Defensive perimeter detection by polarization change of the fibre optic signal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F19%3APU134114" target="_blank" >RIV/00216305:26220/19:PU134114 - isvavai.cz</a>

Alternative codes found

RIV/60162694:G43__/19:00555445

Result on the web

<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11157/2532529/Defensive-perimeter-detection-by-polarization-change-of-the-fibre-optic/10.1117/12.2532529.full?SSO=1" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11157/2532529/Defensive-perimeter-detection-by-polarization-change-of-the-fibre-optic/10.1117/12.2532529.full?SSO=1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2532529" target="_blank" >10.1117/12.2532529</a>

Result language

angličtina

Original language name

Defensive perimeter detection by polarization change of the fibre optic signal

Original language description

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.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20202 - Communication engineering and systems

Project

<a href="/en/project/VI20192022140" target="_blank" >VI20192022140: Detection of Defence Perimeter Disturbance by Instaneous Changing of Optical Signal Polarization</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

SPIE Remote Sensing Technologies and Applications in Urban Environments IV. 2019

ISBN

9781510630178

ISSN

—

e-ISSN

—

Number of pages

6

Pages from-to

1-6

Publisher name

SPIE

Place of publication

Strasbourg, France

Event location

Strasbourg

Event date

Sep 9, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000511152100016