Dynamique Non Lineaire Dans Les Oscillateurs Optoelectroniques Micro Ondes

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Dynamique non-linéaire dans les oscillateurs optoélectroniques micro-ondes

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Author : Abdelhamid Hmima
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (18 download)

Book Synopsis Dynamique non-linéaire dans les oscillateurs optoélectroniques micro-ondes by : Abdelhamid Hmima

Download or read book Dynamique non-linéaire dans les oscillateurs optoélectroniques micro-ondes written by Abdelhamid Hmima and published by . This book was released on 2012 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ces travaux s'inscrivent dans les efforts menés pour améliorer les performances des Oscillateur Électro-optique ou Opto electronic Oscillator (OEO) à ligne à retard à fibre optique permettant de générer un signal dans la gamme micro-onde. Il a été récemment introduit et a attiré l'attention de plusieurs équipes de recherche dans le monde à cause de sa grande pureté spectrale, notamment pour les applications radars micro-ondes et les systèmes de géolocalisation. Nous avons étudié cette architecture classique utilisant une ligne à retard optique, afin d'aborder les spécificités de l'OEO à l'interface du domaine temps-fréquence et de l'optique. Les niveaux de stabilité de fréquence délivrées par l'OEO sont intéressants. C'est pourquoi nous avons exploré les potentialités d'une nouvelle architecture d'OEO qui tire profit de la dynamique non-linéaire. En effet cette architecture permet de délivrer en plus du signal micro-onde, des impulsions optiques de très courte durée et de faible gigue temporelle. Cela est rendu possible par les propriétés spectrales de l'OEO et par l'introduction des techniques de compression temporelle et de régénération optique. Ces impulsions fonctionnent aux longueurs d'onde des télécommunications, en particulier à1.55 ffm. Ce type d'OEO à compression peut être dédié aux systèmes de multiplexage temporel. Nous avons déterminé expérimentalement une pureté spectrale respectivement de -60 et -140 dBc/Hz à 101 et 2ff104 Hz de la porteuse à 10 GHz. Les impulsions optiques générées à un taux de répétition de 10 GHz ont des durées de 4.1 ps, avec une gigue temporelle respectivement de 2.7 et 83 fs dans les intervalles [1 - 10 kHz] et [10 Hz - 100 kHz]. Cela ouvre la voie à l'utilisation d'autres phénomènes non-linéaires pour améliorer la pureté spectrale des oscillateurs micro-ondes.

Analyse et caractérisation non-linéaire des oscillateurs micro-ondes à MESFET

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Author : Pierre S. Berini
Publisher :
ISBN 13 :
Total Pages : 462 pages
Book Rating : 4.:/5 (537 download)

Book Synopsis Analyse et caractérisation non-linéaire des oscillateurs micro-ondes à MESFET by : Pierre S. Berini

Download or read book Analyse et caractérisation non-linéaire des oscillateurs micro-ondes à MESFET written by Pierre S. Berini and published by . This book was released on 1992 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Etudes Spectrales Du Bruit de Phase Dans Les Oscillateurs Opto-électroniques Micro-ondes À Ligne À Retard

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Author : Kirill Volyanskiy
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (495 download)

Book Synopsis Etudes Spectrales Du Bruit de Phase Dans Les Oscillateurs Opto-électroniques Micro-ondes À Ligne À Retard by : Kirill Volyanskiy

Download or read book Etudes Spectrales Du Bruit de Phase Dans Les Oscillateurs Opto-électroniques Micro-ondes À Ligne À Retard written by Kirill Volyanskiy and published by . This book was released on 2009 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is dedicated to the study of phase noise in fiber optic delay line optoelectronic oscillators (OEO). This particular class of microwave range oscillator was recently introduced (1994), and intensively explored due to its very attractive potential for ultra-low short term phase noise features. It is intended for applications to Radar, Space, and high bit rate optical telecommunications. On the basis of a time domain theoretical approach, the dynamic and the phase noise properties of the OEO was investigated. A stochastic, nonlinear, delay differential equation was derived directly from the description of the oscillator loop chain: the most relevant nonlinearity of a Mach-Zehnder electro-optic modulator, the km-long fiber delay line, the dynamics ruled by the microwave amplitude selective filter, and the different additive and multiplicative noise sources (laser, photodiode, RF amplifier). The linearization of the model around the OEO monomode operating point led to the theoretical description of the phase and amplitude noise performances. Those theoretical results are compared with experimental investigations, covering both the deviœ noise characteristics, as weil as the whole oscillator. Specific high sensitivity noise measurement techniques were developed using optoelectronic architectures of the measurement bench on the one hand, and correlation principles on the other hand. Avery good agreement between experiment and theory is obtained, leading to a quantitative description of the OEO phase noise features, and highlighting the most relevant noise sources limiting the performances. Selected devices allowed to achieve an OEO phase noise as low as -143 dBrad[au carré]/Hz at 10 kHz from the carrier at 10 GHz. The remaining limiting noise sources are finally discussed, and various possible improvements are suggested for future OEOs.

Fundamentals of Photonics

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Author : Bahaa E. A. Saleh
Publisher : John Wiley & Sons
ISBN 13 : 1119702119
Total Pages : 2134 pages
Book Rating : 4.1/5 (197 download)

Book Synopsis Fundamentals of Photonics by : Bahaa E. A. Saleh

Download or read book Fundamentals of Photonics written by Bahaa E. A. Saleh and published by John Wiley & Sons. This book was released on 2020-03-04 with total page 2134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Photonics A complete, thoroughly updated, full-color third edition Fundamentals of Photonics, Third Edition is a self-contained and up-to-date introductory-level textbook that thoroughly surveys this rapidly expanding area of engineering and applied physics. Featuring a blend of theory and applications, coverage includes detailed accounts of the primary theories of light, including ray optics, wave optics, electromagnetic optics, and photon optics, as well as the interaction of light and matter. Presented at increasing levels of complexity, preliminary sections build toward more advanced topics, such as Fourier optics and holography, photonic-crystal optics, guided-wave and fiber optics, LEDs and lasers, acousto-optic and electro-optic devices, nonlinear optical devices, ultrafast optics, optical interconnects and switches, and optical fiber communications. The third edition features an entirely new chapter on the optics of metals and plasmonic devices. Each chapter contains highlighted equations, exercises, problems, summaries, and selected reading lists. Examples of real systems are included to emphasize the concepts governing applications of current interest. Each of the twenty-four chapters of the second edition has been thoroughly updated.

ICREEC 2019

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Author : Ahmed Belasri
Publisher : Springer Nature
ISBN 13 : 9811554447
Total Pages : 659 pages
Book Rating : 4.8/5 (115 download)

Book Synopsis ICREEC 2019 by : Ahmed Belasri

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Photonic Reservoir Computing

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Author : Daniel Brunner
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110582112
Total Pages : 391 pages
Book Rating : 4.1/5 (15 download)

Book Synopsis Photonic Reservoir Computing by : Daniel Brunner

Download or read book Photonic Reservoir Computing written by Daniel Brunner and published by Walter de Gruyter GmbH & Co KG. This book was released on 2019-07-08 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photonics has long been considered an attractive substrate for next generation implementations of machine-learning concepts. Reservoir Computing tremendously facilitated the realization of recurrent neural networks in analogue hardware. This concept exploits the properties of complex nonlinear dynamical systems, giving rise to photonic reservoirs implemented by semiconductor lasers, telecommunication modulators and integrated photonic chips.

Optical Properties Of Graphene

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Author : Rolf Binder
Publisher : World Scientific
ISBN 13 : 9813148764
Total Pages : 517 pages
Book Rating : 4.8/5 (131 download)

Book Synopsis Optical Properties Of Graphene by : Rolf Binder

Download or read book Optical Properties Of Graphene written by Rolf Binder and published by World Scientific. This book was released on 2016-11-11 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive state-of-the-art overview of the optical properties of graphene. During the past decade, graphene, the most ideal and thinnest of all two-dimensional materials, has become one of the most widely studied materials. Its unique properties hold great promise to revolutionize many electronic, optical and opto-electronic devices. The book contains an introductory tutorial and 13 chapters written by experts in areas ranging from fundamental quantum mechanical properties to opto-electronic device applications of graphene.

Control of Self-Organizing Nonlinear Systems

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Author : Eckehard Schöll
Publisher : Springer
ISBN 13 : 3319280287
Total Pages : 478 pages
Book Rating : 4.3/5 (192 download)

Book Synopsis Control of Self-Organizing Nonlinear Systems by : Eckehard Schöll

Download or read book Control of Self-Organizing Nonlinear Systems written by Eckehard Schöll and published by Springer. This book was released on 2016-01-22 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book summarizes the state-of-the-art of research on control of self-organizing nonlinear systems with contributions from leading international experts in the field. The first focus concerns recent methodological developments including control of networks and of noisy and time-delayed systems. As a second focus, the book features emerging concepts of application including control of quantum systems, soft condensed matter, and biological systems. Special topics reflecting the active research in the field are the analysis and control of chimera states in classical networks and in quantum systems, the mathematical treatment of multiscale systems, the control of colloidal and quantum transport, the control of epidemics and of neural network dynamics.

High Speed Optical Communications

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Author : Roberto Sabella
Publisher : Springer Science & Business Media
ISBN 13 : 1461552753
Total Pages : 327 pages
Book Rating : 4.4/5 (615 download)

Book Synopsis High Speed Optical Communications by : Roberto Sabella

Download or read book High Speed Optical Communications written by Roberto Sabella and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Speed Optical Communications provides a comprehensive coverage of the design and modelling of the devices and systems required for optical communication networks. It will prove to be the essential reference text for those engineers implementing and designing such networks and is one of the few works dealing with modelling and simulation of optical links at the levels both of devices and of systems. Simulation experiments and results are included, as are details of devices currently under development in research laboratories. Covers both the technical details of optical devices and their behaviour in complex systems; Includes results of applications experiments. Optical and telecommuntications scientists working in research and development and design engineers working in the field will find this text to be an indispensable resource.

Experimental Chaos

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Author : Stefano Boccaletti
Publisher : A I P Press
ISBN 13 :
Total Pages : 384 pages
Book Rating : 4.F/5 ( download)

Book Synopsis Experimental Chaos by : Stefano Boccaletti

Download or read book Experimental Chaos written by Stefano Boccaletti and published by A I P Press. This book was released on 2004-12-14 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 8th Experimental Chaos Conference again demonstrated the broad spectrum of areas where nonlinear dynamics plays an important role, such as circuits, hydrodynamics, optics, chemistry, fracture dynamics, neuroscience, and cognitive science. Additional contributions outline the trends for development and application of concepts and techniques of nonlinear dynamics.

Journal de physique

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Author :
Publisher :
ISBN 13 :
Total Pages : 446 pages
Book Rating : 4.X/5 (6 download)

Book Synopsis Journal de physique by :

Download or read book Journal de physique written by and published by . This book was released on 1999 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Laser Dynamics

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Author : Thomas Erneux
Publisher : Cambridge University Press
ISBN 13 : 9780521830409
Total Pages : 376 pages
Book Rating : 4.8/5 (34 download)

Book Synopsis Laser Dynamics by : Thomas Erneux

Download or read book Laser Dynamics written by Thomas Erneux and published by Cambridge University Press. This book was released on 2010-04-29 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap between laser physics and applied mathematics, this book offers a new perspective on laser dynamics. Combining fresh treatments of classic problems with up-to-date research, asymptotic techniques appropriate for nonlinear dynamical systems are shown to offer a powerful alternative to numerical simulations. The combined analytical and experimental description of dynamical instabilities provides a clear derivation of physical formulae and an evaluation of their significance. Starting with the observation of different time scales of an operating laser, the book develops approximation techniques to systematically explore their effects. Laser dynamical regimes are introduced at different levels of complexity, from standard turn-on experiments to stiff, chaotic, spontaneous or driven pulsations. Particular attention is given to quantitative comparisons between experiments and theory. The book broadens the range of analytical tools available to laser physicists and provides applied mathematicians with problems of practical interest, making it invaluable for graduate students and researchers.

Introduction to Algorithms, third edition

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Author : Thomas H. Cormen
Publisher : MIT Press
ISBN 13 : 0262258102
Total Pages : 1313 pages
Book Rating : 4.2/5 (622 download)

Book Synopsis Introduction to Algorithms, third edition by : Thomas H. Cormen

Download or read book Introduction to Algorithms, third edition written by Thomas H. Cormen and published by MIT Press. This book was released on 2009-07-31 with total page 1313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest edition of the essential text and professional reference, with substantial new material on such topics as vEB trees, multithreaded algorithms, dynamic programming, and edge-based flow. Some books on algorithms are rigorous but incomplete; others cover masses of material but lack rigor. Introduction to Algorithms uniquely combines rigor and comprehensiveness. The book covers a broad range of algorithms in depth, yet makes their design and analysis accessible to all levels of readers. Each chapter is relatively self-contained and can be used as a unit of study. The algorithms are described in English and in a pseudocode designed to be readable by anyone who has done a little programming. The explanations have been kept elementary without sacrificing depth of coverage or mathematical rigor. The first edition became a widely used text in universities worldwide as well as the standard reference for professionals. The second edition featured new chapters on the role of algorithms, probabilistic analysis and randomized algorithms, and linear programming. The third edition has been revised and updated throughout. It includes two completely new chapters, on van Emde Boas trees and multithreaded algorithms, substantial additions to the chapter on recurrence (now called “Divide-and-Conquer”), and an appendix on matrices. It features improved treatment of dynamic programming and greedy algorithms and a new notion of edge-based flow in the material on flow networks. Many exercises and problems have been added for this edition. The international paperback edition is no longer available; the hardcover is available worldwide.

Flexoelectricity in Liquid Crystals

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Author : Agnes Buka
Publisher : World Scientific
ISBN 13 : 1848167997
Total Pages : 299 pages
Book Rating : 4.8/5 (481 download)

Book Synopsis Flexoelectricity in Liquid Crystals by : Agnes Buka

Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.

The Supercontinuum Laser Source

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Author : Robert R. Alfano
Publisher : Springer Science & Business Media
ISBN 13 : 0387250972
Total Pages : 552 pages
Book Rating : 4.3/5 (872 download)

Book Synopsis The Supercontinuum Laser Source by : Robert R. Alfano

Download or read book The Supercontinuum Laser Source written by Robert R. Alfano and published by Springer Science & Business Media. This book was released on 2006-02-14 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of a classic in the field has been expanded and enriched with new content and updated references. The book covers the fundamental principles and surveys research of current thinkers and experts in the field with updated references of the key breakthroughs over the past decade and a half.

Modern Surface Organometallic Chemistry

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Author : Jean-Marie Basset
Publisher : John Wiley & Sons
ISBN 13 : 3527627103
Total Pages : 725 pages
Book Rating : 4.5/5 (276 download)

Book Synopsis Modern Surface Organometallic Chemistry by : Jean-Marie Basset

Download or read book Modern Surface Organometallic Chemistry written by Jean-Marie Basset and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.

Introduction to ISDN

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Author :
Publisher : Wiley-Blackwell
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 ( download)

Book Synopsis Introduction to ISDN by :

Download or read book Introduction to ISDN written by and published by Wiley-Blackwell. This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: