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11 March 2020 Implementation of Bragg grating to a geotextile for detection a critical infrastructure
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Proceedings Volume 11331, Fourth International Conference on Photonics Solutions (ICPS2019); 113310L (2020)
Event: Fourth International Conference on Photonic Solutions (ICPS 2019), 2019, Chiang Mai, Thailand
Optical fiber sensors are becoming increasingly popular. Their biggest advantage is mainly resistance over electromagnetic interference and passivity in terms of power supply at the measuring point. Where the highest precision measurement and the highest responsibility is required, fiber-optic sensors are the best solution. In recent years, many studies about Bragg grating, being used in sensor applications, has been published. The development of these sensors has made a huge progress and the range of application is increasing rapidly. Bragg gratings are already widely used in industry, construction and are becoming more and more substantive in critical infrastructure. This article deals with an implementation of Bragg gratings into the geotextile and the creation of complex sensory elements. These sensor elements can be used to measure non-electric quantities (pressure stress, temperature, etc.). Selection of suitable geotextiles and combining them is an important step. From a sensory ability point of view, it is necessary to ensure the best possible transfer of the measured quantity to the geotextile and the Bragg grating. It follows to material selection and, above all, to appropriate distribution of sensory gratings within the geotextile. At the same time, it must also serve as a optical fiber protection that is very sensitive to a mechanical damage. It is necessary to ensure a correct fixation of the optical fiber with the Bragg grating. The assumption is that the geotextile will be stressed by pressure and tension. Thus, the optical fiber will be stretched in the geotextile and must not be released.
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Jakub Jaros, David Hruby, Vladimir Vasinek, Tomas Stratil, and Marcel Fajkus "Implementation of Bragg grating to a geotextile for detection a critical infrastructure", Proc. SPIE 11331, Fourth International Conference on Photonics Solutions (ICPS2019), 113310L (11 March 2020);

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