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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 5 — Feb. 28, 2011
  • pp: 4324–4336

Analysis of optical waveguides with ultra-thin metal film based on the multidomain pseudospectral frequency-domain method

Po-Jui Chiang, Yen-Chung Chiang, Nai-Hsiang Sun, and Shi-Xi Hong  »View Author Affiliations

Optics Express, Vol. 19, Issue 5, pp. 4324-4336 (2011)

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Analysis of optical waveguides with thin metal films is studied by the multidomain pseudospectral frequency-domain (PSFD) method. Calculated results for both guiding and leaky modes are precise by means of the PSFD based on Chebyshev-Lagrange interpolating polynomials with modified perfectly matched layer (MPML). By introducing a suitable boundary condition for the dielectric-metallic interface, the stability and the spectrum convergence characteristic of the PSFD-MPML method can be sustained. The comparison of exact solutions of highly sensitive surface plasmon modes in 1D dielectric-metal waveguides and those calculated by our PSFD-MPML demonstrates the validity and usefulness of the proposed method. We also apply the method to calculate the effective refractive indices of an integrated optical waveguide with deposition of the finite gold metal layer which induces the hybrid surface plasmon modes. Furthermore, the 2-D optical structures with gold films are investigated to exhibit hybrid surface plasmon modes of wide variations. We then apply hybrid surface plasmon modes to design novel optical components–mode selective devices and the polarizing beam splitter.

© 2011 OSA

OCIS Codes
(230.4000) Optical devices : Microstructure fabrication
(260.2110) Physical optics : Electromagnetic optics
(130.5440) Integrated optics : Polarization-selective devices

ToC Category:
Integrated Optics

Original Manuscript: December 22, 2010
Revised Manuscript: February 9, 2011
Manuscript Accepted: February 10, 2011
Published: February 18, 2011

Po-Jui Chiang, Yen-Chung Chiang, Nai-Hsiang Sun, and Shi-Xi Hong, "Analysis of optical waveguides with ultra-thin metal film based on the multidomain pseudospectral frequency-domain method," Opt. Express 19, 4324-4336 (2011)

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