Compensation of wavefront aberration using oppositional-breeding artificial fish swarm algorithm in free space optical communication

Kumar, Naresh; Khandelwal, Vineet

doi:10.1007/s12596-022-00947-4

Cited by 7 publications

(3 citation statements)

References 21 publications

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“…In this way, the requirements for the WFE in the transmitter terminal could be relaxed. On-ground receiver terminals using adaptive optics systems to compensate for the atmospheric turbulence 116 , 139 can also correct for the WFE induced by opto-thermo-mechanical phenomena. In this way, the coupling efficiency can be increased when an optical fiber is used for the detection of the signal.…”

Section: Mitigation Techniquesmentioning

confidence: 99%

Opto-thermo-mechanical phenomena in satellite free-space optical communications: survey and challenges

Badás,

Piron,

Bouwmeester

et al. 2023

Opt. Eng.

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Growing interest in free-space optical communication, due to the high bandwidth and security provided by these links, has generated the necessity of designing high-performance satellite terminals. In order to develop these terminals, the optothermo-mechanical phenomena that appear in the space environment and their effect on optical communication links have to be understood in detail. A review of the opto-thermo-mechanical phenomena occurring in spaceborne terminals is presented, describing the relevance of each of them. The methods found to compute the impact on the communication performance due to opto-thermo-mechanical phenomena are collected by building the bridge between the optical and communication performance parameters. Finally, techniques available to mitigate the detrimental effects of these phenomena are classified, and the relevant research challenges are identified.

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Section: Mitigation Techniquesmentioning

confidence: 99%

Opto-thermo-mechanical phenomena in satellite free-space optical communications: survey and challenges

Badás,

Piron,

Bouwmeester

et al. 2023

Opt. Eng.

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“…Numerous other studies have examined the influence of atmospheric turbulence on the optical fields, crosstalk, system power loss, and bit error rate (BER), among other factors [14,15]. Adaptive optics (AO) algorithms, such as the Shack-Hartmann (SH) wavefront correction method [16][17][18], stochastic parallel gradient descent (SPGD) [19], and the Wirtinger flow (WF) algorithm [20], and others [21][22][23], play a crucial role in mitigating the beam distortion caused by atmospheric turbulence. Among these methods, the Gerchberg-Saxton (GS) algorithm, a phase retrieval AO algorithm, utilizes the distorted wavefront to compensate for the received beam and has a wide range of applications [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the accuracy of rotational velocity measurement for vortex beams within the optimal ability of phase retrieval algorithm

Wang,

Zhang,

Yun

et al. 2024

Front. Phys.

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The measurement of the rotational velocity using the rotational Doppler effect (RDE) of a vortex beam is easily affected by atmospheric turbulence, leading to dispersed orbital angular momentum (OAM), and reduced measurement accuracy. This study investigates the optimal ability of the Gerchberg-Saxton (GS) phase retrieval algorithm to compensate for the optical field and enhance the velocity measurement accuracy within the optimal range of intrinsic parameters, such as the number of GS iterations, and extrinsic parameters, such as the atmospheric turbulence intensity and beam properties. Through detailed theoretical and simulation analyses, we demonstrate the outstanding effectiveness of the GS algorithm in improving the velocity measurement accuracy. Simulations conducted for a system-target distance of zS-T = 500 m show a 29.88% improvement in the velocity measurement accuracy and a 1.03-fold increase in the spectral signal-to-noise ratio (SSNR) within the optimal range. It showcases advantages that set it apart from other methods. This study reveals the threshold of the ability of GS algorithm to significantly enhance the rotational velocity measurement accuracy, providing valuable insights to precision measurements of rotational velocities in free-space applications.

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“…They suffer from limited compensation information acquisition dimensions, poor stability and optical field recovery quality [23,24]. Consequently, many researchers introduced intelligent algorithms such as the Artificial fish school algorithm (AFSA) [25], Convolutional neural networks (CNN) [26], and others [27][28][29] to further recover the optical field. In our work, this problem is addressed by proposing a research method that combines the GS algorithm with the Stokes polarization information assistance and Particle swarm optimization (PSO) algorithm, namely the Stokes-PSO GS algorithm, to compensate for the distorted vortex beam and improve velocity measurement accuracy.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Measurement of Vortex Beam Rotation Using Polarization-Assisted Particle Swarm Optimization for Phase Retrieval

Wang,

Zhang,

Wang

et al. 2023

Photonics

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In detecting the rotation velocity of an object employing the rotational Doppler effect of vortex beams, atmospheric turbulence can easily cause phase distortion and spiral spectrum dispersion, consequently reducing velocity measurement accuracy. This study combines adaptive optical intelligence algorithms with polarization compensation information to propose a novel approach, the Stokes–Particle swarm optimization Gerchberg–Saxton (Stokes-PSO GS) algorithm, which integrates Stokes polarization information assistance and PSO for GS phase retrieval. The algorithm adjusts the phase and amplitude of the pre-compensated phase screen of the GS algorithm utilizing Stokes information of polarized vortex beam (with lL = 5 and lR = −5) before and after distortion. The PSO is then employed to optimize the pre-compensated phase screen and perform compensations. Simulation results at zS-T = 200 m and Cn2 = 1 × 10−14 m−2/3, demonstrate that the Stokes-PSO GS algorithm exhibits strong stability (small angular spectrum purity deviation, σp, Stokes-PSO GS = 0.005675% < σp, GS = 11.62%), superior optical field recovery (well-recovered Stokes optical field, up to 33.76% improvement in angular spectrum purity), and high-velocity measurement accuracy (25.93% improvement) compared to the GS algorithm. This approach enables precise measurement of the rotation velocity of the vortex beam, demonstrating its potential in practical applications.

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Compensation of wavefront aberration using oppositional-breeding artificial fish swarm algorithm in free space optical communication

Cited by 7 publications

References 21 publications

Opto-thermo-mechanical phenomena in satellite free-space optical communications: survey and challenges

Opto-thermo-mechanical phenomena in satellite free-space optical communications: survey and challenges

Enhancing the accuracy of rotational velocity measurement for vortex beams within the optimal ability of phase retrieval algorithm

Enhanced Measurement of Vortex Beam Rotation Using Polarization-Assisted Particle Swarm Optimization for Phase Retrieval

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