Results 81 to 90 of about 246,737 (191)
Review on vortex beams with low spatial coherence
Advances in Physics: X, 2019 Vortex beams with helical phase, carrying phase singularity and orbital angular momentum, have attract great attention in the past decades due to their wide applications in optical communications, optical manipulation, super-resolution imaging and so on.
Xianlong Liu, Jun Zeng, Yangjian Cai
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Deep-learning-based high-resolution recognition of fractional-spatial-mode-encoded data for free-space optical communications. [PDF]
Sci Rep, 2021 Na Y, Ko DK.
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PhotonicsBeyond-5G (B5G) technology plays a pivotal role in the next generation of communication infrastructure to support the future Society 5.0, a concept introduced in the 5th Basic Plan for Science and Technology by the Japanese Cabinet to define the long ...
Alberto Carrasco-Casado +5 more
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Modelling and analysis of FSO ground-to-train communications for straight and curved tracks [PDF]
, 2013 In this work, a free space optical (FSO) link for the ground-to-train communications is proposed. Analytical analysis is carried out for the case of the straight as well as curved rail tracks.
Ghassemlooy, Zabih +3 more
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Lasers for free-space optical communications
III-Vs Review, 2001 AbstractFree-space optics (FSO) - or telecoms systems based on free space lasers (FSLs) - have attractions as an alternative to existing signal conduits such as fibre or wireless. They offer high data rates (about 1 Gb/s) and can be as much as a fifth the cost of underground fibre.
openaire +1 more source
Multi-Actuator Lens Systems for Turbulence Correction in Free-Space Optical Communications
PhotonicsThe implementation of efficient free-space channels is fundamental for both classical and quantum free-space optical (FSO) communication. This can be challenging for fiber-coupled receivers, due to the time variant inhomogeneity of the refractive index ...
Matteo Schiavon +4 more
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Nematic Cells for Digital Light Deflection [PDF]
Smectic A (SmA) materials can be used in non-mechanical, digital beam deflectors (DBDs) as fillers for passive birefringent prisms based on decoupled pairs of electrically controlled, liquid crystalline polarization rotators, like twisted nematic (TN ...
Golovin, Andrii +6 more
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Securing and Auto-Synchronizing Communication over Free-Space Optics Using Quantum Key Distribution and Chaotic Systems [PDF]
Free-Space Optical (FSO) communication provides very large bandwidth, relatively low cost, low power, low mass of implementation, and improved security when compared to conventional Free-Space Radio-Frequency (FSRF) systems. In this paper, we demonstrate
Cooper, Lavida +3 more
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Digital Beam Deflectors Based Partly on Liquid Crystals [PDF]
A digital beam deflector based partly on liquid crystals has been demonstrated as a prototype of a class of optical beam-steering devices that contain no mechanical actuators or solid moving parts.
Golovin, Andrii +5 more
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Fully Photonic Wireless Link for Transmission of Synchronization Signals [PDF]
Radioengineering, 2016 Rapid industrialization and increasing demand of business tools for high-speed communications supports the request for optical communications in free space. Copper cables and related technologies such as cable modems and Digital Subscriber Line (DSL) are
O. Wilfert, P. Barcik, Z. Kolka
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