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  • Vol. 36, Iss. 2 — Jan. 15, 2011
  • pp: 145–147

Localization of light on a cone: theoretical evidence and experimental demonstration for an optical fiber

M. Sumetsky  »View Author Affiliations


Optics Letters, Vol. 36, Issue 2, pp. 145-147 (2011)
http://dx.doi.org/10.1364/OL.36.000145


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Abstract

The classical rays propagating along a conical surface are bounded on the narrower side of the cone and unbounded on its wider side. In contrast, it is shown here that a dielectric cone with a small half-angle γ can perform as a high Q-factor optical microresonator which completely confines light. The theory of the discovered localized conical states is confirmed by the experimental demonstration, providing a unique approach for accurate local characterization of optical fibers (which usually have γ 1 0 5 or less) and a new paradigm in the field of high Q-factor resonators.

© 2011 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(130.6010) Integrated optics : Sensors
(140.4780) Lasers and laser optics : Optical resonators
(140.3948) Lasers and laser optics : Microcavity devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 27, 2010
Revised Manuscript: November 19, 2010
Manuscript Accepted: November 24, 2010
Published: January 6, 2011

Citation
M. Sumetsky, "Localization of light on a cone: theoretical evidence and experimental demonstration for an optical fiber," Opt. Lett. 36, 145-147 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-2-145


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References

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  9. For a small cone half-angle γ, the radial dependence of the propagating beam (i.e., dependence on the coordinate normal to the unfolded surface) remains unchanged and is omitted for brevity.
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  12. The resonance shape in Fig.  is reversed compared to those in Fig.  owing to the negative sign in the relation (λ−λq)/λq=−Δβ¯δβ0/βq.

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