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Proceedings Paper

An optical fiber humidity sensor based on optical absorption
Author(s): Biao Wang; Fujun Zhang; Fufei Pang; Tingyun Wang
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Paper Abstract

A simple optical fiber relative humidity (RH) sensor was proposed and demonstrated. The humidity sensor was fabricated by coating moisture-sensitive film on the end face of a multi-mode optical fiber. The film was synthesized by doping CoCl2 into a PVA/SiO2 composite solution. Based on an optical absorption technique, the sensor head was characterized. From the optical absorption, a relative humidity range of 25%~65% was detected. Furthermore, the sensor has good repetitive response, and the response time was less than 2 min.

Paper Details

Date Published: 29 November 2011
PDF: 6 pages
Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83112A (29 November 2011); doi: 10.1117/12.904443
Show Author Affiliations
Biao Wang, Shanghai Univ. (China)
Fujun Zhang, Shanghai Univ. (China)
Shandong Univ. (China)
Fufei Pang, Shanghai Univ. (China)
Tingyun Wang, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 8311:
Optical Sensors and Biophotonics III
Jürgen Popp, Editor(s)

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