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Book Description
SIMULATION DES PHENOMENES DE TRANSPORT. REALISATION DE TRANSISTORS BIPOLAIRES A HETEROJONCTION INGAALAS-INGAAS-INGAALAS EN TECHNOLOGIE DOUBLE MESA ET TECHNOLOGIE DIFFUSEE A PARTIR DE COUCHES OBTENUES PAR EPITAXIE PAR JETS MOLECULAIRES
Book Description
SIMULATION DES PHENOMENES DE TRANSPORT. REALISATION DE TRANSISTORS BIPOLAIRES A HETEROJONCTION INGAALAS-INGAAS-INGAALAS EN TECHNOLOGIE DOUBLE MESA ET TECHNOLOGIE DIFFUSEE A PARTIR DE COUCHES OBTENUES PAR EPITAXIE PAR JETS MOLECULAIRES
Book Description
Cette thèse présente l'optimisation des performances du transistor bipolaire à double hétérojonction (TBDH) InP/InGaAs aux dimensions submicroniques. Tout d'abord nous présenterons le développement d'un modèle analytique tenant compte des spécificités du dessin et de la technologie de ce composant. Ce modèle, qui sera confronté aux résultats de mesures de paramètre S, servira à déterminer les dimensions optimales permettant d'atteindre des fréquences de coupure élevées et de mettre en évidence les principaux axes d'optimisation des performances. Puis nous étudierons plusieurs structures de couche pour la transition base collecteur visant à améliorer les propriétés de transport du TBH et repousser la densité de courant au seuil d'effet Kirk en vue d'augmenter les performances fréquentielles maximales du composant. Enfin, étant donné que les TBH fonctionnent à des densités de courant pouvant dépasser 800 kA/cm2, ceux-ci sont sujets à un auto-échauffement qui contribue à la dégradation de leurs performances fréquentielles et à un vieillissement prématuré. Nous nous intéresserons donc à l'influence de la température sur les performances et présenterons les solutions apportées pour réduire l'auto-échauffement et améliorer la fiabilité des TBH. Ce travail a permis de valider une filière de TBH possédant des fréquences de coupure fT et fmax comprises dans la gamme 250-300 GHz ainsi qu'une tension de claquage de l'ordre de 5 V. Ainsi, ces composants ont pu être utilisés pour la réalisation de circuits destinés aux transmissions à 100 Gbit/s.
Author: Pradeep Lall Publisher: CRC Press ISBN: 0429605595 Category : Technology & Engineering Languages : en Pages : 332
Book Description
This book raises the level of understanding of thermal design criteria. It provides the design team with sufficient knowledge to help them evaluate device architecture trade-offs and the effects of operating temperatures. The author provides readers a sound scientific basis for system operation at realistic steady state temperatures without reliability penalties. Higher temperature performance than is commonly recommended is shown to be cost effective in production for life cycle costs. The microelectronic package considered in the book is assumed to consist of a semiconductor device with first-level interconnects that may be wirebonds, flip-chip, or tape automated bonds; die attach; substrate; substrate attach; case; lid; lid seal; and lead seal. The temperature effects on electrical parameters of both bipolar and MOSFET devices are discussed, and models quantifying the temperature effects on package elements are identified. Temperature-related models have been used to derive derating criteria for determining the maximum and minimum allowable temperature stresses for a given microelectronic package architecture. The first chapter outlines problems with some of the current modeling strategies. The next two chapters present microelectronic device failure mechanisms in terms of their dependence on steady state temperature, temperature cycle, temperature gradient, and rate of change of temperature at the chip and package level. Physics-of-failure based models used to characterize these failure mechanisms are identified and the variabilities in temperature dependence of each of the failure mechanisms are characterized. Chapters 4 and 5 describe the effects of temperature on the performance characteristics of MOS and bipolar devices. Chapter 6 discusses using high-temperature stress screens, including burn-in, for high-reliability applications. The burn-in conditions used by some manufacturers are examined and a physics-of-failure approach is described. The
Author: Lorenzo Pavesi Publisher: Springer Science & Business Media ISBN: 9783540210221 Category : Science Languages : en Pages : 424
Book Description
This book gives a fascinating picture of the state-of-the-art in silicon photonics and a perspective on what can be expected in the near future. It is composed of a selected number of reviews authored by world leaders in the field and is written from both academic and industrial viewpoints. An in-depth discussion of the route towards fully integrated silicon photonics is presented. This book will be useful not only to physicists, chemists, materials scientists, and engineers but also to graduate students who are interested in the fields of microphotonics and optoelectronics.
Author: Robert G. Hunsperger Publisher: Springer ISBN: 3662135655 Category : Science Languages : en Pages : 337
Book Description
Our intent in producing this book was to provide a text that would be comprehensive enough for an introductory course in integrated optics, yet concise enough in its mathematical derivations to be easily readable by a practicing engineer who desires an overview of the field. The response to the first edition has indeed been gratifying; unusually strong demand has caused it to be sold out during the initial year of publication, thus providing us with an early opportunity to produce this updated and improved second edition. This development is fortunate, because integrated optics is a very rapidly progressing field, with significant new research being regularly reported. Hence, a new chapter (Chap. 17) has been added to review recent progress and to provide numerous additional references to the relevant technical literature. Also, thirty-five new problems for practice have been included to supplement those at the ends of chapters in the first edition. Chapters I through 16 are essentially unchanged, except for brief updating revisions and corrections of typographical errors. Because of the time limitations imposed by the need to provide an uninterrupted supply of this book to those using it as a course text, it has been possible to include new references and to briefly describe recent developments only in Chapter 17. However, we hope to provide details of this continuing progress in a future edition.
Author: Henri H. Arsenault Publisher: SPIE Press ISBN: 9780819408259 Category : Computers Languages : en Pages : 150
Book Description
This volume surveys the entire field of optical computing. The emphasis is on breadth of coverage. The book is descriptive, the authors minimize the use of mathematics, and it is therefore most suitable for those who require an overall view of what is going on in this field. A detailed comparison is given of the capabilities of electronics and optics, and the degree to which these capabilities have been achieved is indicated. Other areas of focus include optical computing architectures, components and technologies, optical interconnects, and optical neural nets. Approximately 300 references to key works in the field are included.
Author: Katsunari Okamoto Publisher: Elsevier ISBN: 0080455069 Category : Technology & Engineering Languages : en Pages : 578
Book Description
Fundamentals of Optical Waveguides is an essential resource for any researcher, professional or student involved in optics and communications engineering. Any reader interested in designing or actively working with optical devices must have a firm grasp of the principles of lightwave propagation. Katsunari Okamoto has presented this difficult technology clearly and concisely with several illustrations and equations. Optical theory encompassed in this reference includes coupled mode theory, nonlinear optical effects, finite element method, beam propagation method, staircase concatenation method, along with several central theorems and formulas. Since the publication of the well-received first edition of this book, planar lightwave circuits and photonic crystal fibers have fully matured. With this second edition the advances of these fibers along with other improvements on existing optical technologies are completely detailed. This comprehensive volume enables readers to fully analyze, design and simulate optical atmospheres. - Exceptional new chapter on Arrayed-Waveguide Grating (AWG) - In-depth discussion of Photonic Crystal Fibers (PCFs) - Thorough explanation of Multimode Interference Devices (MMI) - Full coverage of polarization Mode Dispersion (PMD)
Author: Jean-Luc Pelouard
Author: Jean-Luc Pelouard
Author: Virginie Nodjiadjim
Author: 
Author: Pradeep Lall
Author: Lorenzo Pavesi
Author: Robert G. Hunsperger
Author: Henri H. Arsenault
Author: Ginés Lifante
Author: Marvin L. Cohen
Author: Katsunari Okamoto