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Proceedings Paper

Improvement of sensitivity in plastic optical fiber gasoline leakage sensors
Author(s): Masayuki Morisawa; Kohji Uchiyama; Gargi Vishnoi; Shinzo Muto; Chan Xin Liang; Eimei Machida; Koichi Kiso
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Paper Abstract

Optical fiber sensors for detecting leakage of gasoline have been studied. When exposed to gasoline vapor, certain rubber-type polymers such as polyisoprene cause swelling and their refractive indexes decrease depending on the vapor pressure of gasoline. 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. This sensor head changes its fiber structure from leaky to guided, and then, change in the transmitted light intensity by leakage of gasoline can be observed. The improvement of sensitivity in a wide range of gasoline vapor pressure was attempted.

Paper Details

Date Published: 23 February 1999
PDF: 8 pages
Proc. SPIE 3540, Chemical, Biochemical, and Environmental Fiber Sensors X, (23 February 1999); doi: 10.1117/12.339794
Show Author Affiliations
Masayuki Morisawa, Yamanashi Univ. (Japan)
Kohji Uchiyama, Yamanashi Univ. (Japan)
Gargi Vishnoi, Yamanashi Univ. (India)
Shinzo Muto, Yamanashi Univ. (Japan)
Chan Xin Liang, TRI Chemical Lab. Inc. (Japan)
Eimei Machida, TRI Chemical Lab. Inc. (Japan)
Koichi Kiso, TRI Chemical Lab. Inc. (Japan)


Published in SPIE Proceedings Vol. 3540:
Chemical, Biochemical, and Environmental Fiber Sensors X
Robert A. Lieberman, Editor(s)

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