A plastic optical fibre sensor for real-time humidity monitoring

Certain kinds of cellulose, such as a hydroxyethylcellulose, swell in a humid atmosphere and show a decrease in refractive index. Using this effect, a simple optical humidity sensor with fast response and high sensitivity, based on the plastic optical fibre structure change from leaky to guided, was...

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Bibliographic Details
Published in:Measurement science & technology 2003-06, Vol.14 (6), p.746-750
Main Authors: Muto, Shinzo, Suzuki, Osamu, Amano, Takashi, Morisawa, Masayuki
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fiber-optic instruments
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Optical instruments, equipment and techniques
Physics
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
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Summary:Certain kinds of cellulose, such as a hydroxyethylcellulose, swell in a humid atmosphere and show a decrease in refractive index. Using this effect, a simple optical humidity sensor with fast response and high sensitivity, based on the plastic optical fibre structure change from leaky to guided, was easily fabricated and used for real-time humidity monitoring.
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/14/6/306