Unclad Evanescent Wave Fiber Optic Sensor for Toxic Gas Detection
Ammonia Gas Sensing
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ISBN-13:
9783659976445
Veröffentl:
2016
Einband:
Paperback
Erscheinungsdatum:
24.10.2016
Seiten:
80
Autor:
Mohammed Suham
Gewicht:
137 g
Format:
220x150x5 mm
Sprache:
Englisch
Beschreibung:
In this book, we present the design and construction of an evanescent wave fiber optic sensor for sensing the toxic gas (ammonia). The design of this fiber optic sensor is based on a cladding modification approach. A step index plastic multimode fiber with unclad middle region acts as the sensing element. The experimental results show a positive response to ammonia vapor at various concentrations. The sensing probe length, source intensity and source wavelength, shows an influence on the sensor response. The theoretical designing of sensing probe has also been presented here. Finally fiber optic is used to detect organic gases (Acetone) at different exposure time.