Results 11 to 20 of about 60,070 (308)

Analysis of Free-Space Optics Development

open access: yesMetrology and Measurement Systems, 2017
The article presents state of work in technology of free-space optical communications (Free Space Optics − FSO). Both commercially available optical data links and their further development are described.
Mikołajczyk Janusz   +7 more
doaj   +3 more sources

Review on Free Space Optics [PDF]

open access: yesINTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY, 2013
Present era demands high bandwidth with high data rates especially for internet. For high data rates requires high speed transmission medium like optical fiber. To overcome the bottle neck of last mile communication free space optics has emerged as a better option for radio engineers.
Er. Rajeev Thakur   +2 more
openaire   +2 more sources

Roadmap to free space optics [PDF]

open access: yesJournal of the Optical Society of America B, 2020
With the ever-increasing demand for data and the radio frequency spectrum becoming congested, free space optics (FSO) may find a niche for situations where fiber is too expensive or too difficult to install. FSO is a cross-disciplinary field that draws from radio and fiber communication, astronomy, and even quantum optics, and it has seen major ...
Abderrahmen Trichili   +3 more
openaire   +3 more sources

The free space optical interference channel [PDF]

open access: yes2011 IEEE International Symposium on Information Theory Proceedings, 2011
5 pages, 3 figures, Accepted for ISIT 2011, Saint-Petersburg, Russia, v2 has minor ...
Saikat Guha 0001   +2 more
openaire   +2 more sources

Modeling of optical wave propagation through turbulent atmosphere using fractional approach for FSO wireless communication

open access: yesJournal of Physics Communications, 2023
Free space optical (FSO) wireless communication has emerged as a viable alternative to the existing fiber optics and radio frequency (RF) communications due to its ability to operate in unlicensed spectrum, offering huge data handling capacities and ...
Abdullah Nafis Khan   +2 more
doaj   +1 more source

A Survey of Free Space Optics (FSO) Communication Systems, Links, and Networks

open access: yesIEEE Access, 2021
The next generation (NG) optical technologies will unveil certain unique features, namely ultra-high data rate, broadband multiple services, scalable bandwidth, and flexible communications for manifold end-users.
Samir Ahmed Al-Gailani   +6 more
doaj   +1 more source

Multitone Photoconductive Sensors for Free-Space Optics

open access: yesIEEE Photonics Journal, 2010
A multitone frequency-biasing technique is applied to an integrated photoconductive (PC) sensor for application to free-space optical (FSO) communication systems.
X. Jin, J.F. Holzman
doaj   +1 more source

Arrayed Waveguide Grating Spectrometer on 2-µm-thick SOI Platform [PDF]

open access: yesEPJ Web of Conferences, 2023
32-channel arrayed waveguide grating spectrometer (AWG) at 1800 nm is demonstrated on a 2-µm-thick silicon-on-insulator (SOI) platform. The design and simulation of the device are performed using the beam propagation method (BPM) and we obtain the 3-dB ...
Tippinit Janvit   +2 more
doaj   +1 more source

Optical Axis Identification Technique for Free Space Optics Transmission

open access: yesInternational Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, 2017
This paper describes optical axis adjustment technique for an active free space optics transmission system. This system precisely controls the direction of a collimated thin laser beam using a motor driven laser emitting mechanism and positioning ...
Yuki Tashiro   +4 more
doaj   +1 more source

BER and outage probability of DPSK subcarrier intensity modulated free space optics in fully developed speckle. [PDF]

open access: yes, 2009
In this paper a differential phase shift keying (DPSK) subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment.
Ghassemlooy, Zabih   +4 more
core   +1 more source

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