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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 973–976

Hybrid nanowedge plasmonic waveguide for low loss propagation with ultra-deep-subwavelength mode confinement

Youqiao Ma, Gerald Farrell, Yuliya Semenova, and Qiang Wu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 4, pp. 973-976 (2014)
http://dx.doi.org/10.1364/OL.39.000973


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Abstract

In this Letter, a novel waveguide based on hybrid surface plasmon polaritons (HSPPs) is proposed and numerically analyzed. This waveguide consists of two dielectric nanowires placed on both sides of a nanowedge-patterned metal film, which can confine light in the ultra-deep-subwavelength region (ranging from λ2/4000 to λ2/400) with a long propagation length (ranging from 1200 to 3500 μm). Compared to a previous HSPPs waveguide without the nanowedges, with the same propagation length, our proposed structure has much higher mode confinement with 1 order of magnitude smaller normalized mode area. An investigation of the effect of structural perturbations indicates that our proposed waveguide also has good tolerance of fabrication errors. The proposed waveguide could be an interesting alternative structure to realize nanolasers and optical trapping.

© 2014 Optical Society of America

OCIS Codes
(230.0230) Optical devices : Optical devices
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Thin Films

History
Original Manuscript: December 9, 2013
Revised Manuscript: January 10, 2014
Manuscript Accepted: January 12, 2014
Published: February 11, 2014

Citation
Youqiao Ma, Gerald Farrell, Yuliya Semenova, and Qiang Wu, "Hybrid nanowedge plasmonic waveguide for low loss propagation with ultra-deep-subwavelength mode confinement," Opt. Lett. 39, 973-976 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-4-973


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