IEC_TR_62469-2007.pdf

IEC/TR 62469Edition 1.0 2007-08TECHNICAL REPORT Guidance for residual stress measurement of optical fibre IEC/TR 62469:2007(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 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 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web: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.?Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.?Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.?Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC/TR 62469Edition 1.0 2007-08TECHNICAL REPORT Guidance for residual stress measurement of optical fibre INTERNATIONAL ELECTROTECHNICAL COMMISSION PICS 33.180.10 PRICE CODEISBN 2-8318-9301-1LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TR 62469 IEC:2007(E)CONTENTS FOREWORD.3 1 Scope.5 2 Justification of measurement.5 3 Apparatus.6 3.1 General.6 3.2 Light source.6 3.3 Polarizer and analyzer.6 3.4 Sample fibre preparation.6 3.5 Variable phase compensator.6 3.6 Optical intensity detection.7 3.7 Data acquisition.7 4 Data analysis and formula.7 4.1 General.7 4.2 1-D stress profile for a fibre with a cylindrically symmetric structure.8 4.3 2-D stress profile for a fibre with a cylindrically non-symmetric structure.9 5 Measurement procedure.12 5.1 Alignment of polarizer and analyzer.12 5.2 Fibre mounting.12 5.3 Taking transmitted intensity data),(yI.12 5.4 Calculation of 1-D stress profile for a fibre with a cylindrically symmetric structure.12 5.5 Calculation of 2-D stress profile for a fibre with a cylindrically non-symmetric structure.12 6 Documentation.12 6.1 Information to be reported for each measurement.12 6.2 Information that should be available upon request.13 Bibliography.14 Figure 1 Polariscopic phase retardation measurement setup for an optical fibre.6 Figure 2 Measured transmission intensity as a function of fibre radius and external phase.7 Figure 3 Propagation of laser light across the fibre cross-section.8 Figure 4 Stress profile for a fibre with depressed inner cladding and jacketed tube.9 Figure 5 Examples of projected phase retardation measurement)(y for a PM fibre as a function of fibre radius y when the projected angle is 0,45,90,and 135.10 Figure 6 Measured projected phases),(y of a PM fibre for various projected angles as a function of fibre radius.11 Figure 7 Calculated 2-D stress profile of a PM fibre.11 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TR 62469 IEC:2007(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ GUIDANCE FOR RESIDUAL STRESS MEASUREMENT OF OPTICAL FIBRE FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National Committees).The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other activities