Diffraction Effects and Optical Beam Shaping in FSO Terminals
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F16%3APU119715" target="_blank" >RIV/00216305:26220/16:PU119715 - isvavai.cz</a>
Result on the web
<a href="http://www.springer.com/gp/book/9783319302003" target="_blank" >http://www.springer.com/gp/book/9783319302003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-319-30201-0" target="_blank" >10.1007/978-3-319-30201-0</a>
Alternative languages
Result language
angličtina
Original language name
Diffraction Effects and Optical Beam Shaping in FSO Terminals
Original language description
The first part of the chapter is focused on the wave effects, which occur when the Gaussian beam is being restricted by a circular aperture, e.g. by a lens socket. An elliptically symmetrical Gaussian beam is considered in the analysis to improve the generality and to analyze beams produced by edge-emitting semicon-ductor lasers. From the Huygens-Fresnel principle, two models of the Fresnel dif-fraction were derived. These models provided means for defining contrast of the diffraction pattern that can be used to quantitatively assess the influence of the dif-fraction effects on the optical link performance. The second section is devoted to the study that shows the misalignment analysis for two cases – lateral displace-ment and angular misalignment of the transmitter and the receiver, respectively. The expression for the misalignment attenuation of the elliptical Gaussian beam in FSO links is derived. It will be also shown, how the elliptical Gaussian beam can be used to improve the system’s resistance to some deteriorating effects, e.g. building sway. The third part of the chapter is focused on the analysis of the opti-mal optical intensity distribution within a radiated laser beam at a transmitter plane which is propagated through free space. The aim of the chapter is to deter-mine the optimal parameters for a Flattened Gaussian beam at the transmitter plane.
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LO1401" target="_blank" >LO1401: Interdisciplinary Research of Wireless Technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Optical Wireless Communications - An Emerging Technology
ISBN
978-3-319-30200-3
Number of pages of the result
21
Pages from-to
1-21
Number of pages of the book
634
Publisher name
Springer International Publishing
Place of publication
Springer International Publishing Switzerland
UT code for WoS chapter
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