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ABSTRACT
Since their advent, optical fibers have become prevalent in telecommunications, and a few years later, are widely used in the field of sensors. Unlike any conventional communication device, the optical fiber sensor must provide the highest signal possible in response to a specified disturbance. It nonetheless possesses the same properties as telecommunication optical fibers: electrical insulation, immunity to electromagnetic disturbances, resistance to high temperatures and irradiations.
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Jean-Claude FESTINGER: ENSEM engineer (École Nationale Supérieure d'Électricité et de Mécanique) - Doctor-Engineer - Science journalist
INTRODUCTION
Since their industrial development over a quarter of a century ago, optical fibers have made their mark in communications. They have now embarked on other avenues, such as fiber optic sensors.
Communication equipment and fiber optic sensors differ in the nature of the transmitted signal. The former is designed to carry the signal with the minimum of disturbance, while the latter must deliver the strongest possible signal in response to a specified disturbance.
Fiber optic sensors nevertheless benefit from the qualities of optical fibers used in telecommunications: electrical insulation, immunity to electromagnetic interference, intrinsic safety, resistance to high temperatures and strong irradiation.
In this first dossier , we define and describe the different types of sensor.
In a second folder , we focus on fiber optic measurement and control.
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Fiber optic sensors. Presentation
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