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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 22 — Oct. 25, 2010
  • pp: 23133–23146

Waveguiding mechanism in tube lattice fibers

Luca Vincetti and Valerio Setti  »View Author Affiliations


Optics Express, Vol. 18, Issue 22, pp. 23133-23146 (2010)
http://dx.doi.org/10.1364/OE.18.023133


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Abstract

Waveguiding mechanism and modal characteristics of hollow core fibers consisting of a single or a regular arrangement of dielectric tubes are investigated. These fibers have been recently proposed as low loss, broadband THz waveguides. By starting from a description in terms of coupling between air and dielectric modes in a single tube waveguide, a simple and useful model is proposed and numerically validated. It is able to predict dispersion curves, high and low loss spectral regions, and the conditions to ensure the existence of low loss regions. In addition, it allows a better understanding of the role of the geometrical parameters and of the dielectric refractive index. The model is then applied to improve the tradeoff between low loss and effectively single mode propagation, showing that the best results are obtained with a heptagonal arrangement of the tubes.

© 2010 OSA

OCIS Codes
(060.2400) Fiber optics and optical communications : Fiber properties
(060.4005) Fiber optics and optical communications : Microstructured fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: August 10, 2010
Revised Manuscript: October 6, 2010
Manuscript Accepted: October 11, 2010
Published: October 19, 2010

Citation
Luca Vincetti and Valerio Setti, "Waveguiding mechanism in tube lattice fibers," Opt. Express 18, 23133-23146 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-22-23133


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