Results 41 to 50 of about 35,798 (210)
, 2009 In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel ...
Ghassemlooy, Zabih +7 more
core +1 more source
Analysis and evaluation of optimum wavelengths for free-space optical transceivers [PDF]
, 2010 The objective of this paper is to analyse and present the latest results obtained for free-space optics (FSO) within the EU COST Action IC-0802 and within the European Space Agency (ESA) contract.
Z. Ghassemlooy +15 more
core +1 more source
The Orbital Angular Momentum Encoding System With Radial Indices of Laguerre–Gaussian Beam
IEEE Photonics Journal, 2018 Orbital angular momentum (OAM) in optical vortices (OV) beams offers a new dimension of space mode because coaxially propagating OV beams with different azimuthal OAM states are mutually orthogonal.
Zhongyi Guo +3 more
doaj +1 more source
Free-space optical communication employing subcarrier modulation and spatial diversity in atmospheric turbulence channel [PDF]
, 2008 An expression for the bit error rate of a multiple subcarrier intensity-modulated atmospheric optical communication system employing spatial diversity is derived. Spatial diversity is used to mitigate scintillation caused by atmospheric turbulence, which
Ghassemlooy, Zabih +9 more
core +1 more source
Optical Free-Space Communication on Earth and in Space regarding Quantum Cryptography Aspects
, 2010 Mobile FSO Communication links have gained signi cant at- tention over the last years due to their increasing maturity. They are used in point to point link scenarios where the high gain in power efficiency and datarate is crucial, compared to state-of ...
Fuchs, Christian +3 more
core +1 more source
Optical Orbital Angular Momentum Shift-Keying Communication Using Direct Demodulation
IEEE Access, 2019 Orbital angular momentum (OAM) shift-keying (SK), which manifests as the rapid switching of OAM modes, is crucial but severely hampered for lacking effective demodulation techniques in OAM communication.
Ying Li +9 more
doaj +1 more source
Free-Space Applications of Silicon Photonics: A Review
Micromachines, 2022 Silicon photonics has recently expanded its applications to delivering free-space emissions for detecting or manipulating external objects. The most notable example is the silicon optical phased array, which can steer a free-space beam to achieve a chip ...
Chung-Yu Hsu +2 more
doaj +1 more source
COGNITIVE MULTI-USER FREE SPACE OPTICAL COMMUNICATION [PDF]
, 2020 Increasing deployment of terrestrial, aerial, and space-based assets designed with more demanding services and applications is dramatically escalating the need for high capacity, high data-rate, adaptive, and flexible communication networks.
Aveta, Federica
core
CTA Telescopes as Deep-Space Lasercom Ground Receivers
IEEE Photonics Journal, 2015 The amount of scientific data to be transmitted from deep-space probes is very limited due to radio-frequency (RF) communications constraints. Free-space optical communication can alleviate this bottleneck, increasing data rate while reducing weight ...
Alberto Carrasco-Casado +2 more
doaj +1 more source
Retrofitting FSO Systems in Existing RF Infrastructure: A Non-Zero-Sum Game Technology
IEEE Open Journal of the Communications Society, 2021 Progress in optical wireless communication (OWC) has unleashed the potential to transmit data in an ultra-fast manner without incurring large investments and bulk infrastructure.
Abderrahmen Trichili +8 more
doaj +1 more source