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Optica Publishing Group
  • Journal of the Optical Society of Korea
  • Vol. 11,
  • Issue 3,
  • pp. 97-100
  • (2007)

Single-mode Condition and Dispersion of Terahertz Photonic Crystal Fiber

Open Access Open Access

Abstract

We have investigated properties of a plastic photonic crystal fiber guiding terahertz radiations, THz photonic crystal fiber. The single-mode condition and dispersion of a plastic triangular THz photonic crystal fiber are investigated by using the plane wave expansion method and the beam propagation method. The THz photonic crystal fiber can perform as a single-mode fiber below 2.5 THz when the ratio of diameter (d) and period (<TEX>${\Lambda}$</TEX>) of air holes is less than 0.475. The THz photonic crystal fiber with <TEX>${\Lambda}=500{\mu}m$</TEX> and <TEX>$d/{\Lambda}=0.4$</TEX> shows almost zero flattened dispersion behavior, <TEX>$-0.03{\pm}0.02 ps/THz{\cdot}cm$</TEX>, in the THz frequency range from 0.8 to 2.0 THz.

© 2007 Optical Society of Korea

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