1、 IEC/TR 62572-2Edition 1.0 2008-09TECHNICAL REPORT Fibre optic active components and devices Reliability standards Part 2:Laser module degradation IEC/TR 62572-2:2008(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION I
2、S COPYRIGHT PROTECTED Copyright 2008 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
3、 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 O
4、ffice 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 IE
5、C 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 sear
6、ch by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month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 r
7、eleased.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
8、 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
9、 TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC/TR 62572-2Edition 1.0 2008-09TECHNICAL REPORT Fibre optic active components and devices Reliability standards Part 2:Laser module degradation INTERNATIONAL ELECTROTECHNICAL COMMISSION UICS 33
10、.180;31.260 PRICE CODEISBN 2-8318-9993-1 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TR 62572-2 IEC:2008(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Norma
11、tive references.7 3 Terms and definitions.7 4 Laser diode and laser module failure mechanisms.8 4.1 General.8 4.2 Description of the main failure mechanisms which affect laser diodes and laser modules.9 4.2.1 Laser diodes.9 4.2.2 Monitor photodiode.13 4.2.3 TEC and thermistor.13 4.2.4 Packaging and
12、optical fibre.14 5 Guidance on testing.14 5.1 Service life tests General.14 5.2 Scale of testing.15 5.3 Screening of components(including burn-in).15 5.3.1 Laser diodes.15 5.3.2 Monitor photodiode.16 5.3.3 Other components of the laser module.16 6 Guidance on the use of failure criteria during testi
13、ng.16 7 Guidance on reliability predictions.19 7.1 Lifetime predictions.19 7.2 Failure rate prediction.21 Figure 1 An example of cross-section for laser module.9 Figure 2 Cross-section through a typical heterostructure laser (bonded section side up).10 Figure 3 Schematic diagram of DSD and DLDs view
14、ed from the direction perpendicular to the(001)substrate.11 Figure 4 Non-linearities in laser-current characteristics.18 Figure 5 “Bathtub”failure rate curve.22 Figure 6 Example of cumulative failure plot showing log-normal distribution of laser failure rate.The sample number tested is 33.23 Figure
15、7 Calculate failure rates as a function of service term for components having a log-normal lifetime distribution with a median life of 106 h and dispersion in the range 0,5 to 2,0.23 Table 1 Example of laser diode screening and burn-in conditions.15 Table 2 Example of monitor photodiode screening co
16、nditions.16 Table 3 Example of life test failure criteria.17 Table 4 Example of additional failure criteria for laser module service life tests.19 Table 5 Example of failure criteria for laser modules after temperature cycling testing and high-temperature storage testing.19 Table 6 Recommended values of activation energy for lifetime predictions(when an experimentally determined value is not available,i.e.default values).21 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCA
