Infrared Holography for Optical Communications Techniques, Materials

The aim of this book is to exploit the advantages of holographic technology, namely the high storage capacity and fast access times, in order to implement optical devices for infrared fiber communication applications. The covered methods range from two-la

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D. Piccinin

M.C. Ubaldi (Eds.)

Infrared Holography for Optical Communications Techniques, Materials, and Devices With 90 Figures and lO Tables

Springer

Dr. P i e r p a o l o Boffi Dr. D a v i d e P i c c i n i n Dr. M a r i a C. U b a l d i Commutazione Ottica Milano (CoreCom) Consorzio Ricerche Elaborazione Via Ampere 30 20131 Milan Italy Emaih [email protected] [email protected] [email protected]

Library of Congress Cataloging-in-Publication Data. Infrared holography for optical communications: techniques, materials, and devices P. Boffi,D. Piccinin, M. C. Ubaldi (eds.) p.cm.- (Topicsin applied physics, ISSNo3o3-4216) Includes bibliographical references and index. ISBN354o433147 (alk. Paper) 1. Holography. 2. Infrared imaging. 3. Optical storage devices. I. Boffi,P. (Pierpaolo), 1966- II. Piccinin, D. (Davide), 1968- IIl. Ubaldi, M. C. (Maria C.), 1970- IV. Series. TA154o.1542002 621.36'75-dc21 2002022167 P h y s i c s a n d A s t r o n o m y C l a s s i f i c a t i o n S c h e m e (PACS): 42.4o.E, 42.7o.L, 42.79.S

ISSN p r i n t e d i t i o n : 0303-4216 ISSN e l e c t r o n i c e d i t i o n : 1437-o859 ISBN 3-540-43314-7 S p r i n g e r - V e r l a g B e r l i n H e i d e l b e r g N e w York This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, t965, in its current version, and permission for use must alwaysbe obtained from Springer-Verlag. Violations are liable for prosecution under the German Copyright Law. Springer-VerlagBerlin Heidelberg New York a member of BertelsmannSpringer Science+BusinessMedia GmbH ht tp://www.springer.de © Springer-VerlagBerlin Heidelberg 20o3 Printed in Germany The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Typesetting: DA-TEXGerd Blumenstein, Leipzig Cover design: design e~production GmbH, Heidelberg Printed on acid-free paper

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Preface

U m b r e l l a : . . . used as a protection against the sun in China, Egypt, and elsewhere in remote antiquity . . . . its usefulness was not rediscovered until the late 16th cent., when it was introduced as the parapluie (Fr.=against the rain). (The Columbia Encyclopedia, Sixth Edition. 2001). What's umbrella got to do with holography? It is just a question of evolution in use... Consider a fascinating and well-established technology as holography (our "umbrella") employed since many years in the conventional field of data storage (the use against the "sun"). Such as umbrella was successfully introduced as repair agains