IEC_TR_62547-2013.pdf

IEC/TR 62547 Edition 2.0 2013-05 TECHNICAL REPORT Guidelines for the measurement of high-power damage sensitivity of single-mode fibre to bends Guidance for the interpretation of results IEC/TR 62547:2013(E)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013 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.Useful links:IEC publications search-www.iec.ch/searchpub The advanced search enables you to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available on-line and also once a month by email.Electropedia-www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary(IEV)on-line.Customer Service Centre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance,please contact the Customer Service Centre:csciec.ch.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC/TR 62547 Edition 2.0 2013-05 TECHNICAL REPORT Guidelines for the measurement of high-power damage sensitivity of single-mode fibre to bends Guidance for the interpretation of results INTERNATIONAL ELECTROTECHNICAL COMMISSION W ICS 33.180.10 PRICE CODE ISBN 978-2-83220-801-4 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 TR 62547 IEC:2013(E)CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Background.7 4 Test procedures.9 4.1 Safety.9 Safety issues.9 4.1.1 Eye safe working.9 4.1.2 Risk of fire/flame.9 4.1.3 Risk of atmospheric pollution from coating by-products.9 4.1.4 Risk of fibre fuse initiation.9 4.1.5 Risk of damage to downstream components.10 4.1.6 Risk avoidance.10 4.1.74.2 General.10 4.3 Apparatus.10 Light source.10 4.3.1 Isolator.10 4.3.2 Bend jig.11 4.3.3 Receiver.11 4.3.4 Attenuator.11 4.3.5 Computer.11 4.3.6 Camera.11 4.3.7 Thermal imaging camera.11 4.3.8 Oven.11 4.3.9 Sample.12 4.3.104.4 Test method 1 Failure time characterization as a function of the launch power and bend conditions(bend angle and diameter).12 Description and procedure.12 4.4.1 General comments and conclusions on test method 1.13 4.4.2 Reported items for test method 1.14 4.4.34.5 Test method 2 Equilibrium temperature measurement.14 General.14 4.5.1 Coating heating measurements and power lost at bend.16 4.5.2 Analysis test method 2:equilibrium temperature.17 4.5.3 Test conditions for test method 2.18 4.5.4 Conclusions on test method 2.19 4.5.5 Reported items for test method 2.19 4.5.65 Conclusions.20 Annex A(informative)Robustness of fibres against damage from exposure to high power at bends.21 Bibliography.39 Figure 1 Example of experimental layout.11 Figure 2 Damage results for fibre G.13 Figure 3 Example of time evolution of catastrophic high-power loss and related maximum temperature reached by the coating near to the top of the bent fibre(apex).15 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-27-2014