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Multimode laser beam scintillations in non-kolmogorov turbulence

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dc.contributor.author Baykal, Yahya
dc.date.accessioned 2017-03-09T12:01:53Z
dc.date.available 2017-03-09T12:01:53Z
dc.date.issued 2015-09
dc.identifier.citation Baykal, Y. (2015). Multimode laser beam scintillations in non-kolmogorov turbulence. IEEE Journal On Selected Areas In Communications, 33(9), 1883-1889. http://dx.doi.org/ 10.1109/JSAC.2015.2432531 tr_TR
dc.identifier.issn 0733-8716
dc.identifier.uri http://hdl.handle.net/20.500.12416/1416
dc.description.abstract Employing the Rytov solution, the scintillation index at the origin of the receiver plane is evaluated in non-Kolmogorov weak atmospheric turbulence when multimode laser incidence is used. The solution presented can be used when the multimode is composed of even modes. The novelty of this work lies in the theoretical combination of multimode laser beam excitation and non-Kolmogorov turbulence in the scintillation evaluations, which is not known both theoretically and experimentally. The study involves mathematical rigor but no experimental results. Being valid for any power law exponent of the non-Kolmogorov turbulence, the scintillations of the multimode beams are found to be smaller than the scintillation index of a single Gaussian beam. For the multimode laser beam excitation, the scintillation index is smaller at smaller power law exponent values. If the multimode content is formed by beams with larger mode numbers, the scintillations decrease for any non-Kolmogorov realization. When large sized beams are used in the multimode, the scintillations increase as compared to small sized content, and the scintillations become almost the same as the Gaussian beam scintillations. Comparing the multimode structures that have the same number of beams, the ones with higher order modes yield smaller scintillations, and for such multimode structures, very similar scintillation index behaviour versus the power law exponent can be obtained by varying the amplitudes of the modes composing the multimode. The main contribution of this paper is the formulation and evaluation of the scintillation noise in order to understand whether the use of multimode laser excitation will improve the link performance of optical wireless communication systems operating in a non-Kolmogorov atmosphere tr_TR
dc.language.iso eng tr_TR
dc.publisher IEEE-Inst Electrical Electronics Engineers Inc tr_TR
dc.relation.isversionof 10.1109/JSAC.2015.2432531 tr_TR
dc.rights info:eu-repo/semantics/closedAccess
dc.subject Atmospheric Turbulence tr_TR
dc.subject Scintillation tr_TR
dc.subject Multimode Laser tr_TR
dc.title Multimode laser beam scintillations in non-kolmogorov turbulence tr_TR
dc.type article tr_TR
dc.relation.journal IEEE Journal On Selected Areas In Communications tr_TR
dc.contributor.authorID 7812 tr_TR
dc.identifier.volume 33 tr_TR
dc.identifier.issue 9 tr_TR
dc.identifier.startpage 1883 tr_TR
dc.identifier.endpage 1889 tr_TR
dc.contributor.department Çankaya Üniversitesi, Mühendislik Fakültesi, Elektrik Elektronik Mühendisliği Bölümü tr_TR


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