Performance enhancement of free-space optical communications under atmospheric turbulence using modes diversity coherent receipt

Zheng, Donghao; Li, Yan; Zhou, Honghang; Bian, Yiming; Yang, Chen; Li, Wei; Qiu, Jifang; Guo, Hongxiang; Hong, Xiaobin; Zuo, Yong; Giles, Ian; Tong, Weijun; Wu, Jian

doi:10.1364/oe.26.028879

Cited by 54 publications

(26 citation statements)

References 24 publications

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“…for the electrical combining. Equations (10) and (11) show that SNR CBC ≥ SNR DCC . If the input is already diffraction limited (i.e.…”

Section: B Snr Comparison and Discussion Of Resultsmentioning

confidence: 99%

“…single-mode, in the absence of atmospheric turbulence), the electrical combining can reduce SNR whereas the optical combining approach will not offer a significant advantage in the case of a stable unperturbed diffraction-limited wavefront. Furthermore, equations (10) and (11) can be applied to calculate the SNR for the experimental results obtained with and without turbulence, shown in Figures 3 and 4. The comparison shown in Fig.…”

Section: B Snr Comparison and Discussion Of Resultsmentioning

confidence: 99%

“…We see in Eqn. (10) and Eqn. ( 11) that the SNR for the DCC case is always lower than for the CBC apart from when the power at the lantern outputs is equal.…”

Section: B Snr Comparison and Discussion Of Resultsmentioning

confidence: 99%

“…This scheme takes advantage of the high coupling efficiency of a multimode signal to the multimode end of a photonic lantern [7] and the higher tolerance in free-space coupling situations to tilt errors [8]. It also takes advantage of the high mixing efficiency achieved in single-mode fibre (SMF) [9], and has been used in laser detection and ranging (LIDAR) [3] and free-space optical communications [10].…”

Section: Introductionmentioning

confidence: 99%

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All-fiber photonic lantern multimode optical receiver with coherent adaptive optics beam combining

Zhang¹,

Sun²,

Lao³

et al. 2021

Preprint

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A multimode optical receiver for free space optical communications (FSOC) based on a photonic lantern and adaptive optics coherent beam combining (CBC) of the lantern's single-mode outputs is proposed and demonstrated for the first time. The use of optical coherent combining in fiber serves to increase the signal to noise ratio compared to similar receivers based on electrically combined signals, and represents an all-fiber approach to low-order adaptive optics. This optical receiver is demonstrated using a photonic lantern with three outputs, fibre couplers and active phase locking, and further investigated under atmospheric conditions with and without turbulence.

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“…for the electrical combining. Equations (10) and (11) show that SNR CBC ≥ SNR DCC . If the input is already diffraction limited (i.e.…”

Section: B Snr Comparison and Discussion Of Resultsmentioning

confidence: 99%

Section: B Snr Comparison and Discussion Of Resultsmentioning

confidence: 99%

“…We see in Eqn. (10) and Eqn. ( 11) that the SNR for the DCC case is always lower than for the CBC apart from when the power at the lantern outputs is equal.…”

Section: B Snr Comparison and Discussion Of Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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All-fiber photonic lantern multimode optical receiver with coherent adaptive optics beam combining

Zhang¹,

Sun²,

Lao³

et al. 2021

Preprint

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“…Introducing the hybrid multiplexing system into the atmospheric turbulence channel and discussing the influence of turbulence on it will provide new ideas for improving the performance of free-space optical (FSO) communication systems. As a result, hybrid multiplexing has now become a focus in current FSO communication research [12][13][14][15][16]. In this paper, we used a hybrid multiplexing system that combines different multiplexing methods to transmit information in the atmospheric turbulence channel and studied the effects of atmospheric turbulence on the system [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effects of Atmospheric Turbulence on OAM-POL-FDM Hybrid Multiplexing Communication System

Zhao¹,

Liu

Hao³

et al. 2019

Applied Sciences

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This paper proposes a 32-channel-hybrid-multiplexing system on atmospheric turbulence. With the utilization of the hybrid multiplexing of orbital angular momentum (OAM), polarization, and frequency, the communication speed of the system can be significantly improved, and this system can be well combined with the existing frequency division multiplexing (FDM) optical communication network. Within this communication system, we discuss the effects of different turbulence intensities on the phase, OAM crosstalk, spectrum, and bit error rate (BER) in turbulent channels. Under strong turbulence, 46.8% of the energy leaks to the neighbor OAM and become noise when multiple topological charge states are transmitted. The research reflects the impact of various parameters of the OAM hybrid multiplexing system under turbulence, which is closer to a practical application scenario and is significant for implementing OAM communication in the turbulence channel.

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OSBN: architecture and control mechanism of optical switched satellite backbone network

et al. 2022

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Performance enhancement of free-space optical communications under atmospheric turbulence using modes diversity coherent receipt

Cited by 54 publications

References 24 publications

All-fiber photonic lantern multimode optical receiver with coherent adaptive optics beam combining

All-fiber photonic lantern multimode optical receiver with coherent adaptive optics beam combining

Effects of Atmospheric Turbulence on OAM-POL-FDM Hybrid Multiplexing Communication System

OSBN: architecture and control mechanism of optical switched satellite backbone network

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