Results 11 to 20 of about 36,044 (265)

Bootstrapping free-space optical networks [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2005
We introduce a challenging problem in establishing and initially configuring a free space optical (FSO) network. In such networks, it is assumed that each communication node is a base station, including a router and optical transceivers, and its number of transceivers is limited.
Fang Liu, Uzi Vishkin, Stuart D. Milner
openaire   +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

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

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

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

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

A survey of free space optical networks

open access: yesDigital Communications and Networks, 2017
Free Space Optical (FSO) networks, also known as optical wireless networks, have emerged as viable candidates for broadband wireless communications in the near future. The range of the potential application of FSO networks is extensive, from home to satellite.
In Keun Son, Shiwen Mao
openaire   +2 more sources

Performance Analysis of a Free Space Optics Link with Multiple Transmitters/Receivers

open access: yesInternational Islamic University Malaysia Engineering Journal, 2012
:  Multiple transmitters/receivers (TX/RX) are used to improve the quality of Free Space Optics (FSO) communication systems. With the current needs of this technology for longer distance communication, the qualitative analysis of the system has become ...
Nur Haedzerin Md Noor   +2 more
doaj   +1 more source

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