Results 141 to 150 of about 7,781 (181)
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Deep turbulence propagation of a Gaussian-beam wave in anisotropic non-Kolmogorov turbulence
SPIE Proceedings, 2013In the conventional Kolmogorov model of turbulence the turbulent fluctuations of the index of refraction are assumed to be statistically homogeneous and isotropic, and there is a specific mathematical form for the power spectral density of the index of refraction fluctuations.
Andrews, L. C. +3 more
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Temporal frequency spread of optical wave propagation through anisotropic non-Kolmogorov turbulence
Journal of Optics, 2015In this paper, we derive new analytic expressions for the atmospheric-induced frequency spread of optical plane and spherical waves propagating in a horizontal path and experiencing anisotropic non-Kolmogorov turbulence. The anisotropic spectrum model is based on the assumption that circular symmetry is maintained in the orthogonal xy-plane throughout ...
Stephen Kotiang, Jaeho Choi
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Journal of the Optical Society of America A, 2015
Theoretical and experimental investigations have shown that the atmospheric turbulence exhibits both anisotropic and non-Kolmogorov properties. Very recent analyses of angle of arrival (AOA) fluctuations of an optical wave in anisotropic non-Kolmogorov turbulence have adopted the assumption that the propagation path was in the z-direction with circular
Linyan, Cui, Bindang, Xue
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Theoretical and experimental investigations have shown that the atmospheric turbulence exhibits both anisotropic and non-Kolmogorov properties. Very recent analyses of angle of arrival (AOA) fluctuations of an optical wave in anisotropic non-Kolmogorov turbulence have adopted the assumption that the propagation path was in the z-direction with circular
Linyan, Cui, Bindang, Xue
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Optics Communications, 2017
Abstract A new ring Airy Gaussian (RAiG) vortex beam generation method by coherent combination of Gaussian beam array has been proposed. To validate the feasibility of this method, the propagation properties of the RAiG vortex beam and the coherent combining beam in vacuum have been studied and analyzed.
Dong Zhi +6 more
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Abstract A new ring Airy Gaussian (RAiG) vortex beam generation method by coherent combination of Gaussian beam array has been proposed. To validate the feasibility of this method, the propagation properties of the RAiG vortex beam and the coherent combining beam in vacuum have been studied and analyzed.
Dong Zhi +6 more
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Journal of the Optical Society of America B, 2022
In this paper, bit error rate (BER) performance of a free-space optical communication (FSOC) system operating in anisotropic non-Kolmogorov weak turbulence is investigated together with the spatial diversity techniques. The spatial diversity techniques are implemented as maximum ratio combining (MRC), equal gain combining (EGC), and selection combining
Yalçın Ata +2 more
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In this paper, bit error rate (BER) performance of a free-space optical communication (FSOC) system operating in anisotropic non-Kolmogorov weak turbulence is investigated together with the spatial diversity techniques. The spatial diversity techniques are implemented as maximum ratio combining (MRC), equal gain combining (EGC), and selection combining
Yalçın Ata +2 more
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SPIE Proceedings, 2016
The intensity of turbulent distortions in an atmosphere characterized by a structural constant of the refractive index change which is subject to the law of “two – thirds” in model of turbulence Kolmogorov – Obukhov. It is presented the numerical model of atmospheric turbulence, for which the degree of change of the structural constant of the ...
V. V. Lavrinov, L. N. Lavrinova
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The intensity of turbulent distortions in an atmosphere characterized by a structural constant of the refractive index change which is subject to the law of “two – thirds” in model of turbulence Kolmogorov – Obukhov. It is presented the numerical model of atmospheric turbulence, for which the degree of change of the structural constant of the ...
V. V. Lavrinov, L. N. Lavrinova
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Optics Communications, 2016
Abstract Polarization and spatial coherence of quantization Gaussian Schell-beams propagating through the anisotropic non-Kolmogorov turbulence of marine-atmosphere channel are studied based on the quantized Huygens–Fresnel principle and the degree of quantum polarization.
Yuanhang Zhao +4 more
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Abstract Polarization and spatial coherence of quantization Gaussian Schell-beams propagating through the anisotropic non-Kolmogorov turbulence of marine-atmosphere channel are studied based on the quantized Huygens–Fresnel principle and the degree of quantum polarization.
Yuanhang Zhao +4 more
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Fourth Seminar on Novel Optoelectronic Detection Technology and Application, 2018
Utilizing the quantized Huygens-Fresnel principle, we study the effects of anisotropic non-Kolmogorov turbulence on the average polarizability of quantization Bessel-Gaussian Schell-model (BGSM) photon beams. We find that the average polarizability has a weak dependence on the outer scale.
Yixin Zhang, Ye Li
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Utilizing the quantized Huygens-Fresnel principle, we study the effects of anisotropic non-Kolmogorov turbulence on the average polarizability of quantization Bessel-Gaussian Schell-model (BGSM) photon beams. We find that the average polarizability has a weak dependence on the outer scale.
Yixin Zhang, Ye Li
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Laser Communication and Propagation through the Atmosphere and Oceans VII, 2018
In recent years, theoretical studies of optical propagation through turbulence exhibiting statistical anisotropy and a non- Kolmogorov energy spectrum, with a power law unequal to 11/3rds, have appeared regularly in the literature. In this study, we use split-step propagation wave optics simulations, together with FFT-based subharmonic phase screens to
Christopher C. Davis +2 more
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In recent years, theoretical studies of optical propagation through turbulence exhibiting statistical anisotropy and a non- Kolmogorov energy spectrum, with a power law unequal to 11/3rds, have appeared regularly in the literature. In this study, we use split-step propagation wave optics simulations, together with FFT-based subharmonic phase screens to
Christopher C. Davis +2 more
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Chinese Optics Letters, 2016
Mathematical models for the superimposed orbital angular momentum (OAM) mode of multiple Hankel–Bessel (HB) beams in anisotropic non-Kolmogorov turbulence are developed. The effects of anisotropic turbulence and source parameters on the mode detection spectrum of the superimposed OAM mode are analyzed.
Guanghui Wu Guanghui Wu +3 more
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Mathematical models for the superimposed orbital angular momentum (OAM) mode of multiple Hankel–Bessel (HB) beams in anisotropic non-Kolmogorov turbulence are developed. The effects of anisotropic turbulence and source parameters on the mode detection spectrum of the superimposed OAM mode are analyzed.
Guanghui Wu Guanghui Wu +3 more
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