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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 23, Iss. 8 — Aug. 1, 2006
  • pp: 1660–1665

Metal heterostructure-based nanophotonic devices: finite-difference time-domain numerical simulations

Guo Ping Wang and Bing Wang  »View Author Affiliations


JOSA B, Vol. 23, Issue 8, pp. 1660-1665 (2006)
http://dx.doi.org/10.1364/JOSAB.23.001660


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Abstract

We numerically demonstrate a kind of metal heterostructure (MHS) for high-efficiency nanofocusing and nanoguiding of light through finite-difference time-domain simulations. The results reveal that Al–Ag constructed MHSs with a trapezoid Ag guide can focus an incident light into a domain of about 0.004 λ 2 with higher than 96% focusing efficiency, whereas that with a rectangular Ag guide can transport light energy within 65 nm × 55 nm cross section with a propagation loss as low as 2.0 dB μ m . The physics behind the above interesting nanophotonic properties is explained on the basis of the principle of conventional integrated optics, and potential applications of MHSs in other nanophotonic devices are also discussed.

© 2006 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(240.6680) Optics at surfaces : Surface plasmons
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Optical Devices

History
Original Manuscript: August 26, 2005
Revised Manuscript: February 2, 2006
Manuscript Accepted: April 1, 2006

Citation
Guo Ping Wang and Bing Wang, "Metal heterostructure-based nanophotonic devices: finite-difference time-domain numerical simulations," J. Opt. Soc. Am. B 23, 1660-1665 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-8-1660


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