Results 31 to 40 of about 3,041,315 (395)

Comparison of Segmented and Traveling-Wave Electro-Optical Transmitters Based on Silicon Photonics Mach-Zehnder Modulators

open access: yesPrague Stringology Conference, 2018
This paper presents a brief study of the two most commonly used topologies − segmented and traveling-wave − for realizing monolithically integrated electro-optical transmitters consisting of Si-photonics Mach-Zehnder modulators and their electrical ...
Alexandru Giuglea   +7 more
semanticscholar   +1 more source

Multi-user indoor optical wireless communication system channel control using a genetic algorithm [PDF]

open access: yes, 2011
A genetic algorithm controlled multispot transmitter is demonstrated that is capable of optimising the received power distribution for randomly aligned single element receivers in multiple fully diffuse optical wireless communications systems with ...
M.S. Leeson   +7 more
core   +1 more source

Receiver alignment dependence of a GA controlled optical wireless transmitter [PDF]

open access: yes, 2009
A genetic algorithm controlled multispot transmitter is demonstrated to be capable of optimizing the received power distribution for single element receivers in fully diffuse mobile indoor optical wireless systems.
Leeson, Mark S.   +2 more
core   +1 more source

Performance Analysis of MPSK FSO Communication Based on the Balanced Detector in a Fiber-Coupling System

open access: yesIEEE Access, 2019
An average bit error ratio (ABER) performance model for multiple phase shift keying (MPSK) based on a balanced detector with a fiber is presented in the free-space link for the first time.
Haifeng Yao   +8 more
doaj   +1 more source

Use of Negative Impedance Converters for Bandwidth Extension of Optical Transmitters

open access: yesIEEE Open Journal of Circuits and Systems, 2021
The design and advantages of a novel light emitting diode (LED) bandwidth extension technique, based on the adoption of negative impedance converters (NICs), are discussed in the context of visible light communication systems.
Amany Kassem, Izzat Darwazeh
doaj   +1 more source

Synchronization of a WDM Packet-Switched Slotted Ring [PDF]

open access: yes, 2007
In this paper, we present two different strategies of slot synchronization in wavelength-division-multiplexing (WDM) packet-switched slotted-ring networks.
Carzaniga, D.   +11 more
core   +1 more source

Multiple Transmitters for Gain Saturated Pre-Amplified FSO Communication Systems Limited by Strong Atmospheric Turbulence and Pointing Error

open access: yesIEEE Access, 2023
The use of multiple transmitters in a turbulent free-space optical (FSO) communication link can enhance the systems performance because greater received power can improve receiver sensitivity. Nevertheless, the effect of having more power at the receiver
Jeremiah Oluwatosin Bandele   +3 more
doaj   +1 more source

Compact optical transmitters for CubeSat free-space optical communications

open access: yesPhotonics West - Lasers and Applications in Science and Engineering, 2015
We present the results of an architectural trade study and prototype implementation of an optical transmitter suitable for resource-constrained CubeSats.
Ryan W Kingsbury   +2 more
semanticscholar   +1 more source

Recent Advances in Optical Sideband Transmitters

open access: yes, 2021
Optical single sideband (SSB) technique has recently attracted considerable attentions as an alternative transmitter for metro-haul applications. The optical SSB technique can double the spectral efficiency and is free from dispersion-induced power ...
Kim, Hoon   +7 more
core   +1 more source

Introductory survey for wireless infrared communications

open access: yesThe Journal of Engineering, 2014
Wireless infrared communications can be defined as the propagation of light waves in free space using infrared radiation whose range is 400–700 nm.
Munsif Ali Jatoi, Nidal Kamel
doaj   +1 more source

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