Highly-Confined Guiding of Terahertz Waves Along Subwavelength Grooves

We propose a scheme of guiding and manipulating terahertz waves that features tight confinement and large propagation length, even when the waveguide lateral dimensions are well in the subwavelength regime. In a tapered structure of the proposed groove waveguide, the guided mode can be stopped at di...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 24; no. 15; pp. 1343 - 1345
Main Authors Gao, Zhen, Shen, Linfang, Zheng, Xiaodong
Format Journal Article
LanguageEnglish
Published IEEE 01.08.2012
Subjects
Metals
Metamaterials
Optical surface waves
Optical waveguides
Optimized production technology
Plasmons
surface plasmon polaritons
Surface waves
terahertz
waveguides
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Summary:We propose a scheme of guiding and manipulating terahertz waves that features tight confinement and large propagation length, even when the waveguide lateral dimensions are well in the subwavelength regime. In a tapered structure of the proposed groove waveguide, the guided mode can be stopped at different positions for different frequencies when it travels along the waveguide. Additionally, we demonstrate that nearly 100% transmission through a sharp 90° bend can be achieved in this groove waveguide.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2012.2203355