Coherent free-space optical communications: Opportunities and challenges

FP Guiomar, MA Fernandes, JL Nascimento… - Journal of Lightwave …, 2022 - opg.optica.org
The ever-increasing data rate demand for wireless systems is pushing the physical limits of
standalone radio-frequency communications, thus fostering the blooming of novel high …

A networking perspective on starlink's self-driving leo mega-constellation

Y Li, H Li, W Liu, L Liu, W Zhao, Y Chen, J Wu… - Proceedings of the 29th …, 2023 - dl.acm.org
Low-earth-orbit (LEO) satellite mega-constellations, such as SpaceX Starlink, are under
rocket-fast deployments and promise broadband Internet to remote areas that terrestrial …

A case for stateless mobile core network functions in space

Y Li, H Li, W Liu, L Liu, Y Chen, J Wu, Q Wu… - Proceedings of the …, 2022 - dl.acm.org
Is it worth and feasible to push mobile core network functions to low-earth-orbit (LEO)
satellite mega-constellations? While this paradigm is being tested in space and promises …

Free-space terabit optical interconnects

MA Fernandes, PP Monteiro… - Journal of Lightwave …, 2022 - opg.optica.org
The continuous growth of Internet data traffic is progressively increasing the pressure over
wireless access technologies. To overcome the imminent bandwidth bottleneck, free-space …

Design and optimization of high-speed receivers for 6G optical wireless networks

E Sarbazi, H Kazemi, M Crisp… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
To achieve multi-Gb/s data rates in 6G optical wireless access networks based on narrow
infrared (IR) laser beams, a high-speed receiver with two key specifications is needed: a …

Requirements and solutions for robust beam alignment in fiber-coupled free-space optical systems

MM Freitas, MA Fernandes, PP Monteiro, FP Guiomar… - Photonics, 2023 - mdpi.com
The continuous growth of Internet data traffic is pushing the current radio-frequency wireless
technologies up to their physical limits. To overcome the upcoming bandwidth bottleneck …

Polarization-separating Alvarez metalens

M Hada, H Adegawa, K Aoki, S Ikezawa, K Iwami - Optics Express, 2024 - opg.optica.org
The rapid advancements in optical communication technologies have highlighted traditional
optical components' limitations, particularly in size, adaptability, and integration capabilities …

Intelligent Reflecting Surface-Assisted Free Space Optical Quantum Communications

NK Kundu, MR McKay, R Murch… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This paper studies intelligent reflecting surface (IRS)-assisted free space optical (FSO)
quantum communication systems. An IRS can relax the requirement of a line-of-sight (LoS) …

Channel prediction for intelligent FSO transmission system

S Song, Y Liu, T Xu, S Liao, L Guo - Optics Express, 2021 - opg.optica.org
Free space optical (FSO) communication has attracted significant attention due to its high
transmission rate and information security. Nevertheless, the FSO link is sensitive to various …

Seamless rate adaptation for wide SNR range in FSO systems based on rate compatible modulation

T Shu, Y Zou, Q Fan, T Mei, X Dai, C Liu, M Cheng… - Optics Letters, 2024 - opg.optica.org
We propose and experimentally demonstrate a large-range and seamless rate-adaptive free-
space optical (FSO) scheme based on rate compatible modulation (RCM). It utilizes a …