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9 April 2007 Perturbation place localization by the use of two-interferometer fiber optic system
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Proceedings Volume 6608, Lightguides and Their Applications III; 66081O (2007) https://doi.org/10.1117/12.739748
Event: Lightguides and Their Applications III, 2006, Krasnobród, Poland
Abstract
We present investigation results of a new generation of the fiber optic perimeter sensor in a Sagnac and Michelson interferometers configuration. This sensor can detect a potential intruder and determine its position along a protected zone. We propose a localization method that makes use of the inherent properties of both interferometers. After demodulation of signals from both interferometers, the obtained amplitude characteristic of the Sagnac interferometer depends on position of a disturbance along the interferometer, while amplitude characteristic of the Michelson interferometer do not depend on this position. So, quotient of both demodulated characteristics makes possible to localize the disturbance. Arrangement of a laboratory model of the sensor and its signal processing scheme is also presented. During research of the laboratory model of the sensor, it was possible to detect the position of the disturbance with resolution of about 40m along the 6-km long sensor.
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M. Kondrat and M. Życzkowski "Perturbation place localization by the use of two-interferometer fiber optic system", Proc. SPIE 6608, Lightguides and Their Applications III, 66081O (9 April 2007); https://doi.org/10.1117/12.739748
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