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Radial partially coherent beams for free-space optical communications
Author(s): Minghao Wang; Xiuhua Yuan; Jun Li; Xiaoxin Zhou
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Paper Abstract

In this study, a special class of nonuniformly correlated beams with radially symmetric coherence distributions, called radial partially coherent beams (RPCBs), is numerically studied. By spatially modulating uniformly correlated phase screens used for generating conventional Gaussian Schell-model beams, RPCBs with arbitrary distributions of degree of coherence are produced. RPCBs whose degree of coherence decreases from the beam center along the radial direction were found to self-focus in free-space propagation, leading to augmented optical intensity near the beam center. Meanwhile, the scintillation mitigation ability of RPCBs remains significant. By means of wave optics simulation, propagation properties of RPCBs in anisotropic non-Kolmogorov turbulence are analyzed. Simulation results show that, under certain conditions RPCBs are still able to deliver improved performance in anisotropic non-Kolmogorov turbulence. Moreover, due to the elliptical far-field irradiance pattern caused by anisotropy, a matched elliptic receiving aperture can further reduce the turbulence-induced scintillation.

Paper Details

Date Published: 31 August 2017
PDF: 8 pages
Proc. SPIE 10408, Laser Communication and Propagation through the Atmosphere and Oceans VI, 1040813 (31 August 2017); doi: 10.1117/12.2271945
Show Author Affiliations
Minghao Wang, Huazhong Univ. of Science and Technology (China)
Xiuhua Yuan, Huazhong Univ. of Science and Technology (China)
Jun Li, Huazhong Univ. of Science and Technology (China)
Xiaoxin Zhou, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10408:
Laser Communication and Propagation through the Atmosphere and Oceans VI
Jeremy P. Bos; Alexander M. J. van Eijk; Stephen M. Hammel, Editor(s)

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