Simulating Atmospheric Turbulence Using a Spatial Light Modulator based on Fourier Transform

Xu, Tong; Li, Yan; Du, Wentao; Ma, Chenxing; Cai, Shanyong; Lan, Mingying; Wu, Jian; Yu, Song; Lin, Jintong

doi:10.1364/cleo_si.2014.sm4j.3

Cited by 5 publications

(3 citation statements)

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“…ℎ 𝑖 is turbulence-induced random coefficient and will be obtained by simulating AT in the link. AT is simulated by moving and scanning large turbulence screens generated by Fourier Transform method [16]. In the scheme, to ensure fair comparison, turbulence screens used in the dual-hop and singlehop FSO systems are the same for the same turbulence intensity.…”

Section: B Channel Modelmentioning

confidence: 99%

Relaying System Based on Few-Mode EDFA for Space Division Multiplexing Wireless Optical Communication

2022

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Relay assisted transmission can compensate atmospheric turbulence, improve transmission distance, and realize communication between non-linear targets in free space optical communication (FSO) system. Space division multiplexing (SDM) greatly improves the channel capacity of FSO system. This paper focuses on the relay assisted transmission oriented to SDM wireless optical communication system. We develop a dual-hop SDM FSO communication model with two spatial mode channels. At the relay, the received optical signals are amplified by the few mode EDFA and forwarded to the destination. Simulation results show that the bit error rate (BER) of the dual-hop SDM system with a few mode EDFA based relay outperforms the single-hop SDM system. Under BER = 𝟏 × 𝟏𝟎 −𝟓 , the power budget is increased by 0.53𝒅𝑩, 1.2 𝒅𝑩, and 4.88 𝒅𝑩, when 𝑪 𝒏 𝟐 = 𝟒 × 𝟏𝟎 −𝟏𝟓 , 𝟕 × 𝟏𝟎 −𝟏𝟓 and 𝟏 × 𝟏𝟎 −𝟏𝟒 , respectively. Moreover, the BER performance is the best when the relay is (originally in the middle of the link) slightly closer to the source. .

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Section: B Channel Modelmentioning

confidence: 99%

Relaying System Based on Few-Mode EDFA for Space Division Multiplexing Wireless Optical Communication

2022

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“…Turbulence phase plates are generated via Fourier Transform method [26]. The basic idea is using atmospheric phase spectrum according to atmospheric turbulence theory to filter Gaussian random noises.…”

Section: B Modelmentioning

confidence: 99%

“…K is the Boltzmann constant, T is the temperature in Kelvin, and R L is the photodetector load resistance. In general, the model for dual-hop transmission system based on FM-EDFA is composed of signal current I s , in (11) and the noise variances in (26) and (27). In the remainder of this paper, the performance comparison between dual-hop transmission system with FM-EDFA and dual-hop transmission system with SM-EDFA will be given where the model for dual-hop transmission system based on SM-EDFA can be obtained when only LP 01 mode is considered at the relay.…”

Section: B Modelmentioning

confidence: 99%

Turbulence-Resistant All Optical Relaying Based on Few-Mode EDFA in Free-Space Optical Systems

Cai

Zhang

Chen

2019

J. Lightwave Technol.

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We investigate the communication performance of a few-mode EDFA based all-optical relaying system for atmospheric channels in this paper. A dual-hop free space optical communication model based on the relay with two-mode EDFA is derived. The BER performance is numerically calculated. Compared with all-optical relaying system with single-mode EDFA, the power budget is increased by 4 dB, 7.5 dB and 11.5 dB at BER = 1×10 -4 under the refractive index structure constant C 2 n = 2×10 -14 , 5×10 -14 and 1×10 -13 respectively when a few mode fiber supporting 4 modes is utilized as the receiving fiber at the destination. The optimal relay location is slightly backward from the middle of the link. The BER performance is the best when mode-dependent gain of FM-EDFA is zero.

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Optimized OAM Laguerre-Gauss Alphabets for Demodulation using Machine Learning

Freitas

Runge

Portugheis

et al. 2020

2020 IEEE 8th International Conference on Photonics (ICP)

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Simulating Atmospheric Turbulence Using a Spatial Light Modulator based on Fourier Transform

Cited by 5 publications

References 0 publications

Relaying System Based on Few-Mode EDFA for Space Division Multiplexing Wireless Optical Communication

Relaying System Based on Few-Mode EDFA for Space Division Multiplexing Wireless Optical Communication

Turbulence-Resistant All Optical Relaying Based on Few-Mode EDFA in Free-Space Optical Systems

Optimized OAM Laguerre-Gauss Alphabets for Demodulation using Machine Learning

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