IEC_TR_60825-17-2015.pdf

IEC TR 60825-17 Edition 2.0 2015-10 TECHNICAL REPORT Safety of laser products Part 17:Safety aspects for use of passive optical components and optical cables in high power optical fibre communication systems IEC T R 60825-17:2015-10(en)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 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 more than 30 000 terms and definitions in English and Fr ench,w ith equiv alent terms in 15 additional languages.Also k now n as the Inter national Electrotechnical Vocabular y(IEV)online.IEC Glossary-std.iec.ch/glossary Mor e than 60 000 electrotechnical terminology entries in English and Fr ench extr acted fr om the Ter ms and Definitions clause of IEC publica tions issued since 2002.Some entries hav e been collected from earlier 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 60825-17 Edition 2.0 2015-10 TECHNICAL REPORT Safety of laser products Part 17:Safety aspects for use of passiv e optical components and optical cables in high power optical fibre communication systems INT ERNAT IONAL ELECT ROT ECHNICAL COMMISSION ICS 31.260;33.180.01 ISBN 978-2-8322-2959-0 Registered t rademark of the Internat ional Electrotechnica l Commission Warning!Mak e sure that you obtained this publication from an authorized distributor.2 IEC TR 60825-17:2015 IEC 2015 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Terms and definitions.6 4 Recommendations.8 4.1 General considerations the background to optical fibre damage at high powers.8 4.2 Fibre coating damage occurring when bending at high powers.8 4.3 Information on automatic power reduction(APR).9 4.4 Information for manufacturers,operating organizations and users.10 4.5 Fibre and connector damage induced by high optical powers.11 4.5.1 Fibre fuse and other effects.11 4.5.2 Contamination particles.12 4.6 Degradation or burn-through of dust cap and/or shutter.12 4.7 Potentially collimated beam profile resulting in an increased optical hazard.12 4.7.1 General.12 4.7.2 High power expanded beam connectors.13 4.8 Increases in the temperatures of attenuators,collimators,splitters and other passive components.13 4.9 Additional labelling.14 Bibliography.15 IEC TR 60825-17:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SAFETY OF LASER PRODUCTS Part 17:Safety aspects for use of passive optical components and optical cables in high power optical fibre communication systems 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,IEC publishes International Standards,Technical Specifications,Technical Reports,Publicly Available Specifications(PAS)and Gu