Effect of anisotropy on the radius of curvature and Rayleigh range of a general-type partially coherent beam in oceanic turbulence

Xingrong Zheng; Wenyu Fu

doi:10.1117/12.2551852

31 January 2020 Effect of anisotropy on the radius of curvature and Rayleigh range of a general-type partially coherent beam in oceanic turbulence

Xingrong Zheng, Wenyu Fu

Author Affiliations +

Proceedings Volume 11427, Second Target Recognition and Artificial Intelligence Summit Forum; 114271P (2020) https://doi.org/10.1117/12.2551852
Event: Second Target Recognition and Artificial Intelligence Summit Forum, 2019, Changchun, China

Abstract

In view of the previous work, the effective radius of curvature (ERC) and Rayleigh range z_R of a general-type partially coherent beam propagating are studied in anisotropic oceanic turbulence. Based on the extended Huygens–Fresnel integral, we derive the formulae of the second-order moments of Wigner distribution function (WDF) in anisotropic oceanic turbulence. The calculation results reveal that turbulent anisotropy has a sharp impact on both the ERC and Rayleigh range for a general-type beam. In the near field, the effect of anisotropic oceanic turbulence on the ERC is distinct. With the increase of propagation distance, these influence on the ERC gradually weaken, and can be ignored in the far field. In addition, z_R is always larger than that of the conventional Gaussian-Shell model beam in anisotropic oceanic turbulence. And these results will be useful in optical underwater communication.

Citation Download Citation

Xingrong Zheng and Wenyu Fu "Effect of anisotropy on the radius of curvature and Rayleigh range of a general-type partially coherent beam in oceanic turbulence", Proc. SPIE 11427, Second Target Recognition and Artificial Intelligence Summit Forum, 114271P (31 January 2020); https://doi.org/10.1117/12.2551852

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