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Applied Optics

Applied 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)

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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

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

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)

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  1. H. Raether, Surface Plasmons (Springer-Verlag, 1988).
  2. L. Liu, Z. Han, and S. He, "Novel surface plasmon waveguide for high integration," Opt. Express 13, 6645-6650 (2005). [CrossRef] [PubMed]
  3. Z. Han, L. Liu, and E. Forsberg, "Ultra-compact directional couplers and Mach-Zehnder interferometers employing surface plasmon polaritons," Opt. Commun. 259, 690-695 (2006). [CrossRef]
  4. Z. Han, E. Forsberg, and S. He, "Surface plasmon Bragg gratings formed in metal-insulator-metal waveguides," IEEE Photon. Technol. Lett. 19, 91-93 (2007). [CrossRef]
  5. S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y. Laluet, and T. W. Ebbesen, "Channel plasmon subwavelength waveguide components including interferometers and ring resonators," Nature 440, 508-511 (2006). [CrossRef] [PubMed]
  6. A. Taflove and S. C. Hagness, Computational Electrodynamics (Artech House, 2000).
  7. T. Fujisawa and M. Koshiba, "Theoretical investigation of ultrasmall polarization-insensitive I/spl times/2 multimode interference waveguides based on sandwiched structures," IEEE Photon. Technol. Lett. 18, 1246-1248 (2006). [CrossRef]
  8. J. Takahara and T. Kobayashi, "Nano-optical waveguides breaking through diffraction limit of light," Proc. SPIE 5604, 158-172 (2004). [CrossRef]
  9. F. Kusunoki, T. Yotsuya, J. Takahara, and T. Kobayashi, "Propagation properties of guided waves in index-guided two-dimensional optical waveguides," Appl. Phys. Lett. 86, 211101-211103 (2005). [CrossRef]
  10. P. Tournois and V. Laude, "Negative group velocities in metal-film optical waveguide," Opt. Commun. 137, 41-45 (1997). [CrossRef]
  11. P. Lüsse, P. Stuwe, J. Schüle, and H. G. Unger, "Analysis of vectorial mode fields in optical waveguides by a new finite difference method," J. Lightwave Technol. 12, 487-493 (1994). [CrossRef]
  12. A. Boltasseva, T. Nikolajsen, K. Leosson, K. Kjaer, M. S. Larsen, and S. I. Bozhevolnyi, "Integrated optical components utilizing long-range surface plasmon polaritons," J. Lightwave Technol. 23, 413-422 (2005). [CrossRef]

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