Results 11 to 20 of about 316,985 (278)

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

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   +1 more source

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

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

Terrestrial Free-Space Optical Communications [PDF]

open access: yes, 2010
Book abstract: Mobile and wireless communications applications have a clear impact on improving the humanity wellbeing. From cell phones to wireless internet to home and office devices, most of the applications are converted from wired into wireless communication.
Z., Ghassemlooy, O., Popoola W.
openaire   +3 more sources

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

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

Optical power allocation for adaptive transmissions in wavelength-division multiplexing free space optical networks

open access: yesDigital Communications and Networks, 2015
Attracting increasing attention in recent years, the Free Space Optics (FSO) technology has been recognized as a cost-effective wireless access technology for multi-Gigabit rate wireless networks.
Hui Zhou, Shiwen Mao, Prathima Agrawal
doaj   +1 more source

Free Space Optics: Current Applications and Future Challenges

open access: yesInternational Journal of Optics, 2015
FSO is a communication system where free space acts as medium between transceivers and they should be in LOS for successful transmission of optical signal. Medium can be air, outer space, or vacuum.
Aditi Malik, Preeti Singh
doaj   +1 more source

Adaptive free space optic system based on visibility detector to overcome atmospheric attenuation

open access: yesResults in Physics, 2019
Free space optics (FSO) provides high data rate by allowing transmission of signal through atmosphere. FSO is affected by different weather conditions. The atmospheric attenuation is caused by two main factors; absorption and scattering.
Muhammad K. El-Nayal   +3 more
doaj   +1 more source

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