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Optical circuitry for free-space interconnections
Applied Optics, 1990A means for losslessly implementing arbitrarily space-variant optical interconnections in free space without sacrificing optical space-bandwidth product or power is described. The technique uses space-variant mirrors and polarization beam splitters to separate and combine sets of device output spots, where a different interconnection operation is ...
F B, McCormick, M E, Prise
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Free Space Optical Multicast Crossbar
Journal of Optical Communications and Networking, 2015Enabling multicast in optical networks requires the use of multicast-capable optical switches. In this paper, we propose a new class of multicast-capable free space optical (FSO) switches. Our design exploits nonmovable tri-state switching elements (T-SEs) that support signal splitting and switching simultaneously and seamlessly, and thus the separate ...
Abdelbaset S. Hamza +2 more
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SPIE Proceedings, 1990
Free-space optical components and systems can be fabricated using planar techniques such as pattern generation using an electron-beam writer, photolithography, reactive ion etching and thin film deposition. This allows to integrate several optical components such as lenses and beamsplitters on one side of a single substrate [1]; see Fig. 1.
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Free-space optical components and systems can be fabricated using planar techniques such as pattern generation using an electron-beam writer, photolithography, reactive ion etching and thin film deposition. This allows to integrate several optical components such as lenses and beamsplitters on one side of a single substrate [1]; see Fig. 1.
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On space-time coding for free-space optical systems
IEEE Transactions on Communications, 2010Atmospheric turbulence-induced fading is one of the main impairments affecting free-space optics (FSO) communications. In this paper, we consider FSO systems with intensity modulation and direct detection (IM/DD) and derive a closed- form expression for the asymptotic pairwise error probability of general FSO space-time codes (STCs) for two lasers and ...
Ehsan Bayaki, Robert Schober
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Classical capacity of free-space optical communication
Quantum Information and Computation, 2004The classical-information capacity of lossy bosonic channels is studied, with emphasis on the far-field free space channel.
GIOVANNETTI, VITTORIO +6 more
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Free Space Passive Optical Network
2018This paper proposes free space passive optical network (FSPON) as a potential candidate of high data rate access network based on optical wireless transmission. FSPON could be considered for indoor as well as outdoor deployments. Pending the progress in FSO range, it is appropriate for short range communication network.
Ahmed D. Kora +3 more
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Free space optical wireless network
2011 13th International Conference on Transparent Optical Networks, 2011This talk explore an over the air optical wireless network and to create a network architecture for reliable high data rate free space optical networks that can interoperate with traditional wired and fiber networks. These networks will have significant impact for applications between ships, airborne vehicles, satellites and land-based cloud computing ...
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Miniaturization of free space optical systems
Applied Optics, 2010Coherent illumination enables not only integrated optics, but also miniaturized free-space optics that takes advantage of the amplitude and phase control afforded by optical microelectromechanical systems (MEMS) and photonic crystals. These technologies also provide a practical and cost-effective means for integration and packaging of optical systems ...
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Jamming Threats in Free-Space Optics
IEEE Communications Magazine, 2022Pratiti Paul, Manav R. Bhatnagar
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Optical communication in free space
SPIE Proceedings, 2008The success of free-space optical links operating indoors or in the atmosphere or deep space shows a good perspective of the technology. There is no doubt that free-space technology is ready for wide practical application. Optical links have several advantages in comparison with radio links, namely high transmission rates and high security.
Otakar Wilfert +2 more
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