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Proceedings Paper

Optical fiber gas sensing system based on FBG filtering
Author(s): Shutao Wang
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Paper Abstract

An optical fiber gas sensing system based on the law of Beer-Lambert is designed to determine the concentration of gas. This technique relies on the fact that the target gas has a unique, well-defined absorption characteristic within the infrared region of electromagnetic spectrum. The narrow-band filtering characteristic of optical fiber Bragg grating is used to produce the narrow spectrum light signal. An aspheric objective optical fiber collimator is used in the system as an optical fiber gas sensing detector to improve the sensitivity and stability. Experimental results show there is a high measuring sensitivity at 0.01%, and the measuring range goes beyond 5%.

Paper Details

Date Published: 12 January 2009
PDF: 10 pages
Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71331A (12 January 2009); doi: 10.1117/12.807946
Show Author Affiliations
Shutao Wang, Yanshan Univ. (China)

Published in SPIE Proceedings Vol. 7133:
Fifth International Symposium on Instrumentation Science and Technology
Jiubin Tan; Xianfang Wen, Editor(s)

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