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Optics Letters

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  • Editor: Anthony J Campillo
  • Vol. 32, Iss. 7 — Apr. 1, 2007
  • pp: 754–756

Thinnest optical waveguide: experimental test

M. Sumetsky, Y. Dulashko, P. Domachuk, and B. J. Eggleton  »View Author Affiliations


Optics Letters, Vol. 32, Issue 7, pp. 754-756 (2007)
http://dx.doi.org/10.1364/OL.32.000754


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Abstract

A thin dielectric waveguide with a subwavelength diameter can exhibit very small transmission loss only if its diameter is greater than a threshold value, while for smaller diameters, waveguide loss grows dramatically. The threshold diameter of transition between these waveguiding and nonwaveguiding regimes is primarily determined by the wavelength of propagating light and, to a much lesser degree, by the characteristic length of the waveguide’s long-range nonuniformity. For this reason, the transmission spectrum of a thin waveguide allows immediate and quite accurate determination of its thickness. An experimental test of these facts is performed for a tapered microfiber. Good agreement with the recently developed theory of adiabatic microfiber tapers is demonstrated.

© 2007 Optical Society of America

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 26, 2006
Revised Manuscript: December 13, 2006
Manuscript Accepted: December 27, 2006
Published: March 5, 2007

Citation
M. Sumetsky, Y. Dulashko, P. Domachuk, and B. J. Eggleton, "Thinnest optical waveguide: experimental test," Opt. Lett. 32, 754-756 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-7-754


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