1、 IEC 61291-5-2 Edition 2.0 2017-01 INTERNATIONAL STANDARD Optical amplifiers Part 5-2: Qualification specifications Reliability qualification for optical fibre amplifiers IEC 61291-5-2:2017-01(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, Switzerland All rights reserved. Un
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10、re.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. IEC 61291-5-2 Edition 2.0 2017-01 INTERNATIONAL STANDARD Optical amplifiers Part 5-2: Qualification specifications Reliability qualification for o
11、ptical fibre amplifiers INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.180.30 ISBN 978-2-8322-3855-4 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC 61291-5-2:2017 IEC 2017 CONTENTS FO
12、REWORD . 3 1 Scope 5 2 Normative references 5 3 Terms, definitions and abbreviated terms 6 3.1 Terms and definitions 6 3.2 Abbreviated terms . 6 4 Reliability requirements . 7 4.1 Tests 7 General . 7 4.1.1Reliability qualification of components . 7 4.1.2Reliability qualification of the OFA assembly
13、process 8 4.1.3Reliability qualification of the OFA device or sub-system . 8 4.1.4Structural similarity 10 4.1.5 Annex A (normative) Procedures for reliability testing of OFA components 11 A.1 General . 11 A.2 Tests required for passive optical components 11 A.3 Tests required for the doped fibre .
14、11 Annex B (informative) Reliability calculations . 12 B.1 Reliability calculation 12 B.2 Guidance on failure rate calculations 13 Bibliography 14 Table 1 Minimum test list for passive optical components, pump laser modules, monitor diode modules and optical connectors 7 Table 2 Minimum test list fo
15、r doped fibre 8 Table 3 Tests required for splices 8 Table 4 Minimum list for tests required on OFA devices and sub-systems 9 Table A.1 Tests required for the doped fibre 11 Table B.1 Failure rate of components . 13 IEC 61291-5-2:2017 IEC 2017 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL AM
16、PLIFIERS Part 5-2: Qualification specifications Reliability qualification for optical fibre amplifiers FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The ob
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26、 is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard I
27、EC 61291-5-2 has been prepared by subcommittee 86C: Fibre optic systems and active devices, of IEC technical committee 86: Fibre optics. This second edition cancels and replaces the first edition published in 2002. It constitutes a technical revision. This edition includes the following significant
28、technical changes with respect to the previous edition: a) removal of the contents on the relating quality management system from scope, terms and definitions, and the reliability requirements; b) moving fit-rate calculation to Annex B (informative); c) change of requirements for shock test; d) amen
29、dment of abbreviations related to changes a) and b). 4 IEC 61291-5-2:2017 IEC 2017 The text of this International Standard is based on the following documents: CDV Report on voting 86C/1376/CDV 86C/1426/RVC Full information on the voting for the approval of this International Standard can be found i
30、n the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 61291 series, published under the general title Optical amplifiers, can be found on the IEC website. The committee has decided that th
31、e contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual versio
32、n of this publication may be issued at a later date. IEC 61291-5-2:2017 IEC 2017 5 OPTICAL AMPLIFIERS Part 5-2: Qualification specifications Reliability qualification for optical fibre amplifiers 1 Scope This part of IEC 61291 applies to optical amplifiers (OAs) and optically amplified, elementary s
33、ub-systems for terrestrial applications, using active fibres (optical fibre amplifiers (OFAs) containing rare-earth dopants, which are commercially available. The black box approach is used in this document. The black box approach is adopted in order to give product specifications which are independ
34、ent of OA implementation details. For reliability qualification purposes, some information about the internal components is needed; these internal parts are themselves treated as black boxes. This document gives requirements for the evaluation of OA reliability by combining the reliability of such i
35、nternal black boxes. The object of this document is to specify the minimum list of reliability qualification tests, requirements on failure criteria during testing and on reliability predictions, and give the relevant normative references to establish a standard method for the assessment of the reli
36、ability of OFA devices and sub-systems in order to minimize risks and to promote product development and reliability qualification. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. Fo
37、r dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-731, International Electrotechnical Vocabulary Chapter 731: Optical fibre communication IEC 60068-2-2:2007, Environmental testing Pa
38、rt 2-2: Tests Test B: Dry heat IEC 60068-2-14, Environmental testing Part 2-14: Tests Test N: Change of temperature IEC 60068-2-21, Environmental testing Part 2-21: Tests Test U: Robustness of terminations and integral mounting devices IEC 60068-2-27, Environmental testing Part 2-27: Tests Test Ea a
39、nd guidance: Shock IEC 60068-2-31, Tests Test Ec: Rough handling shocks, primarily for equipment-type specimens IEC 60068-2-78, Environmental testing Part 2-78: Tests Test Cab: Damp heat, steady state IEC 61291-1, Optical fibre amplifiers Part 1: Generic specification 6 IEC 61291-5-2:2017 IEC 2017 I
40、EC 61300-2-4, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-4: Tests Fibre/cable retention IEC 62005-9-1, Fibre optic interconnecting devices and passive components Reliability Part 9-1: Qualification of passive optical components IEC 62005-9
41、-2, Reliability of fibre optic interconnecting devices and passive optical components Part 9-2: Reliability qualification for single fibre optic connector sets Single mode TIA 455-11, FOTP-11 Vibration Test Procedure for Fiber Optic Components and Cables 3 Terms, definitions and abbreviated terms 3.
42、1 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61291-1, IEC 60050-731 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia
43、.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 3.1.1 failure non-compliance to product specification or change in parameters as agreed by the customer and supplier 3.1.2 OFA manufacturer OFAM manufacturer who provides optical fibre amplifier (OFA) devices or subsystems meetin
44、g the requirements of the applicable product specification (PS) Note 1 to entry PS includes the reliability requirement. 3.2 Abbreviated terms EDFF erbium doped fluoride fibre EDSFA erbium doped silica fibre amplifier EDTF erbium doped tellurite fibre FIT failure in time FFS for further study OA opt
45、ical amplifier OFA optical fibre amplifier OFAM optical amplifier manufacturer OFAM optical fibre amplifier manufacturer PDFF praseodymium doped fluoride fibre PS product specification RH relative humidity DFF thulium doped fluoride fibre UCL upper confidence level IEC 61291-5-2:2017 IEC 2017 7 4 Re
46、liability requirements 4.1 Tests General 4.1.1 An optical fibre amplifier (OFA) device or sub-system is an assembly of various parts and components of different nature. A main point in the reliability testing of the OFA device or sub- system is to ensure the reliability of each part and basic manufa
47、cturing process used and to provide a route that may result in an understanding of design margins. For the purpose of this document, each internal part shall be seen as a black box. This document is based on the assumption that the reliability of an optical amplifier (OA) can be evaluated with suffi
48、cient confidence from the failure in time (FIT) rates of its internal black boxes when the assembly process of the constituents has been qualified. The procedures to qualify the assembly process are described in 4.1.3. The reliability assurance is confirmed by the test procedure described in 4.1.4 c
49、arried out on the OFA device or sub-system as a whole. The basic parts usually constituting an OFA are listed below: passive optical components; opto-electronic components; doped fibres or doped fibre modules; optical connectors; electronics; others (to be specified); mechanical packaging. The OFA manufacturer (OFAM) should declare the number and type of the internal black boxes constituting the OFA and give the failure rates (in FIT) fo
