal-dielectric slots is investigated. The mode transformer consists of a modulated-index slot region, which is bound by two metal slabs. Using the design scheme, we will show that the optical dispersion of a modulated-index metal slot waveguide can be engineered well above the silicon light-line on a large wavelength region, allowing direct phase-matching between surface plasmon polaritons and traditional waveguide modes. Based on full-field, finite difference simulations, we demonstrate that reversible mode conversion can be achieved within submicrometer length scales.

© 2007 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Integrated Optics

History
Original Manuscript: May 31, 2007
Revised Manuscript: September 5, 2007
Manuscript Accepted: September 9, 2007
Published: October 18, 2007

Citation
Ning-Ning Feng and Luca Dal Negro, "Plasmon mode transformation in modulated-index metal-dielectric slot waveguides," Opt. Lett. 32, 3086-3088 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-21-3086


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