Zeolite thin film-coated fiber sensors based on Fabry-Perot interferometer for detection of chemical vapors

A novel zeolite-coated fiber sensors for detection of volatile organic compounds (VOCs) based on the Fabry-Perot interferometer was proposed and demonstrated. The sensor comprised a polycrystalline silicalite thin film grown up on the cleaved end face of a standard single-mode fiber. The inline Fabr...

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Bibliographic Details
Published in:Photonic sensors (Berlin) 2015-06, Vol.5 (2), p.137-141
Main Authors: Ning, Xiangping, Zhao, Chunliu, Shi, Feifei, Kang, Juan
Format: Article
Language:English
Subjects:
Lasers
Measurement Science and Instrumentation
Microwaves
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Regular
RF and Optical Engineering
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Summary:A novel zeolite-coated fiber sensors for detection of volatile organic compounds (VOCs) based on the Fabry-Perot interferometer was proposed and demonstrated. The sensor comprised a polycrystalline silicalite thin film grown up on the cleaved end face of a standard single-mode fiber. The inline Fabry-Perot cavity was composed by the end face of the single-mode fiber and the thin film. The sensor device operated by measuring the interference signal, which was a function of the amount of chemical vapor adsorption in its crystalline micro porous structure. Experimental results showed that the proposed VOC sensor worked well and the sensitivities were 2.78×10 −3 dB/ppm when the concentration ranged from 350 ppm to 2100 ppm and 1.23×10 −3 dB/ppm when the concentration ranged from 2100 ppm to 5250 ppm.
ISSN:1674-9251
2190-7439
DOI:10.1007/s13320-015-0233-4