Results 31 to 40 of about 246,737 (191)
Modelling Investigation of Atmospheric Turbulence-Induced Beam Deviation for LEO/GEO FSO Communication Link [PDF]
EPJ Web of ConferencesThe uplink analytical simulation scenario of atmospheric turbulence-induced beam deviation can give the insight needed to understand and create the mitigation techniques that could support novel applications in the fields of free-space optical ...
Al-Juboori Haider
doaj +1 more source
Orbital angular momentum mode-demultiplexing scheme with partial angular receiving aperture [PDF]
, 2015 For long distance orbital angular momentum (OAM) based transmission, the conventional whole beam receiving scheme encounters the difficulty of large aperture due to the divergence of OAM beams.
Chi, Hao +6 more
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BPSK subcarrier intensity modulated free-space optical communications in atmospheric turbulence [PDF]
, 2009 Free-space optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature fluctuations.
Ghassemlooy, Zabih +1 more
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IEEE Photonics Journal, 2018 When an eavesdropper performs an optical beam-splitting attack in a free-space optical communications channel, it is referred to as an optical wiretap channel, which is an extension of Wyner's wiretap channel model.
Tyan-Lin Wang, Ivan B. Djordjevic
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Orbital Angular Momentum Waves: Generation, Detection and Emerging Applications
, 2019 Orbital angular momentum (OAM) has aroused a widespread interest in many fields, especially in telecommunications due to its potential for unleashing new capacity in the severely congested spectrum of commercial communication systems.
Chen, Rui +4 more
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Applied Physics ExpressWe report a coherent laser transmitter for free space optical communications based on multiwavelength coherent beam combining. We performed 5.6 Gbps free-space optical communications using a two-element optical phased array with three wavelengths ...
Eisuke Haraguchi +6 more
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Frontiers in Physics, 2022 Being able to dynamically control the transmitted-beam divergence can bring important advantages in free-space optical communications. Specifically, this technique can help to optimize the overall communications performance when the optimum laser-beam ...
Alberto Carrasco-Casado +11 more
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Classical capacity of the lossy bosonic channel: the exact solution
, 2003 The classical capacity of the lossy bosonic channel is calculated exactly. It is shown that its Holevo information is not superadditive, and that a coherent-state encoding achieves capacity. The capacity of far-field, free-space optical communications is
A. S. Holevo +11 more
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Free space-coupled superconducting nanowire single photon detectors for infrared optical communications [PDF]
, 2015 This paper describes the construction of a cryostat and an optical system with a free-space coupling efficiency of 56.5% +/- 3.4% to a superconducting nanowire single-photon detector (SNSPD) for infrared quantum communication and spectrum analysis.
Bellei, Francesco +6 more
core +2 more sources
Study of the atmospheric turbulence in free space optical communications [PDF]
, 2009 -In this paper the effect of atmospheric turbulence on free space optical (FSO) communications is investigated experimentally by designing a turbulence simulation chamber.
Fan, Z. +4 more
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