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Instrumentation Science & Technology Volume 40, 2012 - Issue 5
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Original Articles

REVIEW ON STRUCTURES AND PRINCIPLES OF GAS CELLS IN THE ABSORPTION SPECTRUM–BASED OPTICAL FIBER GAS SENSOR SYSTEMS

Yong Zhao College of Information Science and Engineering, Northeastern University, Shenyang, China; State Key Laboratory of Synthetical Automation for Process Industries, Northeastern University, Shenyang, ChinaCorrespondence[email protected]
,
Lu Bai College of Information Science and Engineering, Northeastern University, Shenyang, China
,
Ya-Nan Zhang College of Information Science and Engineering, Northeastern University, Shenyang, China
,
Wei Hou College of Information Science and Engineering, Northeastern University, Shenyang, China
&
Qi Wang College of Information Science and Engineering, Northeastern University, Shenyang, China; State Key Laboratory of Synthetical Automation for Process Industries, Northeastern University, Shenyang, China
Pages 385-401 | Published online: 02 Aug 2012
 
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Abstract

The main structures of the gas absorption cell, including small graded-index lens type, Bragg fiber type, photonic crystal type, etc., are compared in this article. Also, different principles of the gas absorption cell were discussed in detail in order to improve the sensitivity of the optical gas sensor. The study showed that the structure of gas cells plays a key role in the improvement of the sensitivity of optical gas sensors. The end of the article discusses the future direction of the development of the gas cell.

ACKNOWLEDGMENT

Project 20100042110029 was supported by Specialized Research Fund for the Doctoral Program of Higher Education. Projects 110204002, 100404006, and 110804003 were supported by the Fundamental Research Funds for the Central Universities.

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