Download or read book Applications des modes fuites dans les guides d ondes optiques written by Jean-Luc Archambault and published by . This book was released on 1991 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 36 (thesis year 1991) a total of 11,024 thesis titles from 23 Canadian and 161 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 36 reports theses submitted in 1991, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Download or read book CARACTERISATIONS OPTIQUES DE GUIDES D ONDES PLANAIRES PHOTOREFRACTIFS APPLICATION AUX DISPOSITIFS INTEGRES DE TRAITEMENT OPTIQUE DE L INFORMATION written by ALEXANDRE.. DAZZI and published by . This book was released on 1998 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES BESOINS DE L'OPTIQUE INTEGREE POUSSENT A TRANSFERER LES FONCTIONS (AMPLIFICATION D'ONDES, DOUBLAGE DE FREQUENCE, ETC) REALISEES DANS LES MATERIAUX VOLUMIQUES AUX GUIDES D'ONDES. DANS CE TRAVAIL, NOUS MODELISONS LA PROPAGATION DE LA LUMIERE DANS DES GUIDES A BARRIERE D'INDICE EN TENANT COMPTE DE L'ANISOTROPIE DU MILIEU. CES MODELES NOUS PERMETTENT D'ADAPTER LES PARAMETRES OPTOGEOMETRIQUES DES GUIDES AFIN D'OBTENIR DES MODES SANS FUITE ET DE MINIMISER LE COUPLAGE ENTRE LES MODES TE ET TM. LES ETUDES DE SPECTROSCOPIE LIGNES NOIRES ET LIGNES BLANCHES AINSI QUE L'ETUDE DU CONFINEMENT DES MODES (OU FUITES D'ENERGIE) DE PLUSIEURS ECHANTILLONS DE LINBO#3 ET BATIO#3 IMPLANTES H#+ ET HE#+, NOUS CONDUISENT A SELECTIONNER DEUX GUIDES PERMETTANT LA PROPAGATION D'ONDES TE DANS TOUTES LES DIRECTIONS DU GUIDE PLANAIRE. LES RESULTATS DU MELANGE D'ONDES DANS LE GUIDE DE LINBO#3 IMPLANTE HE#+, MONTRENT QUE L'AMPLIFICATION D'ONDES EST REGIE PAR DEUX PHENOMENES DIFFERENTS : L'EFFET PHOTOVOLTAIQUE ET L'EFFET DIFFUSIF. LES PROPRIETES PHOTOREFRACTIVES DU GUIDE SONT TRES DIFFERENTES DE CELLES DES CRISTAUX VOLUMIQUES DANS LA MESURE OU LES PHENOMENES PHOTOVOLTAIQUES NE SONT PAS DOMINANTS. LES RESULTATS DU MELANGE D'ONDES LE GUIDE DE BATIO#3 IMPLANTE HE#+ INDIQUENT QUE L'AMPLIFICATION EST ASSEZ IMPORTANTE (GAIN DE 80 CM##1) ET QUE L'EFFICACITE D'ATTENUATION DE L'ONDE POMPE (90%) PERMET D'ENVISAGER LA REALISATION DE FILTRE DE NOUVEAUTE DANS LE GUIDE. LES PHENOMENES PHOTOREFRACTIFS DANS LE GUIDE SONT TRES DIFFERENTS DE CEUX DU CRISTAL : TEMPS DE REPONSE 1000 FOIS PLUS COURT, SENS DU TRANSFERT D'ENERGIE INVERSE, PHOTOCONDUCTIVITE PLUS IMPORTANTE.
Download or read book COUPLAGE DES MODES DANS LES GUIDES D ONDES OPTIQUES MULTIMODES ET APPLICATIONS written by MICHAEL.. ECKERLE and published by . This book was released on 1994 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES PROPRIETES DE COUPLAGE DE MODES DANS LES GUIDES ONDES OPTIQUE MULTIMODE CYLINDRIQUE A SAUT D'INDICE (GOM) COMME DES FIBRES OPTIQUES SE PRESENTENT ICI SOUS FORME DE MATRICES DE TRANSFERT. ON PROPOSE UN MODELE POUR CES MATRICES DE TRANSFERT DE PUISSANCES ET D'INTENSITES ET DES CRITERES DE MESURES DEDUITS CONDUISENT A UN ANALYSEUR DE COUPLAGE DE MODES OPERATIONNELS. LES RESULTATS EXPERIMENTAUX AINSI OBTENUS PROUVENT LA VALIDITE DU MODELE. DES PREMIERES ANALYSES DES GOM MICRO-COURBEES MENENT A DES RESULTATS SENSATIONNELS. LA GRANDE RESOLUTION DES MATRICES DE TRANSFERT DONNE UNE IMPRESSION RAPIDE ET DETAILLEE DES PROPRIETES DE COUPLAGES DE MODE. IL EST POSSIBLE DE MESURER DES MATRICES DE TRANSFERT DES GOM DANS TOUTES SORTES DE CONFIGURATIONS, PAR EXEMPLE DES FIBRES MICRO-COURBEES, BOBINEES, TORDUES, TORSADEES OU SOUS FORME DE CONNECTEURS ET DE COUPLEURS. POUR CONCLURE, L'ANALYSEUR DE COUPLAGES DE MODES S'AVERE UN OUTIL IDEAL POUR LE DEVELOPPEMENT, LA CONCEPTION DE CAPTEUR A FIBRES OPTIQUES ET POUR LA VERIFICATION DES THEORIES SUR LES COUPLAGES DES MODES DANS LES GOM
Download or read book ETUDE NUMERIQUE ET EXPERIMENTALE DES GUIDES D ONDES OPTIQUES SEGMENTES written by PIERRE.. ASCHIERI and published by . This book was released on 1999 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES GUIDES D'ONDES OPTIQUES SEGMENTES OFFRENT DES PROPRIETES OPTIQUES INTERESSANTES POUR DIFFERENTS DOMAINES DE L'OPTIQUE INTEGREE. ILS SONT UTILISES EN OPTIQUE NON-LINEAIRE OU ILS PERMETTENT DE REALISER LA CONDITION DE QUASI-ACCORD DE PHASE, LE PROCESSUS DE FABRICATION DES GUIDES REALISANT CONJOINTEMENT LE GUIDAGE ET L'INVERSION PERIODIQUE DES DOMAINES FERROELECTRIQUES. CE TYPE DE GUIDE PRESENTE AUSSI UN INTERET EN OPTIQUE LINEAIRE OU IL PROPOSE ALORS UNE SOLUTION ALTERNATIVE SIMPLE A UN PROBLEME TECHNOLOGIQUE COMPLEXE QUI EST DE REALISER DES GUIDES DONT L'INDICE OPTIQUE VARIE LONGITUDINALEMENT. CECI PERMET DE CHANGER LE CONFINEMENT DES MODES QUI SE PROPAGENT DANS LE GUIDE ET DE CHANGER AINSI LA TAILLE DES MODES EN AGISSANT COMME DE VERITABLES ENTONNOIRS A LUMIERE. CEPENDANT LES GUIDES SEGMENTES COMPORTENT DES PERTES INTRINSEQUES QUI DEPENDENT FORTEMENT DE LA TOPOLOGIE DU GUIDE. LA MODELISATION DE LA PROPAGATION DE LA LUMIERE DANS CE TYPE DE STRUCTURE ET L'EXPLICATION DE L'APPARITION DES PERTES PERMET DE DEFINIR DES CONFIGURATIONS OPTIMALES POUR LE GUIDAGE DE LA LUMIERE. AINSI, LES PERTES DE PROPAGATION PEUVENT ETRE TRES FAIBLES, INFERIEURES A 0.1 DB/CM, POUR UN GUIDE PERIODIQUEMENT SEGMENTE ET LA TRANSFORMATION DE LA TAILLE DES MODES AU COURS DE LA PROPAGATION PEUT SE FAIRE DE FACON QUASIMENT ADIABATIQUE SI LA GEOMETRIE DES GUIDES EST JUDICIEUSEMENT CHOISIE. CETTE PROPRIETE EST UTILISEE POUR OPTIMISER LES PERFORMANCES DE DISPOSITIFS UTILISANT DES GUIDES SEGMENTES POUR REALISER DE LA MODULATION ELECTROPTIQUE OU DU FILTRAGE DE MODE. LE FAIT QUE LES PERTES DE PROPAGATION PUISSENT ETRE MODULEES PAR LES CONDITIONS DE GUIDAGE MONTRE UNE APPLICATION POTENTIELLE POUR LA LIMITATION OPTIQUE.
Download or read book Compl tudes des modes T E et T M pour un guide d ondes optiques planaire written by Institut national de recherche en informatique et en automatique (France). and published by . This book was released on 1985 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elaboration de guides optiques mesure des pertes et du couplage entre modes de propagation written by Young-Hee Won and published by . This book was released on 1980 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: ECHANGE IONIQUE DANS LES VERRES POUR LA FABRICATION DE GUIDES D'ONDES A PROFIL D'INDICE. METHODE A 3 PRISMES PERMETTANT DE MESURER FACILEMENT DE FAIBLES PERTES DANS UN GUIDE. ETUDE EXPERIMENTALE SUR LE COUPLAGE ENTRE DES MODES DANS UN GUIDE PLANAIRE
Download or read book Compl tude des modes T E et T M pour un guide d ondes optiques planaire written by J. C. Guillot and published by . This book was released on 1985 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electric and Magnetic Fields written by R. Belmans and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the edited versions of the papers presented at the Second International Workshop on Electric and Magnetic Fields held at the Katholieke Universiteit van Leuven (Belgium) in May 1994. This Workshop deals with numerical solutions of electromagnetic problems in real life applications. The topics include coupled problems (thermal, mechanical, electric circuits), CAD & CAM applications, 3D eddy current and high frequency problems, optimisation and application oriented numerical problems. This workshop was organised jointly by the AIM (Association of Engineers graduated from de Montefiore Electrical Institute) together with the Departments of Electrical Engineering of the Katholieke Universiteit van Leuven (Prof. R. Belmans), the University of Gent (Prof. J. Melkebbek) and the University of Liege (Prof. W. Legros). These laboratories are working together in the framework of the Pole d'Attraction Interuniversitaire - Inter-University Attractie-Pole 51 - on electromagnetic systems led by the University of Liege and the research work they perform covers most of the topics of the Workshop. One of the principal aims of this Workshop was to provide a bridge between the electromagnetic device designers, mainly industrialists, and the electromagnetic field computation developers. Therefore, this book contains a continuous spectrum of papers from application of electromagnetic models in industrial design to presentation of new theoretical developments.
Download or read book Annales des t l communications written by and published by . This book was released on 2007 with total page 1472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Spectroscopy 1 written by Wolfgang Demtröder and published by Springer. This book was released on 2014-05-07 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keeping abreast of the latest techniques and applications, this new edition of the standard reference and graduate text on laser spectroscopy has been completely revised and expanded. While the general concept is unchanged, the new edition features a broad array of new material, e.g., ultrafast lasers (atto- and femtosecond lasers) and parametric oscillators, coherent matter waves, Doppler-free Fourier spectroscopy with optical frequency combs, interference spectroscopy, quantum optics, the interferometric detection of gravitational waves and still more applications in chemical analysis, medical diagnostics, and engineering.
Download or read book Analusis written by and published by . This book was released on 1993 with total page 1098 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adhesion Between Polymers and Concrete Adh sion Entre Polym res Et B ton written by H. R. Sasse and published by Springer. This book was released on 1986 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preface Adhesion is a phenomenon architects and civil engineers are not very familiar with. In other disciplines knowledge about surface properties and the background of bonding energies is also far from satisfactory; nevertheless there are many important· applications in concrete engineering, where adhesion is necessary for success and durability. These include: - coating and painting - repair of concrete surfaces - bonding of fresh to old concrete - crack injection - glueing of precast elements - glueing of steel to concrete, etc. In 1981 RILEM established the technical committee 52-RAC 'Resin Adherence to Concrete'. The main aims of the committee's work were - to collect research results and practical experiences - to initiate and coordinate research programs - to develop, on a scientific base, test methods for field and for laboratory purposes. One of the results of the committee's work is a state-of-the-art report, which will be presented orally as a General Report at the International Symposium ISAP '86, and will be printed either in the RILEM journal Materials and Structures or separately. Several test recommendations have been elaborated and will be prepared as drafts for the participants ofISAP '86. These are: - direct tensile test - pull-off test - direct shear test - slant shear test - four-point bending test - dynamic loading test - thermal compatibility test (two versions) - injectibility test.
Download or read book Philosophy manual a South South perspective written by Chanthalangsy, Phinith and published by UNESCO Publishing. This book was released on 2014-12-31 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
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:
Download or read book Your Mindful Compass written by Andrea Maloney Schara and published by . This book was released on 2013-12-01 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Your Mindful Compass" takes us behind the emotional curtain to see the mechanisms regulating individuals in social systems. There is great comfort and wisdom in knowing we can increase our awareness to manage the swift and ancient mechanisms of social control. We can gain greater flexibility by seeing how social controls work in systems from ants to humans. To be less controlled by others, we learn how emotional systems influence our relationship-oriented brain. People want to know what goes on in families that give rise to amazing leaders and/or terrorists. For the first time in history we can understand the systems in which we live. The social sciences have been accumulating knowledge since the early fifties as to how we are regulated by others. S. Milgram, S. Ashe, P. Zimbardo and J. Calhoun, detail the vulnerability to being duped and deceived and the difficulty of cooperating when values differ. Murray Bowen, M.D., the first researcher to observe several live-in families, for up to three years, at the National Institute of Mental Health. Describing how family members overly influence one another and distribute stress unevenly, Bowen described both how symptoms and family leaders emerge in highly stressed families. Our brain is not organized to automatically perceive that each family has an emotional system, fine-tuned by evolution and "valuing" its survival as a whole, as much as the survival of any individual. It is easier to see this emotional system function in ants or mice but not in humans. The emotional system is organized to snooker us humans: encouraging us to take sides, run away from others, to pressure others, to get sick, to blame others, and to have great difficulty in seeing our part in problems. It is hard to see that we become anxious, stressed out and even that we are difficult to deal with. But "thinking systems" can open the doors of perception, allowing us to experience the world in a different way. This book offers both coaching ideas and stories from leaders as to strategies to break out from social control by de-triangling, using paradoxes, reversals and other types of interruptions of highly linked emotional processes. Time is needed to think clearly about the automatic nature of the two against one triangle. Time and experience is required as we learn strategies to put two people together and get self outside the control of the system. In addition, it takes time to clarify and define one's principles, to know what "I" will or will not do and to be able to take a stand with others with whom we are very involved. The good news is that systems' thinking is possible for anyone. It is always possible for an individual to understand feelings and to integrate them with their more rational brains. In so doing, an individual increases his or her ability to communicate despite misunderstandings or even rejection from important others. The effort involved in creating your Mindful Compass enables us to perceive the relationship system without experiencing it's threats. The four points on the Mindful Compass are: 1) Action for Self, 2) Resistance to Forward Progress, 3) Knowledge of Social Systems and the 4) The Ability to Stand Alone. Each gives us a view of the process one enters when making an effort to define a self and build an emotional backbone. It is not easy to find our way through the social jungle. The ability to know emotional systems well enough to take a position for self and to become more differentiated is part of the natural way humans cope with pressure. Now people can use available knowledge to build an emotional backbone, by thoughtfully altering their part in the relationship system. No one knows how far one can go by making an effort to be more of a self-defined individual in relationships to others. Through increasing emotional maturity, we can find greater individual freedom at the same time that we increase our ability to cooperate and to be close to others.
