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Conception Et Realisation Damplificateurs Optiques A Semi Conducteur Independant De La Polarisation
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Book Synopsis CONCEPTION ET REALISATION D'AMPLIFICATEURS OPTIQUES A SEMI-CONDUCTEUR INDEPENDANT DE LA POLARISATION by : BOUMEDIENNE.. MERSALI
Download or read book CONCEPTION ET REALISATION D'AMPLIFICATEURS OPTIQUES A SEMI-CONDUCTEUR INDEPENDANT DE LA POLARISATION written by BOUMEDIENNE.. MERSALI and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS PRESENTONS DANS CETTE THESE, L'ETUDE ET LA REALISATION D'AMPLIFICATEURS OPTIQUES A SEMI-CONDUCTEURS (AOSC), DESTINES A ETRE UTILISES COMME REPETEURS DANS LES SYSTEMES DE TELECOMMUNICATION PAR FIBRE OPTIQUE MONOMODE AFIN DE COMPENSER LES PERTES EN LIGNES DUES A L'ATTENUATION INTRINSEQUE DE LA FIBRE. LE MEMOIRE DE THESE COMPREND TROIS PARTIES: DANS LA PREMIERE PARTIE, NOUS AVONS RESUME LES PRINCIPALES CARACTERISTIQUES DES AOSC EN INSISTANT TOUT PARTICULIEREMENT SUR L'INSENSIBILITE A LA POLARISATION QUI EST L'UNE DES PRINCIPALES EXIGENCES DES APPLICATIONS SYSTEMES. NOUS DISCUTONS LES CHOIX ADOPTES CONCERNANT LA STRUCTURE TECHNOLOGIQUE DES AOSC. DANS LA SECONDE PARTIE, NOUS PRESENTONS LES DIFFERENTES METHODES PERMETTANT DE S'AFFRANCHIR DE L'EFFET DE CAVITE PEROT-FABRY DES AOSC. NOUS METTONS L'ACCENT SUR LE DEVELOPPEMENT DES TRAITEMENTS ANTIREFLET, CES DERNIERS ETANT NECESSAIRES A LA REALISATION D'AOSC QUELLES QUE SOIENT LES SOLUTIONS TECHNOLOGIQUES CHOISIES PAR AILLEURS. DANS LA DERNIERE PARTIE, NOUS PRESENTONS LES BANCS DE CARACTERISTION MIS AU POINT AU COURS DE CETTE THESE AINSI QUE LES PRINCIPAUX RESULTATS EXPERIMENTAUX OBTENUS. PARMI CEUX-CI, NOTONS LA REALISATION D'AOSC INSENSIBLES A LA POLARISATION PRESENTANT UN GAIN SIMPLE PASSAGE ELEVE (25 A 30 DB) POUR UN COURANT D'INJECTION DE SEULEMENT 50 MA. CES RESULTATS ONT ETE OBTENUS GRACE A LA REALISATION DE COEFFICIENTS DE REFLEXION INFERIEURS A 1.10##4 SIMULTANEMENT SUR LES MODES TE ET TM EN UTILISANT UN ANTIREFLET BICOUCHE DE TYPE TIO#2/SIO#2
Book Synopsis CONTRIBUTION A L'ETUDE ET A LA REALISATION D'AMPLIFICATEURS OPTIQUES A SEMICONDUCTEUR by : PIERRE.. DOUSSIERE
Download or read book CONTRIBUTION A L'ETUDE ET A LA REALISATION D'AMPLIFICATEURS OPTIQUES A SEMICONDUCTEUR written by PIERRE.. DOUSSIERE and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJECTIF DE CETTE ETUDE EST LA DETERMINATION DU PARAMETRE D'EMISSION SPONTANEE DANS UN AMPLIFICATEUR A ONDE QUASI-PROGRESSIVE A SEMICONDUCTEUR INGAASP DONT LE MAXIMUM DE GAIN EST CENTRE A 1,5 M. UNE METHODE EST PROPOSEE BASEE SUR LA MESURE DU BRUIT DE BATTEMENT ENTRE UN SIGNAL COHERENT AMPLIFIE ET L'EMISSION SPONTANEE DANS LE BARITE DU SIGNAL
Book Synopsis Microwave Scanning Antennas: Apertures by : Robert C. Hansen
Download or read book Microwave Scanning Antennas: Apertures written by Robert C. Hansen and published by . This book was released on 1964 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Communications and Cryptography by : Alexander V. Sergienko
Download or read book Quantum Communications and Cryptography written by Alexander V. Sergienko and published by CRC Press. This book was released on 2018-10-03 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy. Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography. The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches. Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.
Book Synopsis Ultra Wide Band Antennas by : Xavier Begaud
Download or read book Ultra Wide Band Antennas written by Xavier Begaud and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.
Download or read book Color Television Receivers written by and published by . This book was released on 1978 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report to the President on investigation no. 332-95 under section 332 of the Tariff Act of 1930, as amended.
Download or read book MIMO written by Alain Sibille and published by Academic Press. This book was released on 2010-12-03 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA) - The first book to show how MIMO principles can be implemented in today's mobile broadband networks and components - Explains and solves some of the practical difficulties that arise in designing and implementing MIMO systems - Both theory and implementation sections are written in the context of the most recent standards: IEEE 802.11n (WiFi); IEEE 802.16 (WIMAX); 4G networks (3GPP/3GPP2, LTE)
Book Synopsis Low Frequency Scattering by : George Dassios
Download or read book Low Frequency Scattering written by George Dassios and published by Oxford University Press. This book was released on 2000 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scattering theory deals with the interactions of waves with obstacles in their path, and low frequency scattering occurs when the obstacles involved are very small. This book gives an overview of the subject for graduates and researchers, for the first time unifying the theories covering acoustic, electromagnetic and elastic waves.
Book Synopsis Signal Processing for Communications by : Paolo Prandoni
Download or read book Signal Processing for Communications written by Paolo Prandoni and published by Collection Savoir suisse. This book was released on 2008-06-17 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a novel, less classical approach to the subject, the authors have written a book with the conviction that signal processing should be taught to be fun. The treatment is therefore less focused on the mathematics and more on the conceptual aspects, the idea being to allow the readers to think about the subject at a higher conceptual level, thus building the foundations for more advanced topics. The book remains an engineering text, with the goal of helping students solve real-world problems. In this vein, the last chapter pulls together the individual topics as discussed throughout the book into an in-depth look at the development of an end-to-end communication system, namely, a modem for communicating digital information over an analog channel.
Book Synopsis Pervasive Mobile and Ambient Wireless Communications by : Roberto Verdone
Download or read book Pervasive Mobile and Ambient Wireless Communications written by Roberto Verdone and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reporting the findings of COST 2100, a major European intergovernmental project, this volume offers system designers a good source of guidelines based on channel characterization and measurement-based modeling, as well as worthwhile ideas for future research.
Book Synopsis Nuclear Power Plant Control and Instrumentation - 1982 by : International Atomic Energy Agency
Download or read book Nuclear Power Plant Control and Instrumentation - 1982 written by International Atomic Energy Agency and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Governance, Regulation and Powers on the Internet by : Eric Brousseau
Download or read book Governance, Regulation and Powers on the Internet written by Eric Brousseau and published by Cambridge University Press. This book was released on 2012-04-23 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interdisciplinary survey of the issues surrounding the governance of the Internet.
Book Synopsis The Physics of Information Technology by : Neil Gershenfeld
Download or read book The Physics of Information Technology written by Neil Gershenfeld and published by Cambridge University Press. This book was released on 2000-10-16 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Physics of Information Technology explores the familiar devices that we use to collect, transform, transmit, and interact with electronic information. Many such devices operate surprisingly close to very many fundamental physical limits. Understanding how such devices work, and how they can (and cannot) be improved, requires deep insight into the character of physical law as well as engineering practice. The book starts with an introduction to units, forces, and the probabilistic foundations of noise and signalling, then progresses through the electromagnetics of wired and wireless communications, and the quantum mechanics of electronic, optical, and magnetic materials, to discussions of mechanisms for computation, storage, sensing, and display. This self-contained volume will help both physical scientists and computer scientists see beyond the conventional division between hardware and software to understand the implications of physical theory for information manipulation.
Book Synopsis A Short Introduction to Quantum Information and Quantum Computation by : Michel Le Bellac
Download or read book A Short Introduction to Quantum Information and Quantum Computation written by Michel Le Bellac and published by Cambridge University Press. This book was released on 2006-06-15 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum information and computation is a rapidly expanding and cross-disciplinary subject. This book, first published in 2006, gives a self-contained introduction to the field for physicists, mathematicians and computer scientists who want to know more about this exciting subject. After a step-by-step introduction to the quantum bit (qubit) and its main properties, the author presents the necessary background in quantum mechanics. The core of the subject, quantum computation, is illustrated by a detailed treatment of three quantum algorithms: Deutsch, Grover and Shor. The final chapters are devoted to the physical implementation of quantum computers, including the most recent aspects, such as superconducting qubits and quantum dots, and to a short account of quantum information. Written at a level suitable for undergraduates in physical sciences, no previous knowledge of quantum mechanics is assumed, and only elementary notions of physics are required. The book includes many short exercises, with solutions available to instructors through [email protected].
Book Synopsis Green Networking by : Francine Krief
Download or read book Green Networking written by Francine Krief and published by John Wiley & Sons. This book was released on 2012-12-13 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on green networking, which is an important topic for the scientific community composed of engineers, academics, researchers and industrialists working in the networking field. Reducing the environmental impact of the communications infrastructure has become essential with the ever increasing cost of energy and the need for reducing global CO2 emissions to protect our environment. Recent advances and future directions in green networking are presented in this book, including energy efficient networks (wired networks, wireless networks, mobile networks), adaptive networks (cognitive radio networks, green autonomic networking), green terminals, and industrial research into green networking (smart city, etc.).
Book Synopsis Foundations of Signal Processing by : Martin Vetterli
Download or read book Foundations of Signal Processing written by Martin Vetterli and published by Cambridge University Press. This book was released on 2014-09-04 with total page 745 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive and engaging textbook introduces the basic principles and techniques of signal processing, from the fundamental ideas of signals and systems theory to real-world applications. Students are introduced to the powerful foundations of modern signal processing, including the basic geometry of Hilbert space, the mathematics of Fourier transforms, and essentials of sampling, interpolation, approximation and compression The authors discuss real-world issues and hurdles to using these tools, and ways of adapting them to overcome problems of finiteness and localization, the limitations of uncertainty, and computational costs. It includes over 160 homework problems and over 220 worked examples, specifically designed to test and expand students' understanding of the fundamentals of signal processing, and is accompanied by extensive online materials designed to aid learning, including Mathematica® resources and interactive demonstrations.
Book Synopsis Engineering Acoustics by : Michael Möser
Download or read book Engineering Acoustics written by Michael Möser and published by Springer Science & Business Media. This book was released on 2009-09-01 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Suitable for both individual and group learning, Engineering Acoustics focuses on basic concepts and methods to make our environments quieter, both in buildings and in the open air. The author’s tutorial style derives from the conviction that understanding is enhanced when the necessity behind the particular teaching approach is made clear. He also combines mathematical derivations and formulas with extensive explanations and examples to deepen comprehension. Fundamental chapters on the physics and perception of sound precede those on noise reduction (elastic isolation) methods. The last chapter deals with microphones and loudspeakers. Moeser includes major discoveries by Lothar Cremer, including the optimum impedance for mufflers and the coincidence effect behind structural acoustic transmission. The appendix gives a short introduction on the use of complex amplitudes in acoustics.
