Optical Switching in Next Generation Data Centers
This book introduces the reader to the optical switching technology for its application to data centers. In addition, it takes a picture of the status of the technology and system architecture evolution and of the research in the area of optical switching
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tical Switching in Next Generation Data Centers
Optical Switching in Next Generation Data Centers
Francesco Testa • Lorenzo Pavesi Editors
Optical Switching in Next Generation Data Centers
Editors Francesco Testa Ericsson Research Pisa, Italy
Lorenzo Pavesi Department of Physics, Nanoscience Lab University of Trento Povo, Trento, Italy
ISBN 978-3-319-61051-1 ISBN 978-3-319-61052-8 (eBook) DOI 10.1007/978-3-319-61052-8 Library of Congress Control Number: 2017949388 © Springer International Publishing AG 2018 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, 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. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Printed on acid-free paper This Springer imprint is published by Springer Nature The registered company is Springer International Publishing AG The registered company address is: Gewerbestrasse 11, 6330 Cham, Switzerland
Francesco Testa: To you, Cinzia Lorenzo Pavesi: To Sofia, an unexpected sunbeam and a dawn of hope
Preface
The ever-growing society of information has its backbone on a complex network of optical links among nodes where data are stored and processed. These nodes are mostly constituted by data centers. Here a large amount of traffic is handled which is unequally shared between the inter-data center traffic and out-of-the-data center traffic. This huge amount of data is exchanged by using optical communication technologies, thanks to their unique characteristics of high bandwidth, low power consumption, transparency to signal protocol, and enormous bit rate. Advanced optical network technologies are used in data transmission and are reaching the interior of the data centers to meet the increasing demands of capacity, flexibility, low latency, connectivity, and energy efficiency. In fact, optical point-to-point interconnects support intra-data center networking of compute nodes, electrical packet switching fabrics, and storage equipments. The evolution is toward the use of optical
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