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Proceedings Paper

Multicomponent fiber optic gas sensor based on MIR tunable diode lasers
Author(s): Eugene V. Stepanov; Andrian I. Kouznetsov; Pavel V. Zyrianov; Vjacheslav G. Artioushenko; Yurii G. Selivanov
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Paper Abstract

Within the framework of this studies development of a model of a functional multicomponent highly sensitive new generation analyzer, designed to measure 2 to 4 gas components in a mixture, was proposed. This model will become a prototype for a whole new family of analyzers, which will differ from one another by their particular set of detected gases and sensitivity depending on task requirements. The gas detecting analyzers utilise the principles of high resolution absorption spectroscopy, possibly by utilising a tunable diode lasers (TDL) in the IR range. By using a laser spectral method for measuring, it ensures high sensitivity, accuracy, selectivity and fast time response in recording. The distinguishing aspect in the development of the analyzer is the design and schematic based on the use of MIR-fiber optics with low optic losses. Hence, it is possible to have the unit in a small geometric volume with instrumentation for a multichannel measuring optical track, and a simplified cryostatic system for IR lasers and photodetectors. With the help of a highly sensitive, fast tune responding analyzer based on tunable diode lasers, molecular gases, having absorption bands in the IR range, can be measured. Detection of molecules like CO, CO2, NO, NO2, N20, H2S, SO2, NH3, H20, H2O2, CH4, C2H2, C2H4, HF, HC1, HCN, freons and many others is possible using this technique. These multicomponent gas sensors can be applied as a diagnostic tool in scientific investigations, in physics, chemistiy and biochemistry, in ecology - for recording atmospheric pollutants, in medicine - diagnosing illnesses and screen tests as well as in industiy - trace chemical technology and burning processes. These systems can be also used as a reference tool for calibration of less sensitive and less precise gas analyzers used in routine monitoring.

Paper Details

Date Published: 29 September 1995
PDF: 9 pages
Proc. SPIE 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII, (29 September 1995); doi: 10.1117/12.221735
Show Author Affiliations
Eugene V. Stepanov, General Physics Institute (Russia)
Andrian I. Kouznetsov, General Physics Institute (Russia)
Pavel V. Zyrianov, General Physics Institute (Russia)
Vjacheslav G. Artioushenko, Institute of Advance Fiber Optics (Russia)
Yurii G. Selivanov, Physics Institute (Russia)

Published in SPIE Proceedings Vol. 2508:
Chemical, Biochemical, and Environmental Fiber Sensors VII
Annamaria V. Scheggi, Editor(s)

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