Results 21 to 30 of about 3,038,754 (316)

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

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

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

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

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

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

Multi-Channel Deficit Round-Robin Scheduling for Hybrid TDM/WDM Optical Networks [PDF]

open access: yes, 2012
In this paper we propose and investigate the performance of a multi-channel scheduling algorithm based on the well-known deficit round-robin (DRR), which we call multi-channel DRR (MCDRR).
Kim, K. S., Sathiyanarayanan, M.
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

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

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