Influence of anisotropic turbulence on the orbital angular momentum modes of Hermite-Gaussian vortex beam in the ocean

被引：112
|
作者：
Li, Ye [1 ]
Yu, Lin [2 ]
Zhang, Yixin [1 ,2 ]
机构：
[1] Jiangnan Univ, Coll Internet Things, Wuxi 214000, Jiangsu, Peoples R China
[2] Jiangnan Univ, Coll Sci, Wuxi 214000, Jiangsu, Peoples R China
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 11期
关键词：
PROPAGATION; FLUCTUATIONS; BEHAVIOR;
D O I：
10.1364/OE.25.012203
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Applying the angular spectrum theory, we derive the expression of a new Hermite-Gaussian (HG) vortex beam. Based on the new Hermite-Gaussian (HG) vortex beam, we establish the model of the received probability density of orbital angular momentum (OAM) modes of this beam propagating through a turbulent ocean of anisotropy. By numerical simulation, we investigate the influence of oceanic turbulence and beam parameters on the received probability density of signal OAM modes and crosstalk OAM modes of the HG vortex beam. The results show that the influence of oceanic turbulence of anisotropy on the received probability of signal OAM modes is smaller than isotropic oceanic turbulence under the same condition, and the effect of salinity fluctuation on the received probability of the signal OAM modes is larger than the effect of temperature fluctuation. In the strong dissipation of kinetic energy per unit mass of fluid and the weak dissipation rate of temperature variance, we can decrease the effects of turbulence on the received probability of signal OAM modes by selecting a long wavelength and a larger transverse size of the HG vortex beam in the source's plane. In long distance propagation, the HG vortex beam is superior to the Laguerre-Gaussian beam for resisting the destruction of oceanic turbulence. (C) 2017 Optical Society of America
引用
收藏
页码：12203 / 12215
页数：13
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