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Proceedings Paper

Plastic optical fiber sensors for detecting leakage of alkane gases and gasoline vapors
Author(s): Shinzo Muto; Kohji Uchiyama; Gargi Vishnoi; Masayuki Morisawa; Chan Xin Liang; Hideaki Machida; Koichi Kiso
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Paper Abstract

New optical fiber sensors for detecting leakage of vapor phase alkanes and gasoline have been studied. When exposed to these vapors, certain rubber-type polymers such as polyisoprene and polyisobutylene cause swelling and their refractive indexes decease depending on the vapor pressure of these substances. Based on this effect, the fiber-type sensor heads were fabricated by coating the swelling polymer as a cladding layer on the fiber core with slightly lower refractive index than that of cladding. When was exposed to vapor phase substances, the sensor head changed its fiber structure from leaky to guided one, and then a large change in the transmitted light intensity was observed in a wide range of the vapor pressure. The response was also found to be reversible and reproducible.

Paper Details

Date Published: 25 September 1998
PDF: 9 pages
Proc. SPIE 3417, Photopolymer Device Physics, Chemistry, and Applications IV, (25 September 1998); doi: 10.1117/12.323478
Show Author Affiliations
Shinzo Muto, Yamanashi Univ. (Japan)
Kohji Uchiyama, Yamanashi Univ. (Japan)
Gargi Vishnoi, Yamanashi Univ. (India)
Masayuki Morisawa, Yamanashi Univ. (Japan)
Chan Xin Liang, TRI Chemical Laboratory Inc. (Japan)
Hideaki Machida, TRI Chemical Laboratory Inc. (Japan)
Koichi Kiso, TRI Chemical Laboratory Inc. (Japan)

Published in SPIE Proceedings Vol. 3417:
Photopolymer Device Physics, Chemistry, and Applications IV
Roger A. Lessard, Editor(s)

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