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@inproceedings{1637217,
author = {Kyselák, Martin and Filka, Miloslav and Grenar, DAvid and Slavíček, Karel and Vlček, Čestmír and Čučka, Milan and Vávra, Jiří},
address = {Strasbourg},
booktitle = {SPIE Remote Sensing Technologies and Applications in Urban Environments IV. 2019},
doi = {http://dx.doi.org/10.1117/12.2532529},
keywords = {Fiber sensor; polarization maintaining fiber; optical fiber; birefringence; temperature field disturbance; approximation equations; approximation parameters.},
howpublished = {elektronická verze "online"},
language = {eng},
location = {Strasbourg},
isbn = {978-1-5106-3017-8},
pages = {1-6},
publisher = {SPIE},
title = {Defensive perimeter detection by polarization change of the fibre optic signal. In SPIE Remote Sensing Technologies and Applications in Urban Environments},
url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11157/2532529/Defensive-perimeter-detection-by-polarization-change-of-the-fibre-optic/10.1117/12.2532529.short},
year = {2019}
}
TY - JOUR
ID - 1637217
AU - Kyselák, Martin - Filka, Miloslav - Grenar, DAvid - Slavíček, Karel - Vlček, Čestmír - Čučka, Milan - Vávra, Jiří
PY - 2019
TI - Defensive perimeter detection by polarization change of the fibre optic signal. In SPIE Remote Sensing Technologies and Applications in Urban Environments
PB - SPIE
CY - Strasbourg
SN - 9781510630178
KW - Fiber sensor
KW - polarization maintaining fiber
KW - optical fiber
KW - birefringence
KW - temperature field disturbance
KW - approximation equations
KW - approximation parameters.
UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11157/2532529/Defensive-perimeter-detection-by-polarization-change-of-the-fibre-optic/10.1117/12.2532529.short
L2 - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11157/2532529/Defensive-perimeter-detection-by-polarization-change-of-the-fibre-optic/10.1117/12.2532529.short
N2 - The accurate measurement of temperature changes is the key skill not only for predictions of various natural phenomena or to detect intrusion of the object. The temperature changes we nowadays measure in local climate zones or Urban Heat Islands. The environmental quality is an essential feature of life quality and to improve it serve many remote sensingbased urban planning indicators, which are the common part of present smart cities. Continuously developing fibre optic sensors allow their benefits to be exploited in more and more applications. Defensive Perimeter Detection by Polarization Change of the Fiber Optic Signal offers an effective possibility to detect quickly and in time disturbing a predefined space. This detection system uses the polarizing properties of light and, in particular, the birefringence of optical fibres. The disclosed detection system focuses on temperature changes that may be caused by external or internal disruption of the site. The main detection equipment is the polarization maintaining optical fibre with the same excitation in both polarization axes. The transmission rate in both axes is in the ideal case the same, but due to birefringence, inhomogeneity, and imperfection of production and next causes the mutual delay of both signals causes the signal polarization state change or even the series of polarization states changes, which can be observed in laboratory conditions and described by known mathematical methods. However, these changes can be transformed by linear polarizer to the intensity changes. This conversion allows the changes significantly easier to evaluate.
ER -
KYSELÁK, Martin, Miloslav FILKA, DAvid GRENAR, Karel SLAVÍČEK, Čestmír VLČEK, Milan ČUČKA a Jiří VÁVRA. Defensive perimeter detection by polarization change of the fibre optic signal. In SPIE Remote Sensing Technologies and Applications in Urban Environments. Online. In \textit{SPIE Remote Sensing Technologies and Applications in Urban Environments IV. 2019}. Strasbourg: SPIE, 2019, s.~1-6. ISBN~978-1-5106-3017-8. Dostupné z: https://dx.doi.org/10.1117/12.2532529.
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