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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 23 — Dec. 1, 2008
  • pp: 2874–2876

Tooth-shaped plasmonic waveguide filters with nanometeric sizes

Xian-Shi Lin and Xu-Guang Huang  »View Author Affiliations

Optics Letters, Vol. 33, Issue 23, pp. 2874-2876 (2008)

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A novel nanometeric plasmonic filter in a tooth-shaped metal-insulator-metal waveguide is proposed and demonstrated numerically. An analytic model based on the scattering matrix method is given. The result reveals that the single tooth-shaped filter has a wavelength-filtering characteristic and an ultracompact size in the length of a few hundred nanometers, compared to gratinglike surface plasmon polariton (SPP) filters. Both analytic and simulation results show that the wavelength of the trough of the transmission has linear and nonlinear relationships with the tooth depth and the tooth width, respectively. The waveguide filter could be utilized to develop ultracompact photonic filters for high integration.

© 2008 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(240.6680) Optics at surfaces : Surface plasmons
(290.5825) Scattering : Scattering theory
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:

Original Manuscript: August 1, 2008
Revised Manuscript: October 13, 2008
Manuscript Accepted: October 16, 2008
Published: November 26, 2008

Xian-Shi Lin and Xu-Guang Huang, "Tooth-shaped plasmonic waveguide filters with nanometeric sizes," Opt. Lett. 33, 2874-2876 (2008)

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