Results 1 to 10 of about 316,906 (298)

Free Space Optics Transmission Performance Enhancement for Sustaining 5G High Capacity Data Services [PDF]

open access: yesMicromachines, 2022
Enhanced bandwidth issues for 5G system are fruitfully resolved by organizing free space optics (FSO) communication frameworks. The high bandwidth, the maximum number of channel transmission requirements, and high data rate have been boosted during the ...
Mustafa Kamal   +7 more
doaj   +2 more sources

Engineering Gaussian states of light from a planar microcavity

open access: yesSciPost Physics, 2018
Quantum fluids of light in a nonlinear planar microcavity can exhibit antibunched photon statistics at short distances due to repulsive polariton interactions.
Mathias Van Regemortel, Sylvain Ravets, Atac Imamoglu, Iacopo Carusotto, Michiel Wouters
doaj   +4 more sources

Advanced Beam Detection for Free-Space Optics Operating in the Mid-Infrared Spectra [PDF]

open access: yesSensors
The article addresses the challenges of beam position tracking in Free-Space Optical Communication (FSOC) systems. A review of available photodetector technologies is presented, highlighting their operating principles and applications in optical links ...
Janusz Mikolajczyk   +4 more
doaj   +2 more sources

The spatial complexity of optical computing: toward space-efficient design [PDF]

open access: yesNature Communications
Similar to algorithms, which consume time and memory to run, hardware requires resources to function. For devices processing physical waves, implementing operations needs sufficient “space,” as dictated by wave physics.
Yandong Li, Francesco Monticone
doaj   +2 more sources

Improvement of beam-tracker for sensor network with Free Space Optics

open access: yesMeasurement: Sensors, 2021
We study beam trackers using image processing. This function is used for sensor networks using movable optical space communication. However, the beam tracker did not extract the area of the beam normally, and it was often the case that the beam could not
Tomohiro Shinki, Naoki Kagawa
doaj   +1 more source

High Frequency MEMS Capacitive Mirror for Space Applications

open access: yesMicromachines, 2023
Free space optics laser communication using modulating retroreflectors (MR) is a challenging application for an active mirror, due to the high frequencies (>100 kHz) required to enable sufficient data transfer.
Alvise Bagolini   +5 more
doaj   +1 more source

Bootstrapping free-space optical networks [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2005
We introduce a challenging problem in establishing and initially configuring a free space optical (FSO) network. In such networks, it is assumed that each communication node is a base station, including a router and optical transceivers, and its number of transceivers is limited.
null Fang Liu, U. Vishkin, S. Milner
openaire   +1 more source

Free Space Optics Communication for Ultra-High-Speed Train Running in Evacuated Tube

open access: yesApplied Sciences, 2022
This paper develops a novel communication method for an ultra-high-speed train that runs in an evacuated tube. The proposed method significantly reduces the number of needed base stations to provide adequate coverage and data rates.
Hasan Abbas Al-Mohammed, Elias Yaacoub
doaj   +1 more source

FatNet: High-Resolution Kernels for Classification Using Fully Convolutional Optical Neural Networks

open access: yesAI, 2023
This paper describes the transformation of a traditional in silico classification network into an optical fully convolutional neural network with high-resolution feature maps and kernels.
Riad Ibadulla   +2 more
doaj   +1 more source

Performance of Cipher Image Transmission in Free Space Optics Under Foggy Weather

open access: yesIEEE Access, 2023
This paper proposes a new cipher image transmission system in free space optics system (FSO). A secure and effective image cryptosystem algorithm based on the Choquet fuzzy integral (CFI) technique and the integer wavelet transform is utilized. Numerical
Somia A. Abd El-Mottaleb   +6 more
doaj   +1 more source

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