Fiber-optic chemical sensor using polyaniline as modified cladding material

An intrinsic fiber-optic chemical sensor is developed by replacing a certain portion of the original cladding with a chemically sensitive material, specifically, polyaniline. Both the light absorption coefficient and the refractive index of the polymer change upon its exposure to different chemical...

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Bibliographic Details
Published inIEEE sensors journal Vol. 3; no. 1; pp. 5 - 12
Main Authors Yuan, Jianming, El-Sherif, MA
Format Journal Article
LanguageEnglish
Published New York IEEE 01.02.2003
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Absorption
Chemical sensors
Cladding
Fiber optics
Modulation
Optical fiber sensors
Optical fibers
Optical materials
Optical modulation
Optical polymers
Optical properties
Optical refraction
Optical sensors
Optical variables control
Polyanilines
Refractive index
Sensors
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Summary:An intrinsic fiber-optic chemical sensor is developed by replacing a certain portion of the original cladding with a chemically sensitive material, specifically, polyaniline. Both the light absorption coefficient and the refractive index of the polymer change upon its exposure to different chemical vapors. These changes induce the optical intensity modulation of the transmitted optical signal. Therefore, the developed structure is proposed for optical sensor applications. The performance of the sensor depends on the optical properties of the replaced cladding material, the cladding modification process, and the properties of the transmitted light within the optical fiber.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2003.809023