Simulation of random phase screen of non-Kolmogorov atmospheric turbulence

Yujie, 李玉杰 Li; Wenyue, 朱文越 Zhu; Ruizhong, 饶瑞中 Rao

doi:10.3788/irla20164512.1211001

红外与激光工程

2016

DOI: 10.3788/irla20164512.1211001

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Simulation of random phase screen of non-Kolmogorov atmospheric turbulence

李玉杰 Li Yujie¹,

朱文越 Zhu Wenyue²,

饶瑞中 Rao Ruizhong³

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An Empirical Model of Angle-of-Arrival Variance for a Gaussian Wave Propagation through Non-Kolmogorov Turbulence

Gao

Jiao

2020

International Journal of Optics

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This paper proposes an empirical model of the angle-of-arrival (AOA) variance for a Gaussian wave propagating through the weak non-Kolmogorov turbulence. The proposed model is approximately expressed as the linear weighted average between the AOA variances of the plane and spherical waves. The Monte Carlo method is applied to validate the proposed model. The numerical simulations indicate that, under the geometrical optics approximation, the AOA variance for a Gaussian wave is insensitive to the change of the diffraction parameter and can be closely approximated by a simple linear relationship in the refraction parameter. These two properties ensure the validity of the empirical model.

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An Empirical Model of Angle-of-Arrival Variance for a Gaussian Wave Propagation through Non-Kolmogorov Turbulence

Gao

Jiao

2020

International Journal of Optics

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Research on adaptive optics technology based on phase contrast Gerchberg Saxton algorithm

Wang,

Ke,

Lang

et al. 2024

Zeitschrift Für Naturforschung A

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In wireless optical communication, the optical signal passes through the atmospheric turbulence, resulting in the simultaneous distortion of the amplitude and phase of the optical signal at the receiving end. This article applies the idea of phase contrast method to simultaneously compensate the amplitude and phase of the optical signal at the receiving end, derives the mapping relationship between the compensated phase and light intensity, and obtains the required compensated phase for full-field compensation. Numerical calculations show that when the difference between zero-frequency phase compensation and nonzero-frequency phase compensation is ±π, the maximum light intensity compensation is obtained. Based on the Gerchberg Saxton algorithm, a new method is proposed to invert the compensated phase with the maximum light intensity after full-field compensation and perform full-field correction through the adaptive optical system. The numerical calculation and experiment show that the phase contrast Gerchberg Saxton algorithm can effectively compensate the distorted optical signals under different turbulence, and thus the received signals of optical wireless communication can be corrected in full field.

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Simulation of random phase screen of non-Kolmogorov atmospheric turbulence

Cited by 2 publications

References 0 publications

An Empirical Model of Angle-of-Arrival Variance for a Gaussian Wave Propagation through Non-Kolmogorov Turbulence

An Empirical Model of Angle-of-Arrival Variance for a Gaussian Wave Propagation through Non-Kolmogorov Turbulence

Research on adaptive optics technology based on phase contrast Gerchberg Saxton algorithm

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