1、BRITISH STANDARD BS EN 61291-5-2:2002 Optical amplifiers Part 5-2: Qualification specifications Reliability qualification for optical fibre amplifiers The European Standard EN 61291-5-2:2002 has the status of a British Standard ICS 33.180.30 BS EN 61291-5-2:2002 This British Standard was published u
2、nder the authority of the Standards Policy and Strategy Committee on 5 February 2003 BSI 5 February 2003 ISBN 0 580 41184 2 National foreword This British Standard is the official English language version of EN 61291-5-2:2002. It is identical with IEC 61291-5-2:2002. The UK participation in its prep
3、aration was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/3, Fibre optic systems and active devices, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Sta
4、ndards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. Th
5、is publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible int
6、ernational/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN
7、 title page, pages 2 to 26, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61291-5-2 NORME EUROPENNE EUROPISCHE NORM December 2002 CEN
8、ELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC - All rights of exploitation in any form and by any means reserved wor
9、ldwide for CENELEC members. Ref. No. EN 61291-5-2:2002 E ICS 33.180.30 English version Optical amplifiers Part 5-2: Qualification specifications - Reliability qualification for optical fibre amplifiers (IEC 61291-5-2:2002) Amplificateurs optiques Partie 5-2: Spcifications de qualification - Qualific
10、ation de fiabilit pour amplificateurs fibres optiques (CEI 61291-5-2:2002) Lichtwellenleiter-Verstrker Teil 5-2: Anerkennungsspezifikation - Zuverlssigkeitsanerkennung (IEC 61291-5-2:2002) This European Standard was approved by CENELEC on 2002-11-01. CENELEC members are bound to comply with the CEN/
11、CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to a
12、ny CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official ve
13、rsions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.Foreword Th
14、e text of document 86C/434/FDIS, future edition 1 of IEC 61291-5-2, prepared by SC 86C, Fibre optic systems and active devices, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61291-5-2 on 2002-11-01. The following dates were fixed: latest
15、 date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-08-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-11-01 Annexes designated “normative“ are part of the b
16、ody of the standard. Annexes designated “informative“ are given for information only. In this standard, annexes A, B and ZA are normative and annex C is informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61291-5-2:2002 was approved by CEN
17、ELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: ISO 9001 NOTE Harmonized as EN ISO 9001:2000 (not modified). ISO 9004 NOTE Harmonized as EN ISO 9004:2000 (not modified). _ Page2 EN61291
18、52:2002CONTENTS INTRODUCTION.4 1 Scope and object5 2 Normative references .5 3 Terms and definitions .7 4 Reliability requirements 8 4.1 Demonstration of product quality .8 4.2 Testing responsibilities8 4.2.1 General .8 4.2.2 Recommendation applicable to OFA customer (SS).8 4.2.3 Recommendation appl
19、icable to SO 9 4.3 Quality improvement programmes (QIPs) 9 4.4 Tests.9 4.4.1 General .9 4.4.2 Reliability qualification of components .10 4.4.3 Reliability qualification of the OFA assembly process 10 4.4.4 Reliability qualification of the OFA device or sub-system .11 4.4.5 Structural similarity13 4
20、.5 Procedures13 4.5.1 Analysis of reliability results 13 4.5.2 Reliability calculations .13 4.5.3 Audits/technical visits to OFA manufacturers (FFS) .14 4.5.4 Design/process changes14 4.5.5 Delivery (FFS) .15 4.5.6 Supplier documentation (FFS) .15 5 Guidance15 5.1 Guidance on failure rate calculatio
21、ns.15 5.2 OFA failure mechanisms .15 Annex A (normative) Procedures for reliability testing of OFA components 16 Annex B (normative) Reliability test methods .21 Annex C (informative) List of abbreviations23 Annex ZA (normative) Normative references to international publications with their correspon
22、ding European publications .24 Bibliography26 Page3 EN6129152:2002INTRODUCTION This International Standard is dedicated to the subject of reliability qualification of optical amplifiers. Since the technology is quite new and still evolving, amendments and new editions to this document can be expecte
23、d. Each abbreviation introduced in this International Standard is explained in the text, at least the first time it appears. However, for an easier understanding of the whole text, a list of all abbreviations used in this International Standard is given in annex C. Page4 EN6129152:2002OPTICAL AMPLIF
24、IERS Part 5-2: Qualification specifications Reliability qualification for optical fibre amplifiers 1 Scope and object This International Standard applies to optical amplifiers (OAs) and optically amplified, elementary sub-systems for terrestrial applications, using active fibres (optical fibre ampli
25、fiers, OFAs), containing rare-earth dopants, which are commercially available. The black box approach is used in this IEC standard. The black box approach is adopted in order to give product specifications which are independent of OA implementation details. For reliability qualification purposes, so
26、me information about the internal components is needed; these internal parts are themselves treated as black boxes. This standard gives requirements for the evaluation of OA reliability by combining the reliability of such internal black boxes. The objects of this International Standard are the foll
27、owing: to specify the requirements for the reliability assessment of OFAs; to provide assistance to the purchaser in the selection of consistently high quality OA products for his particular applications; to give the minimum list of reliability qualification tests, requirements on failure criteria d
28、uring testing and on reliability predictions, and give the relevant normative references. In particular, this International Standard is intended: to establish a standard method for the assessment of the reliability of OFA devices and sub-systems in order to minimize risks and to promote product deve
29、lopment and reliability qualification; to establish means to determine the distribution of failures in time in order to enable the determination of equipment failure rates for specified end-of-life criteria. In addition, guidance is given on: the controls a customer should make, prior to procurement
30、 of an OFA, on the test procedures an OFA manufacturer has in place in order to guarantee product reliability; the procedures to verify the reliability claims of an OFA manufacturer. 2 Normative references The following referenced documents are indispensable for the application of this document. For
31、 dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-2-1, Environmental testing Part 2: Tests. Tests A: Cold IEC 60068-2-2, Environmental testing Part 2: Tests. Tests B: Dry heat IEC 600
32、68-2-3, Environmental testing Part 2: Tests. Test Ca: Damp heat, steady state Page5 EN6129152:2002IEC 60068-2-6, Environmental testing Part 2: Tests Test Fc: Vibration (sinusoidal) IEC 60068-2-14, Environmental testing Part 2: Tests. Test N: Change of temperature IEC 60068-2-21, Environmental testin
33、g Part 2-21: Tests Test U: Robustness of terminations and integral mounting devices IEC 60068-2-27, Environmental testing. Part 2: Tests. Test Ea and guidance: Shock IEC 60068-2-32, Environmental testing. Part 2: Tests. Test Ed: Free fall (Procedure 1) IEC 60068-2-56, Environmental testing Part 2: T
34、ests. Test Cb: Damp heat, steady state, primarily for equipment IEC 61300-2-1, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-1: Tests Vibration (sinusoidal) IEC 61300-2-2, Fibre optic interconnecting devices and passive components Basic test
35、and measurement procedures Part 2-2: Tests Mating durability IEC 61300-2-4, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-4: Tests Fibre/cable retention IEC 61300-2-5, Fibre optic interconnecting devices and passive components Basic test and
36、measurement procedures Part 2-5: Tests Torsion/twist IEC 61300-2-9, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-9: Tests Shock IEC 61300-2-18, Fibre optic interconnecting devices and passive components Basic test and measurement procedures
37、Part 2-18: Tests Dry heat High temperature endurance IEC 61300-2-19, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-19: Tests Damp heat (steady state) IEC 61300-2-22, Fibre optic interconnecting devices and passive components Basic test and me
38、asurement procedures Part 2-22: Tests Change of temperature IEC 61300-2-42, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-42: Tests Static side load for connectors IEC 61291-1, Optical fibre amplifiers Part 1: Generic specification IEC 61751,
39、 Laser modules used for telecommunication Reliability assessment ISO 9000, Quality management systems Fundamentals and vocabulary Page6 EN6129152:20023 Terms and definitions For the purposes of this part of IEC 61291, the definitions given in IEC 61291-1 and the following apply. NOTE For ease of ref
40、erence the definition of OA reliability given in IEC 61291-1 is reported below (definition 3.7). 3.1 failure non-compliance to product specification or change in parameters as agreed by the customer and supplier 3.2 OFA manufacturer (OFAM) manufacturer who provides OFA devices or subsystems meeting
41、the requirements of the applicable detail specification (DS) 3.3 system supplier (SS) manufacturer of fibre-optic telecommunication equipment containing OFAs (that is, the OFA customer) 3.4 system operator (SO) telecommunication operator using fibre-optic systems with OFAs in the transmissions path
42、3.5 component supplier (CS) manufacturer providing the OFAM with components meeting the requirements of the applicable detail specification (DS) 3.6 capability qualifying component (CQC) components or sub-assemblies representing critical stages of the manufacturing process and limiting the character
43、istics of mechanical and electro-optic design NOTE Such components or sub-assemblies enable the determination of activation energies and help in the identification of final product failure mechanisms. 3.7 reliability a) minimum period of OA continuous operation without any faults at specified operat
44、ing and environmental conditions; b) probability of faults per year at specified operating and environmental conditions NOTE The reliability of an OA is expressed by either of the following two parameters: mean time before failure (MTBF) and failure in time (FIT): The MTBF is the mean period of OFA
45、continuous operation without any failure at specified operating and environmental conditions. The FIT is the number of failures expected in 10 9hours at specified operating and environmental conditions. Page7 EN6129152:20024 Reliability requirements 4.1 Demonstration of product quality This Internat
46、ional Standard (where required by the DS) gives the minimum mandatory requirements to assess reliability of an OFA device or subsystem and is intended to be part of a total OFA reliability qualification and quality assurance procedure adopted by: the OFAM. Moreover, it gives guidance on the quality
47、assurance procedures to be adopted by: the SS, the SO, and on the feedback of field performance to be provided (as indicated in the DS) by the SO to the OFAM and to the SS. The OFAM shall be able to demonstrate: a documented and audited manufacturing process, including the reliability qualification
48、of purchased components, in accordance with ISO 9000; a performance qualification programme, including, for example, accelerated life testing, burn-in and screening of components and OFA devices and subsystems; a reliability qualification maintenance programme to ensure continuity of reliability per
49、formance; a procedure to ensure an appropriate feedback to development and production on reliability issues. This can be achieved by means of reliability qualification approval of products, technology approval (TA) or capability approval (CA) of the manufacturing process. NOTE A comprehensive reliability assurance programme is usually more comp
