Optical fiber gas sensing system based on FBG filtering

Shutao Wang

doi:10.1117/12.807946

12 January 2009 Optical fiber gas sensing system based on FBG filtering

Shutao Wang

Proceedings Volume 7133, Fifth International Symposium on Instrumentation Science and Technology; 71331A (2009) https://doi.org/10.1117/12.807946
Event: International Symposium on Instrumentation Science and Technology, 2008, Shenyang, China

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%.

Citation Download Citation

Shutao Wang "Optical fiber gas sensing system based on FBG filtering", Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71331A (12 January 2009); https://doi.org/10.1117/12.807946

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