Results 141 to 150 of about 616,352 (198)

Optical circuitry for free-space interconnections

Applied Optics, 1990
A 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 Interconnects

SPIE Proceedings, 1989
A simple and efficient optical interconnection consisting of only a laser, two lenses, and a detector has been used to connect two high-speed digital circuits separated by over 24 cm. No external laser driver, detector preamplifier, or other interface circuitry was required. The interconnection operates at data rates of 400 Mb/s.
openaire   +1 more source

Free-space optical collinear crossover interconnects

Applied Optics, 1991
Two new optical free-space collinear cross-over interconnect schemes are suggested. The first optical implementation uses mirrors and beam splitters, while the second uses a Fresnel zone plate and lens combination. Some proof-of-principle experimental results are also presented.
Y, Li, B, Ha, G, Eichmann
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Diffractive optics applied to free-space optical interconnects

Applied Optics, 1994
The optimum design of free-space optical interconnection systems utilizing diffractive optics is determined from a practical engineering standpoint for systems ranging from space invariant to fully space variant. System volume is calculated in terms of parameters such as the f-number of the diffractive lens, the wavelength of light, and also the total ...
K S, Urquhart, P, Marchand, Y, Fainman, S H, Lee   +3 more
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Giga Ethernet Free-Space Passive Optical Networks

Fiber and Integrated Optics, 2008
Fully passive optical networks with wavelength division multiplexing capabilities will open the access network to the real broad band. Integration with optical wireless is a further step to add low-cost characteristics with high bandwidth capabilities.
Forin D.M., Di Bartolo S., Tosi Beleffi G.M., Curti F., Cincotti G., Vecchi A., Ragana S., Teixeira A.L.J.   +7 more
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Free Space Optical Communications Link Budget Estimation

Lasers, Sources and Related Photonic Devices, 2010
This paper describes a new methodology of estimating the free space optical communications link budgets to be expected in conditions of severe turbulence. Comparisons will be given between theory and field measurements.
Larry B, Stotts, Paul, Kolodzy, Alan, Pike, Buzz, Graves, Dave, Dougherty, Jeff, Douglass   +5 more
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Telecentric Optics for Free-Space Optical Link

2008 16th IEEE Symposium on High Performance Interconnects, 2008
We describe a telecentric optical system for free-space multichannel optical interconnects. The targeted aggregate data rate is 240 Gb/s. We have a unique implementation of telecentric optics and achieved an optical link that is simple, robust and modular.
Huei Pei Kuo, Robert Walmsley, Lennie Kiyama, Michael Tan, Shih-Yuan Wang   +4 more
openaire   +1 more source

Performance comparison of high-speed long-reach mode division multiplexing-based radio over free space optics transmission system using different modulation formats under the effect of atmospheric turbulence

Optical Engineering: The Journal of SPIE, 2019
. We report the performance comparison of mode division multiplexing (MDM)-based radio over free space optics (RoFSO) transmission system using different modulation formats viz.
Mehtab Singh, J. Malhotra
semanticscholar   +1 more source

2 × 10 Gbit/s–10 GHz Radio over Free Space Optics Transmission System Incorporating Mode Division Multiplexing of Hermite Gaussian Modes

Journal of optical communications, 2019
In this paper, we report the modeling and simulative investigation of a mode division multiplexing (MDM)-based Radio over Free space optics (RoFSO) transmission system.
Mehtab Singh, J. Malhotra
semanticscholar   +1 more source

Review of Studies that Integrate the Free Space Optics with Fiber Optics

2019 IEEE 16th International Conference on Smart Cities: Improving Quality of Life Using ICT & IoT and AI (HONET-ICT), 2019
This paper presents a comprehensive survey on the importance of free space optics (FSO) systems used as last mile for communication systems and their integration with optical fibers. Optical fiber is already being used in the backbone networks due to its
M. Khan, S. Ghafoor, J. Mirza, S. M. Hassan Zaidi   +3 more
semanticscholar   +1 more source