Download or read book Conception fabrication et caract risation d une diode laser largement accordable mettant 1 5 microm tre written by Christophe Ougier and published by . This book was released on 1996 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE TRAITE DE LA REALISATION DE DIODES LASER LARGEMENT ACCORDABLES EMETTANT A 1,5 MICROMETRE. DANS LES RESEAUX DE TELECOMMUNICATIONS LARGES BANDES, CE COMPOSANT EST DESTINE AU DEVELOPPEMENT DES OPERATIONS DE MULTIPLEXAGE EN LONGUEUR D'ONDE ET DE COMMUTATION OPTIQUE. NOUS AVONS UTILISE DES REFLECTEURS DISTRIBUES ET ECHANTILLONNES POUR ASSURER, DANS UNE CAVITE LASER DBR, LA REACTION OPTIQUE ET LA SELECTION DE LA LONGUEUR D'ONDE SUR UNE PLAGE SPECTRALE ETENDUE. L'ACCORDABILITE EST OBTENUE PAR L'INJECTION DE PORTEURS DANS LES GUIDES D'ONDE OU SONT GRAVES LES RESEAUX DE DIFFRACTION. LA VARIATION D'INDICE DU MATERIAU QUI EN RESULTE, DETERMINE LA POSITION SPECTRALE DES PICS DE REFLECTIVITE ET DONC LA LONGUEUR D'ONDE QUI OSCILLE. D'APRES LA THEORIE DES MODES COUPLES, NOUS ETABLISSONS LA REFLECTIVITE DU RESEAU ECHANTILLONNE ET NOUS ETUDIONS SES CARACTERISTIQUES EN FONCTION DES DIFFERENTS PARAMETRES OPTO-GEOMETRIQUES. UNE SIMULATION DE L'ACCORDABILITE DU COMPOSANT NOUS PERMET DE CHOISIR L'ENSEMBLE DES PARAMETRES DE CONCEPTION DU LASER. NOUS AVONS FABRIQUE DES DIODES LASER DANS LA FAMILLE DE MATERIAUX SEMI-CONDUCTEURS INGAASP EN SUIVANT UNE FILIERE BRS OU LES SECTIONS ACTIVES ET PASSIVES SONT COUPLEES DE FACON BOUT A BOUT. NOUS AVONS CARACTERISE LE FONCTIONNEMENT STATIQUE ET DYNAMIQUE DES COMPOSANTS. EN PARTICULIER, PAR LE CONTROLE DE DEUX COURANTS, NOUS AVONS MESURE UNE ACCORDABILITE DE 33NM. 80 CANAUX, ESPACES DE 0,4NM, ENVIRON, SONT ACCESSIBLES A L'INTERIEUR DE CETTE PLAGE AVEC UNE REJECTION DES MODES SECONDAIRES SUPERIEURE A 30DB. LA BANDE PASSANTE EN MODULATION AM EST SUPERIEURE A 3,3GHZ SUR L'ENSEMBLE DE CETTE PLAGE

Download or read book Laser Diode Microsystems written by Hans Zappe and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Diode Microsystems provides the reader with the basic knowledge and understanding required for using semiconductor laser diodes in optical microsystems and micro-optical electromechanic systems. This tutorial addresses the fundamentals of semiconductor laser operation and design, coupled with an overview of the types of laser diodes suitable for use in Microsystems, along with their distinguishing characteristics. Emphasis is placed on laser diode characterization and measurement as well as the assembly techniques and optical accessories required for incorporation of semiconductor lasers into complex microsystems. Equipped with typical results and calculation examples, this hand-on text helps readers to develop a feel for how to choose a laser diode, characterize it and incorporate it into a microsystem.

Download or read book Lettre d un m decin de Besan on un chirurgien de la campagne son ami written by and published by . This book was released on 1746 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brochure anonyme polémiquant contre un libelle du Dr Atthalin publié à Besançon en 1746.

Download or read book Critical Technologies Plan written by and published by . This book was released on 1989 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of Human Computer Interaction written by Andrew F. Monk and published by Academic Press. This book was released on 2014-06-28 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Human-Computer Interaction aims to sensitize the systems designer to the problems faced by the user of an interactive system. The book grew out of a course entitled ""The User Interface: Human Factors for Computer-based Systems"" which has been run annually at the University of York since 1981. This course has been attended primarily by systems managers from the computer industry. The book is organized into three parts. Part One focuses on the user as processor of information with studies on visual perception; extracting information from printed and electronically presented text; and human memory. Part Two on the use of behavioral data includes studies on how and when to collect behavioral data; and statistical evaluation of behavioral data. Part Three deals with user interfaces. The chapters in this section cover topics such as work station design, user interface design, and speech communication. It is hoped that this book will be read by systems engineers and managers concerned with the design of interactive systems as well as graduate and undergraduate computer science students. The book is also suitable as a tutorial text for certain courses for students of Psychology and Ergonomics.