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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 23 — Dec. 1, 2006
  • pp: 3420–3422

Optics of tunneling from adiabatic nanotapers

M. Sumetsky  »View Author Affiliations


Optics Letters, Vol. 31, Issue 23, pp. 3420-3422 (2006)
http://dx.doi.org/10.1364/OL.31.003420


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Abstract

A theory of light propagation along adiabatic photonic nanowire tapers (nanotapers) having diameters significantly less than the radiation wavelength λ 1 μ m is developed. The fundamental mode of a nanotaper primarily consists of an evanescent field, which propagates in the ambient medium and is very sensitive to the nanotaper shape. General analytical expressions for the evanescent field and the radiation loss of adiabatic nanotapers are obtained and applied to the investigation of the optics of tunneling from a nanotaper of a characteristic shape. The radiation loss of this nanotaper occurs locally near a focal circumference of the evanescent field, representing an intersection of a complex caustic surface with real space, where the fundamental mode splits into the radiating and guiding components. The interference of these components gives rise to a sequence of circumferences with zero electromagnetic field.

© 2006 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.7370) Optical devices : Waveguides

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 18, 2006
Revised Manuscript: August 22, 2006
Manuscript Accepted: August 31, 2006
Published: November 9, 2006

Citation
M. Sumetsky, "Optics of tunneling from adiabatic nanotapers," Opt. Lett. 31, 3420-3422 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-23-3420


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References

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