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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 3 — Feb. 11, 2013
  • pp: 3388–3399

Flexible tube lattice fibers for terahertz applications

V. Setti, L. Vincetti, and A. Argyros  »View Author Affiliations

Optics Express, Vol. 21, Issue 3, pp. 3388-3399 (2013)

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In this paper a flexible hollow core waveguide for the terahertz spectral range is demonstrated. Its cladding is composed of a circular arrangement of dielectric tubes surrounded by a heat-shrink jacket that allows the fiber to be flexible. Characterization of straight samples shows that the hollow core allows the absorption caused by the polymethylmethacrylate tubes of the cladding to be reduced by 31 times at 0.375 THz and 272 times at 0.828 THz with respect to the bulk material, achieving losses of 0.3 and 0.16 dB/cm respectively. Bending loss is also experimentally measured and compared to numerical results. For large bending radii bending loss scales as R b 2, whereas for small bending radii additional resonances between core and cladding appear. The transmission window bandwidth is also shown to shrink as the bending radius is reduced. An analytical model is proposed to predict and quantify both of these bending effects.

© 2013 OSA

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2400) Fiber optics and optical communications : Fiber properties
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(060.4005) Fiber optics and optical communications : Microstructured fibers
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 19, 2012
Revised Manuscript: December 21, 2012
Manuscript Accepted: December 31, 2012
Published: February 4, 2013

V. Setti, L. Vincetti, and A. Argyros, "Flexible tube lattice fibers for terahertz applications," Opt. Express 21, 3388-3399 (2013)

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