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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 14 — Jul. 15, 2012
  • pp: 2934–2936

Two-dimensional light confinement in cross-index-modulation plasmonic waveguides

Ran Hao, Erping Li, and Xingchang Wei  »View Author Affiliations


Optics Letters, Vol. 37, Issue 14, pp. 2934-2936 (2012)
http://dx.doi.org/10.1364/OL.37.002934


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Abstract

We report a numerical study of plasmonic waveguides that localize light in two dimensions at a cross section of 4.2nm×2.1nm with the propagation length of 38 μm. By varying the geometrical parameters, strong mode confinements (range from λ2/3352 to λ2/2557525) are achieved with controllable propagation distance (44.68–40.988 μm), and mode size below 1nm2 has been demonstrated for the first time. Furthermore, a cross-index-modulation mechanism is proposed to explain the strong field localization behavior, providing guidelines for future waveguide designs.

© 2012 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optics at Surfaces

History
Original Manuscript: December 23, 2011
Revised Manuscript: April 12, 2012
Manuscript Accepted: June 11, 2012
Published: July 12, 2012

Citation
Ran Hao, Erping Li, and Xingchang Wei, "Two-dimensional light confinement in cross-index-modulation plasmonic waveguides," Opt. Lett. 37, 2934-2936 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-14-2934


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