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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 9 — Sep. 1, 2007
  • pp: 2333–2342

Guided plasmon polariton at 2D metal corners

Min Yan and Min Qiu  »View Author Affiliations


JOSA B, Vol. 24, Issue 9, pp. 2333-2342 (2007)
http://dx.doi.org/10.1364/JOSAB.24.002333


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Abstract

We investigate the properties of plasmon polaritons guided by 2D monoangular metal corners with a vector finite-element method. Such corner waveguides in general include both V-channel- and Λ-wedge-type waveguides. The influences of both geometric parameters (i.e., corner angle, tip sharpness, etc.) and operating wavelength to the mode properties, such as effective mode index, loss, and mode field size, are inspected. It is noticed that both a smaller corner angle and a sharper corner tip help to better confine the mode field. The confinement of the V-channel waveguide is found to be especially sensitive to its angle, while the confinement of the Λ-wedge waveguide is affected about equally by its angle and tip sharpness. Almost all superior mode field confinement is realized at the expense of higher propagation loss for such waveguides. The chromatic dispersion of such waveguides is found to be adequate for applications in integrated optical circuits. The mode behaviors of realistic corner waveguides with finite sidewalls are also studied.

© 2007 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(240.5420) Optics at surfaces : Polaritons
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

History
Original Manuscript: April 11, 2007
Manuscript Accepted: June 13, 2007
Published: August 23, 2007

Citation
Min Yan and Min Qiu, "Guided plasmon polariton at 2D metal corners," J. Opt. Soc. Am. B 24, 2333-2342 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-9-2333


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