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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 25 — Sep. 1, 2007
  • pp: 6223–6227

Two-dimensional model for three-dimensional index-guided multimode plasmonic waveguides and the design of ultrasmall multimode interference splitters

Zhanghua Han and Sailing He  »View Author Affiliations


Applied Optics, Vol. 46, Issue 25, pp. 6223-6227 (2007)
http://dx.doi.org/10.1364/AO.46.006223


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Abstract

We demonstrate that a three-dimensional (3D) index-guided multimode plasmonic waveguide can be approximated to a two-dimensional (2D) lossy slab waveguide by using an effective-index method. It is found that this 2D approximation is more accurate when the width of the multimode waveguide increases. Such a 2D approximation can be used for a quicker and more efficient design of complicated multimode plasmonic devices. 1 × N ultrasmall multimode interference splitters based on multimode surface plasmon waveguides are designed by using this 2D model and the designs are validated with a 3D finite-difference time-domain method.

© 2007 Optical Society of America

OCIS Codes
(230.1360) Optical devices : Beam splitters
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optical Devices

History
Original Manuscript: April 2, 2007
Revised Manuscript: June 25, 2007
Manuscript Accepted: July 9, 2007
Published: August 21, 2007

Citation
Zhanghua Han and Sailing He, "Two-dimensional model for three-dimensional index-guided multimode plasmonic waveguides and the design of ultrasmall multimode interference splitters," Appl. Opt. 46, 6223-6227 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-25-6223

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