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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3754–3761

Limits of light guidance in optical nanofibers

Alexander Hartung, Sven Brueckner, and Hartmut Bartelt  »View Author Affiliations

Optics Express, Vol. 18, Issue 4, pp. 3754-3761 (2010)

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Reducing the waist of an optical fiber taper to diameters below 1 µm can be interpreted as creating an optical nanofiber with propagation properties different from conventional optical fibers. Although there is theoretically no cutoff of the fundamental mode expected, a steep decline in transmission can be observed when the fiber diameter is reduced below a specific threshold diameter. A simple estimation of this threshold diameter applicable to arbitrary taper profiles and based on the diameter variation allowing adiabatic transmission behavior is introduced and experimentally verified. In addition, this threshold behavior is supported by investigating the variation of the power distribution of the nanofiber fundamental mode as a function of the fiber diameter.

© 2010 OSA

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2400) Fiber optics and optical communications : Fiber properties
(230.7370) Optical devices : Waveguides
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:
Photonic Crystals

Original Manuscript: January 6, 2010
Revised Manuscript: January 26, 2010
Manuscript Accepted: January 29, 2010
Published: February 9, 2010

Alexander Hartung, Sven Brueckner, and Hartmut Bartelt, "Limits of light guidance in optical nanofibers," Opt. Express 18, 3754-3761 (2010)

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