400G+ Wireless Transmission via Free-Space Optics

Guiomar, Fernando P.; Fernandes, Marco A.; Nascimento, J. Leonardo; Monteiro, Paulo P.

doi:10.1109/ecoc52684.2021.9606136

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…The PRBG is used to generate a random bit stream that is used as the data input for the optical fiber link. In this model the PRBS generates a sequence of N bits [11]:…”

Section: Background Of Simulationmentioning

confidence: 99%

Integration of Optical and Free Space Optics Network Architecture for High-Speed Communication in Adverse Weather using suitable Optical Bands

Rahman

Hossain

et al. 2023

IJEER

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Free Space Optics (FSO) is a highly viable solution for high-speed wireless communication and is widely preferred over radio frequency communication systems because of its faster data transmission, no regulatory requirements and highly secure long-range operations. However, the capacity and availability of FSO optical bands are a significant concern in varying atmospheric conditions. Our objective is to enhance network flexibility and expand wireless network coverage in adverse weather conditions by combining optical and FSO links using optical bands C, S, and O. The study analyzed the performance of a hybrid 4 channels FSO-WDM system with a 100GHz or 0.8 nm channel spacing under different conditions, including adverse weather and varying data rates. An attenuation of 0.25 dB/km was fixed, and the system's performance was analyzed up to 3 km. The results showed that as the data rate increased, the system's performance declined, and the O band was the best performer up to 25 Gbit/s. BER values were analyzed at different weather conditions using the Kim model, and the O band consistently outperformed the S and C bands. Eye diagrams were used to evaluate the signal quality, and the O band was shown to perform better than the other two bands, even in adverse weather conditions. Overall, the study suggests that FSO is a viable solution for high-speed wireless communication, particularly when using the O band.

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“…The PRBG is used to generate a random bit stream that is used as the data input for the optical fiber link. In this model the PRBS generates a sequence of N bits [11]:…”

Section: Background Of Simulationmentioning

confidence: 99%

Integration of Optical and Free Space Optics Network Architecture for High-Speed Communication in Adverse Weather using suitable Optical Bands

Rahman

Hossain

et al. 2023

IJEER

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“…High capacity FSO connections can be achieved by employing wavelength division multiplexing (WDM) technology. In particular, the use of coherent optical communications together with advanced modulation formats and digital signal processing 4 is a promising approach that has recently stood out; it enables FSO communications at unprecedented per-channel data rates of up to 1 Tbps 5 and aggregated multichannel data rates of more than 14 Tb/s employing the WDM technology. However, the WDM transmission system in FSO communication demands higher technical indicators, especially for the light source at the transmitting terminal because the signals will experience severe degradation in intensity, phase, and polarization caused by the atmospheric turbulence, especially for long distance communication links 6 .…”

Section: Introductionmentioning

confidence: 99%

Effect of wavelength accuracy of reconstruction-equivalent-chirp laser arrays on performance of wavelength division multiplexing space laser communication system

Li,

Zhang

et al. 2023

Opt. Eng.

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“…This also facilitates the adoption of state-of-the-art highcapacity optical fiber transceivers for FSO applications [12]. Particularly, the use of coherent optical communications together with advanced modulation formats and digital signal processing [27] is a promising approach that is recently standing out, enabling FSO communications at unprecedented per-channel data rates of up to 1 Tbps [28], [29] and aggregated multichannel data rates of more than 14 Tb/s [16], employing wavelength-division multiplexing (WDM). Noteworthy, besides the plethora of recent research-oriented works, coherent FSO systems are already finding their first commercial applications in the rapidly expanding space sector.…”

mentioning

confidence: 99%

“…Following our previous conference paper [27], in this work we provide an in-depth experimental overview on the practically achievable performance of coherent FSO systems, thereby opening an outlook into the opportunities and criticalities of this technology. Throughout the following sections, we will explore the dichotomy between achievable capacity and reliability, experimentally addressing and proposing mitigation solutions for the two key challenges discussed above: atmospheric turbulence and optical beam alignment.…”

mentioning

confidence: 99%

Coherent Free-Space Optical Communications: Opportunities and Challenges

Guiomar

Fernandes

Nascimento

et al. 2022

J. Lightwave Technol.

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The ever-increasing data rate demand for wireless systems is pushing the physical limits of standalone radiofrequency communications, thus fostering the blooming of novel high-capacity optical wireless solutions. This imminent penetration of optical communication technologies into the wireless domain opens up a set of novel opportunities for the development of a new generation of wireless systems providing unprecedented capacity. Unlocking the full potential of free-space optics (FSO) transmission can only be achieved through a seamless convergence between the optical fiber and optical wireless domains. This will allow taking advantage of the staggering progress that has been made on fiber-based communications during the last decades, namely leveraging on the latest generation of Terabit-capable coherent optical transceivers. On the other hand, the development of these high-capacity optical wireless systems still faces a set of critical challenges, namely regarding the impact of atmospheric turbulence and pointing errors. In this work, we provide an in-depth experimental analysis of the main potentialities and criticalities associated with the development of ultra-highcapacity FSO communications, ultimately leading to the longterm (48-hours) demonstration of a coherent FSO transmission system delivering more than 800 Gbps over ∼42 m link length, in an outdoor deployment exposed to time-varying turbulence and meteorological conditions.

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400G+ Wireless Transmission via Free-Space Optics

Cited by 6 publications

References 13 publications

Integration of Optical and Free Space Optics Network Architecture for High-Speed Communication in Adverse Weather using suitable Optical Bands

Integration of Optical and Free Space Optics Network Architecture for High-Speed Communication in Adverse Weather using suitable Optical Bands

Effect of wavelength accuracy of reconstruction-equivalent-chirp laser arrays on performance of wavelength division multiplexing space laser communication system

Coherent Free-Space Optical Communications: Opportunities and Challenges

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