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Fiber-optic evanescent wave sensor for gas detection

A. Messica, A. Greenstein, A. Katzir, U. Schiessl, and M. Tacke

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Abstract

A novel fiber-optic evanescent wave sensor is presented. The sensor, composed of a lead salt tunable infrared laser and a multimode uncladded silver halide infrared optic fiber, was used for rapid measurement of sulfur hexafluoride pressures at a few-percent detection limit. High-precision detection and identification of a large variety of gases are possible.

© 1994 Optical Society of America

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