IEC_TR_62343-6-4-2017.pdf

IEC TR 62343-6-4 Edition 1.0 2017-01 TECHNICAL REPORT Dynamic modules Part 6-4:Design guides Reconfigurable optical add/drop multiplexer IEC T R 62343-6-4:2017-01(en)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.IEC Catalogue-webstore.iec.ch/catalogue The stand-alone applica tion for consulting the entir e bibliogr aphical informa tion on IEC International Standar ds,Technical Specifica tions,Technical Reports and other documents.Av ailable for PC,Mac OS,Android Tablets and iPad.IEC publications search-www.iec.ch/searchpub The adv anced sear ch enables to find IEC publications by a var iety of cr iter ia(refer ence number,text,technica l committee,).It also gives infor ma tion on pr ojects,replaced and w ithdraw n publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to da te on all new IEC publications.Just Published details all new publica tions released.Av ailable online and also once a month by email.Electropedia-www.electropedia.org The w or lds leading online dictionary of electronic and electrical terms containing 20 000 terms and definitions in English and Fr ench,w ith equiv alent terms in 16 additional languages.Also know n as the Inter national Electr otechnical Vocabulary(IEV)online.IEC Glossary-std.iec.ch/glossary 65 000 electrotechnical terminology entries in English and Fr ench extracted fr om the Terms and Definitions clause of IEC publica tions issued since 2002.Some entr ies hav e been collected from ear lier publications of IEC TC 37,77,86 and CISPR.IEC Customer Serv ice Centre-webstore.iec.ch/csc If you w ish to giv e us your feedback on this publication or need fur ther assistance,plea se contact the Customer Ser v ice Centre:csciec.ch.IEC TR 62343-6-4 Edition 1.0 2017-01 TECHNICAL REPORT Dy namic modules Part 6-4:Design guides Reconfigurable optical add/drop multiplexer INT ERNAT IONAL ELECT ROT ECHNICAL COMMISSION ICS 33.180.01,33.180.99 ISBN 978-2-8322-3879-0 Registered t rademark of the Internat ional Electrotechnica l Commission Warning!Mak e sure that you obtained this publication from an authorized distributor.colourinside 2 IEC TR 62343-6-4:2017 IEC 2017 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms,definitions and abbreviated terms.6 3.1 Terms and definitions.6 3.2 Abbreviated terms.6 4 Reconfigurable optical add/drop multiplexer.7 4.1 Background.7 4.2 Optical network evolution.8 4.3 ROADM subsystem technologies evolution.11 4.3.1 General.11 4.3.2 Wavelength blocker based ROADMs.11 4.3.3 Integrated planar lightwave circuits(IPLC)based ROADMs.12 4.3.4 Wavelength selective switches.13 4.4 ROADM architecture.14 4.4.1 Broadcast and select architecture.14 4.4.2 Route and select architecture.16 4.4.3 Colourless,directionless and contentionless(CDC)functionality.17 5 WSS performance characteristics.22 Annex A(informative)ROADM(WSS)component technologies.23 A.1 General description.23 A.2 PLC technology.23 A.3 MEMS(micro-electromechanical system)technology.24 A.4 LCD(liquid crystal device)technology.25 A.5 LCOS(liquid crystal on silicon).25 A.6 DLP(digital light processor)mirror arrays.26 A.7 Feature comparison of each switching engine technology.26 Bibliography.28 Figure 1 Reconfigurable optical network.7 Figure 2 Evolution of optical networks from point-to-point to reconfigurable WDM.9 Figure 3 Schematic of a ROADM node showing functions of wavelength pass-through add or drop,channel power equalization,and optical channel monitoring(OCM).10 Figure 4 Evolution of ROADM technologies.11 Figure 5 Wavelength blocker based ROADM architecture.12 Figure 6 2-degree ROADM node architecture with wavelength blocker,dynamic OAs and shared OCMs.12 Figure 7 PLC based ROADM architecture.13 Figure 8 ROADM architecture incorporating a WSS.14 Figure 9 Broadcast and select architecture of ROADMs.15 Figure 10 ROADM architectures.16 Figure 11 ROADM route and select architectu