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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 25 — Dec. 5, 2011
  • pp: 24967–24979

Design and optimization of low-loss high-birefringence hollow fiber at terahertz frequency

Xiao-Li Tang, Bang-Shan Sun, and Yi-Wei Shi  »View Author Affiliations

Optics Express, Vol. 19, Issue 25, pp. 24967-24979 (2011)

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Transmission characteristics at terahertz (THz) frequencies are numerically analyzed for elliptical dielectric-coated metallic hollow fiber (DMHF). Attenuation constants, group velocity, modal birefringence, and modal power fraction in the air core are presented. Optimization of the fiber geometry is investigated to reduce the attenuation and to increase the birefringence simultaneously. Modal birefringence of 3.3×10−2 and attenuation of 2.4 dB/m are expected. It is found that a desirable ellipticity of the air core is around 3. And both the modal birefringence and the attenuation constant are inversely proportional to the cube of the core size. Multiple dielectric layers significantly reduce the attenuation and meanwhile have little influence on the modal birefringence.

© 2011 OSA

OCIS Codes
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(230.7370) Optical devices : Waveguides
(260.1440) Physical optics : Birefringence
(040.2235) Detectors : Far infrared or terahertz

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: September 13, 2011
Revised Manuscript: October 27, 2011
Manuscript Accepted: October 27, 2011
Published: November 22, 2011

Xiao-Li Tang, Bang-Shan Sun, and Yi-Wei Shi, "Design and optimization of low-loss high-birefringence hollow fiber at terahertz frequency," Opt. Express 19, 24967-24979 (2011)

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