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A New Type of Terahertz Waveguides |
| LOU Shu-Qin;GUO Tie-Ying;FANG Hong;LI Hong-Lei;JIAN Shui-Sheng |
| Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044 |
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| Cite this article: |
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LOU Shu-Qin, GUO Tie-Ying, FANG Hong et al 2006 Chin. Phys. Lett. 23 235-238 |
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Abstract A new type of THz waveguides, which employs a solid polyethylene rod as the core and polyethylene tubes in a periodic array of square lattice as the cladding, is proposed. Optical properties of this new THz waveguide, especially in dispersion, confinement loss and single mode property, are investigated in detail with the plane wave expansion method and the beam propagation method. Numerical results demonstrate that the new THz waveguide can reach not only low dispersion but also low confinement loss at single mode propagation. Therefore, the square lattice structure is a better candidate as THz waveguides than the triangular ones.
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| Keywords:
84.40.Az
42.81.Qb
82.35.Lr
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Published: 01 January 2006
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| PACS: |
84.40.Az
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(Waveguides, transmission lines, striplines)
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42.81.Qb
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(Fiber waveguides, couplers, and arrays)
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82.35.Lr
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(Physical properties of polymers)
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