Results 21 to 30 of about 39,570 (287)

Breakthroughs in Photonics 2012: Generation of Modulated Optical Signals for Optical Fiber Communications

open access: yesIEEE Photonics Journal, 2013
Recent advances in transmitters for optical fiber communications that exploit the powerful capabilities of digital signal processing and digital-to-analog conversion are reviewed.
J. C. Cartledge, A. S. Karar
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

Signal Degradation and Excess Insertion Loss of Optical Mach–Zehnder Modulators in the Presence of Electronic Dispersion Compensation

open access: yesIEEE Photonics Journal, 2017
Mach–Zehnder (MZ) modulators are widely used in optical transmitters to generate high-speed optical signals. With electronic dispersion compensation (EDC), the driving signals to MZ modulators change from digital to analog, or continuous waveforms.
Xiatao Huang   +6 more
doaj   +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

53 GBd PAM-4 DAC-less low-power (1.5 pJ/b) silicon integrated transmitter [PDF]

open access: yes, 2019
C
Bauwelinck, Johan   +10 more
core   +2 more sources

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

Novel Method for Improving the Capacity of Optical MIMO System Using MGDM [PDF]

open access: yes, 2014
In current local area networks, multimode fibers (MMFs), primarily graded index (GI) MMFs, are the main types of fibers employed for data communications.
Aggoun, A.   +4 more
core   +6 more sources

Multicore Fiber Scenarios Supporting Power Over Fiber in Radio Over Fiber Systems

open access: yesIEEE Access, 2019
We propose the integration of power over fiber in the next generation 5G radio access network front-haul solutions based on spatial division multiplexing with multicore fibers. The different architectures in both shared- and dedicated- core scenarios for
Carmen Vazquez   +6 more
doaj   +1 more source

Effects of crosstalk in WDM optical label switching networks due to wavelength switching of a tunable laser [PDF]

open access: yes, 2006
rosstalk caused by switching events in fast tunable lasers in an optical label switching (OLS) system is investigated for the first time. A wavelength-division-multiplexed OLS system based on subcarrier multiplexed labels is presented which employs a 40 ...
Barry, Liam P.   +6 more
core   +1 more source

Graphene-based PAM-4 modulator compatible with CMOS platform operating over DWDM C-Band

open access: yesResults in Optics, 2021
The next generation of optical transport networks requires a small footprint, high channel capacity, low cost, and technology capabilities driven by CMOS technology.
M.M. de Carvalho   +2 more
doaj   +1 more source

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