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Diffraction Effects and Optical Beam Shaping in FSO Terminals

Identifikátory výsledku

  • Kód výsledku v 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>

  • Výsledek na webu

    <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>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Diffraction Effects and Optical Beam Shaping in FSO Terminals

  • Popis výsledku v původním jazyce

    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.

  • Název v anglickém jazyce

    Diffraction Effects and Optical Beam Shaping in FSO Terminals

  • Popis výsledku anglicky

    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.

Klasifikace

  • Druh

    C - Kapitola v odborné knize

  • CEP obor

    JA - Elektronika a optoelektronika, elektrotechnika

  • OECD FORD obor

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/LO1401" target="_blank" >LO1401: Interdisciplinární výzkum bezdrátových technologií</a><br>

  • Návaznosti

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

Ostatní

  • Rok uplatnění

    2016

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název knihy nebo sborníku

    Optical Wireless Communications - An Emerging Technology

  • ISBN

    978-3-319-30200-3

  • Počet stran výsledku

    21

  • Strana od-do

    1-21

  • Počet stran knihy

    634

  • Název nakladatele

    Springer International Publishing

  • Místo vydání

    Springer International Publishing Switzerland

  • Kód UT WoS kapitoly