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dc.contributor.authorDios Otín, Víctor Federico
dc.contributor.authorRecolons Martos, Jaume
dc.contributor.authorRodríguez Gómez, Alejandro Antonio
dc.contributor.authorBatet Torrell, Óscar
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria Nàutiques
dc.identifier.citationDios, V., Recolons, J., Rodriguez-Gomez, A., Batet, O. Temporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens. "Optics express", 4 Febrer 2008, vol. 16, núm. 3, p. 2206-2220.
dc.description.abstractTemporal 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.
dc.format.extent15 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
dc.subject.lcshOptical communications
dc.subject.otherAtmospheric turbulence
dc.subject.otherGaussian beams
dc.subject.otherLaser beam propagation
dc.subject.otherLaser beams
dc.subject.otherPower spectra
dc.subject.otherScintillation index
dc.titleTemporal analysis of laser beam propagation in the atmosphere using computer-generated long phase screens
dc.subject.lemacComunicacions òptiques
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
upcommons.citation.authorDios, V., Recolons, J., Rodriguez-Gomez, A., Batet, O.
upcommons.citation.publicationNameOptics express

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