Fiber-coupling efficiency of a Gaussian-beam in anisotropic non-Kolmogorov turbulence in the presence of random angular jitter

Zhai, Chao

doi:10.1016/j.rinp.2020.102985

Cited by 17 publications

(7 citation statements)

References 23 publications

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“…So far, the community has conducted researches on the influence of atmospheric turbulence and pointing error on the coupling efficiency of SMF, respectively [9][10][11][12][13][14]. A theoretical description of the fiber coupling efficiency has been developed for FSO communication through atmospheric turbulence based on the Kolmogorov spectrum model for horizontal cases [9].…”

Section: Introductionmentioning

confidence: 99%

“…In [11,12], researchers extended this description to SMF coupling for a slanted path, and fiber coupling experiments using ground-to-satellite optical downlinks were performed using optical inter-orbit communications engineering test satellite. In [13], researchers developed the SMF coupling efficiency for a Gaussian-beam propagating horizontally through weak-to-strong anisotropic non-Kolmogorov turbulence in the presence of random angular jitter. In the following work, the author extended this description to SMF coupling for a satellite-to-ground downlink [10].…”

Section: Introductionmentioning

confidence: 99%

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Free-space to single-mode fiber coupling efficiency with optical system aberration and fiber positioning error under atmospheric turbulence

Bian¹,

Li²,

Chen³

et al. 2022

J. Opt.

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Benefiting from the rapid development of fiber-optic devices, high-speed free-space optical communication systems have recently used fiber-optic components. The received laser beam in such a system couples into single-mode fiber (SMF) at the input of the receiver module. This work is oriented to common problems in actual free-space optical coupling systems, such as atmospheric turbulence, optical system aberration, and fiber positioning error. We derive the statistical expectation models of SMF coupling efficiency with optical system aberration in the presence of atmospheric turbulence and the statistical expectation models of SMF coupling efficiency with fiber positioning error in the presence of atmospheric turbulence. The influences of optical system aberration and fiber positioning error on the coupling efficiency under different turbulence strengths are also analyzed in this paper.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Free-space to single-mode fiber coupling efficiency with optical system aberration and fiber positioning error under atmospheric turbulence

Bian¹,

Li²,

Chen³

et al. 2022

J. Opt.

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“…Although the Kolmogorov turbulence model is the most widely utilized atmospheric turbulence model at present Andrews and Phillips [1], as more and more atmospheric experimental results inconsistent with the Kolmogorov turbulence model are discovered, scientists have found that the anisotropic non-Kolmogorov turbulence model is a more realistic model for atmospheric turbulence Manning [2]; Procaccia and Constantin [3]; Belen'kii et al [4]; Toselli et al [5]; Andrews et al [6]; Kessar et al [7]; Cui et al [8]; Wang et al [9]; Beason et al [10]; Zhai [11]; Roşu et al [12]; Xu and Lai [13,14]. Later, in the process of establishing the anisotropic non-Kolmogorov turbulence model and related turbulence theory, in order to simplify the modeling, a hypothesis that the long axis of the turbulence cell should be horizontal to the ground is extensively introduced Andrews et al [6]; Cui et al [8].…”

Section: Introductionmentioning

confidence: 99%

Is the Anisotropic Tilt Angle Necessary in the Turbulence Spectrum of Refractive-Index Fluctuations?

Zhai

2022

Front. Phys.

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With the deepening of atmospheric turbulence research, scientists have discovered that the anisotropy of turbulence cells cannot be ignored. The anisotropic non-Kolmogorov turbulence model is more in line with the actual situation of atmospheric turbulence. However, the recent experimental results of Korotkova et al. and Beason et al. display that the turbulence cell has an anisotropic tilt angle, that is, the long axis of the turbulence cell may not be horizontal to the ground but has a certain angle with the ground. Therefore, it is urgent to analyze whether the anisotropic tilt angle is necessary in the turbulence spectrum. In this study, we develop the anisotropic non-Kolmogorov turbulence spectra for the horizontal and vertical links in the presence of the anisotropic tilt angle. Then, based on these spectra, the analytical expressions of the scintillation index for the horizontal and vertical links are derived under weak fluctuation condition. The results indicate that the anisotropic tilt angle is necessary in the vertical link but not in the horizontal link.

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“…Baykal et al examined the scintillation index for higher order laser beams propagating through weak anisotropic non-Kolmogorov atmospheric turbulence along horizontal links [10]. We derived the fiber-coupling efficiency for a Gaussian-beam propagating horizontally through weak-to-strong anisotropic non-Kolmogorov turbulence in the presence of random angular jitter and bias error [11]. In addition, then considering the ellipsoid hypothesis of turbulence cell, we derived a new anisotropic non-Kolmogorov turbulence spectrum for the satellite links that is applicable to both vertical and slant links, and developed the fiber-coupling efficiency for a Gaussian-beam propagating through the weak-to-strong anisotropic non-Kolmogorov satellite-to-ground downlink [12].…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Non-Kolmogorov Turbulence Spectrum with Anisotropic Tilt Angle

Zhai

2021

Photonics

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With the in-depth study of atmospheric turbulence, scholars have identified that the anisotropy of turbulence cells should not be forgotten. The anisotropic non-Kolmogorov turbulence model can better characterize the actual situation of atmospheric turbulence. However, the results of recent experiments by Wang et al. and Beason et al. demonstrate that the turbulence cell has an anisotropic tilt angle, i.e., the long axis of turbulence cell may not be horizontal to the ground but has a certain angle with the ground. In this paper, we derive the anisotropic non-Kolmogorov turbulence spectra for the horizontal and satellite links with anisotropic tilt angle. Then by use of these spectra, the analytical expressions of scintillation index in the horizontal and satellite links are derived for the weak fluctuation condition. The calculation results display that the scintillation index for the horizontal and satellite links vary with the changes of anisotropic tilt angle and azimuth angle. Therefore, the anisotropic tilt angle is indispensable in the horizontal and satellite links.

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Fiber-coupling efficiency of a Gaussian-beam in anisotropic non-Kolmogorov turbulence in the presence of random angular jitter

Cited by 17 publications

References 23 publications

Free-space to single-mode fiber coupling efficiency with optical system aberration and fiber positioning error under atmospheric turbulence

Free-space to single-mode fiber coupling efficiency with optical system aberration and fiber positioning error under atmospheric turbulence

Is the Anisotropic Tilt Angle Necessary in the Turbulence Spectrum of Refractive-Index Fluctuations?

Anisotropic Non-Kolmogorov Turbulence Spectrum with Anisotropic Tilt Angle

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