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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 21 — Oct. 13, 2008
  • pp: 16314–16325

Characteristics of gap plasmon waveguide with stub structures

Yosuke Matsuzaki, Toshihiro Okamoto, Masanobu Haraguchi, Masuo Fukui, and Masatoshi Nakagaki  »View Author Affiliations

Optics Express, Vol. 16, Issue 21, pp. 16314-16325 (2008)

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We found that metal-dielectric-metal plasmon waveguides with a stub structure, i.e. a branch of the waveguide with a finite length, can function as wavelength selective filters of a submicron size. It was found that the transmission characteristics of such structures depend on the phase relationship between the plasmon wave passing through the stub and the one returning to the waveguide from the stub. We also propose structures with a lossless 90o bend in a plasmon waveguide, utilizing a stub structure. Furthermore, we present a functional stub structure, e.g., a 1:1 demultiplexer and a wavelength selective demultiplexer.

© 2008 Optical Society of America

OCIS Codes
(230.7400) Optical devices : Waveguides, slab
(240.6680) Optics at surfaces : Surface plasmons
(250.5300) Optoelectronics : Photonic integrated circuits
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Optics at Surfaces

Original Manuscript: June 9, 2008
Revised Manuscript: August 19, 2008
Manuscript Accepted: August 19, 2008
Published: September 29, 2008

Yousuke Matsuzaki, Toshihiro Okamoto, Masanobu Haraguchi, Masuo Fukui, and Masatoshi Nakagaki, "Characteristics of gap plasmon waveguide with stub structures," Opt. Express 16, 16314-16325 (2008)

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