Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens

Temporal analysis of the irradiance at the detector plane is intended as the first step in the study of the mean fade time in a free optical communication system. In the present work this analysis has been performed for a Gaussian laser beam propagating in the atmospheric turbulence by means of comp...

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Detalles Bibliográficos
Autores: Dios Otín, Víctor Federico|||0000-0002-6720-8514, Recolons Martos, Jaume, Rodríguez Gómez, Alejandro Antonio|||0000-0002-9209-0685, Batet Torrell, Óscar
Tipo de recurso: artículo
Fecha de publicación:2008
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/118044
Acceso en línea:https://hdl.handle.net/2117/118044
https://dx.doi.org/10.1364/OE.16.002206
Access Level:acceso abierto
Palabra clave:Optical communications
Atmospheric turbulence
Gaussian beams
Laser beam propagation
Laser beams
Power spectra
Scintillation index
Comunicacions òptiques
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
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spelling Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screensDios Otín, Víctor Federico|||0000-0002-6720-8514Recolons Martos, JaumeRodríguez Gómez, Alejandro Antonio|||0000-0002-9209-0685Batet Torrell, ÓscarOptical communicationsAtmospheric turbulenceGaussian beamsLaser beam propagationLaser beamsPower spectraScintillation indexComunicacions òptiquesÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òpticaTemporal analysis of the irradiance at the detector plane is intended as the first step in the study of the mean fade time in a free optical communication system. In the present work this analysis has been performed for a Gaussian laser beam propagating in the atmospheric turbulence by means of computer simulation. To this end, we have adapted a previously known numerical method to the generation of long phase screens. The screens are displaced in a transverse direction as the wave is propagated, in order to simulate the wind effect. The amplitude of the temporal covariance and its power spectrum have been obtained at the optical axis, at the beam centroid and at a certain distance from these two points. Results have been worked out for weak, moderate and strong turbulence regimes and when possible they have been compared with theoretical models. These results show a significant contribution of beam wander to the temporal behaviour of the irradiance, even in the case of weak turbulence. We have also found that the spectral bandwidth of the covariance is hardly dependent on the Rytov variance.Peer Reviewed20082008-02-0420182018-06-12journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/118044https://dx.doi.org/10.1364/OE.16.002206reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengMinisterio de Educación y Ciencia TEC2006-12722 EVALUACION DE LAS PRESTACIONES DE LOS SISTEMAS DE COMUNICACIONES OPTICAS NO GUIADAS DE ALTA CAPACIDADopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1180442026-05-27T15:37:01Z
dc.title.none.fl_str_mv Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
title Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
spellingShingle Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
Dios Otín, Víctor Federico|||0000-0002-6720-8514
Optical communications
Atmospheric turbulence
Gaussian beams
Laser beam propagation
Laser beams
Power spectra
Scintillation index
Comunicacions òptiques
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
title_short Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
title_full Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
title_fullStr Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
title_full_unstemmed Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
title_sort Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
dc.creator.none.fl_str_mv Dios Otín, Víctor Federico|||0000-0002-6720-8514
Recolons Martos, Jaume
Rodríguez Gómez, Alejandro Antonio|||0000-0002-9209-0685
Batet Torrell, Óscar
author Dios Otín, Víctor Federico|||0000-0002-6720-8514
author_facet Dios Otín, Víctor Federico|||0000-0002-6720-8514
Recolons Martos, Jaume
Rodríguez Gómez, Alejandro Antonio|||0000-0002-9209-0685
Batet Torrell, Óscar
author_role author
author2 Recolons Martos, Jaume
Rodríguez Gómez, Alejandro Antonio|||0000-0002-9209-0685
Batet Torrell, Óscar
author2_role author
author
author
dc.subject.none.fl_str_mv Optical communications
Atmospheric turbulence
Gaussian beams
Laser beam propagation
Laser beams
Power spectra
Scintillation index
Comunicacions òptiques
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
topic Optical communications
Atmospheric turbulence
Gaussian beams
Laser beam propagation
Laser beams
Power spectra
Scintillation index
Comunicacions òptiques
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
description Temporal analysis of the irradiance at the detector plane is intended as the first step in the study of the mean fade time in a free optical communication system. In the present work this analysis has been performed for a Gaussian laser beam propagating in the atmospheric turbulence by means of computer simulation. To this end, we have adapted a previously known numerical method to the generation of long phase screens. The screens are displaced in a transverse direction as the wave is propagated, in order to simulate the wind effect. The amplitude of the temporal covariance and its power spectrum have been obtained at the optical axis, at the beam centroid and at a certain distance from these two points. Results have been worked out for weak, moderate and strong turbulence regimes and when possible they have been compared with theoretical models. These results show a significant contribution of beam wander to the temporal behaviour of the irradiance, even in the case of weak turbulence. We have also found that the spectral bandwidth of the covariance is hardly dependent on the Rytov variance.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-02-04
2018
2018-06-12
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/118044
https://dx.doi.org/10.1364/OE.16.002206
url https://hdl.handle.net/2117/118044
https://dx.doi.org/10.1364/OE.16.002206
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Educación y Ciencia TEC2006-12722 EVALUACION DE LAS PRESTACIONES DE LOS SISTEMAS DE COMUNICACIONES OPTICAS NO GUIADAS DE ALTA CAPACIDAD
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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