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Proceedings Paper

Terahertz antiresonant reflecting hollow-core waveguides for sensing applications
Author(s): Borwen You; Ja-Yu Lu; Chi-Yu Chan; Chin-Ping Yu; Hao-Zai Chen; Tze-An Liu; Jin-Long Peng
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Paper Abstract

A dielectric hollow-core tube utilized as a terahertz anti-resonant reflecting hollow-core waveguide (THz-ARRHW) sensor has been demonstrated to detect the minute variation of both refractive index and thickness in macromolecule layers, deposited on the tube wall, and to identify liquid vapors from the various core indices. The minimal quantity of macromolecule layers loaded on the tube wall of a polypropylene tube can be detected at 1.2picomole/mm2 and 0.2%, corresponding to the variation of 2.9μm-thickness and 0.001-refractive-index. And the sensing performance of a THz- ARRHW to detect core index variation for identifying volatile liquids is also realized at 0.0001g/cm3- vapor density.

Paper Details

Date Published: 23 February 2011
PDF: 10 pages
Proc. SPIE 7938, Terahertz Technology and Applications IV, 79380K (23 February 2011); doi: 10.1117/12.875052
Show Author Affiliations
Borwen You, National Cheng Kung Univ. (Taiwan)
Ja-Yu Lu, National Cheng Kung Univ. (Taiwan)
Chi-Yu Chan, National Sun Yat-Sen Univ. (Taiwan)
Chin-Ping Yu, National Sun Yat-Sen Univ. (Taiwan)
Hao-Zai Chen, National Cheng Kung Univ. (Taiwan)
Tze-An Liu, Industrial Technology Research Institute (Taiwan)
Jin-Long Peng, Industrial Technology Research Institute (Taiwan)

Published in SPIE Proceedings Vol. 7938:
Terahertz Technology and Applications IV
Laurence P. Sadwick; Créidhe M. M. O'Sullivan, Editor(s)

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