EN 61291-5-2:2002

SLOVENSKI SIST EN 61291-5-2:2004

STANDARD
september 2004
Optični ojačevalci – 5-2. del: Kvalifikacijske specifikacije; Kvalifikacije
zanesljivosti za ojačevalnike optičnih vlaken (IEC 61291-5-2:2002)*
Optical amplifiers - Part 5-2: Qualification specifications - Reliability qualification for
optical fibre amplifiers (IEC 61291-5-2:2002)
ICS 33.180.30 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 61291-5-2
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2002

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 Lichtwellenleiter-Verstärker
Partie 5-2: Spécifications de qualification - Teil 5-2: Anerkennungsspezifikation -
Qualification de fiabilité pour Zuverlässigkeitsanerkennung
amplificateurs à fibres optiques (IEC 61291-5-2:2002)
(CEI 61291-5-2:2002)
This European Standard was approved by CENELEC on 2002-11-01. CENELEC members are bound to
comply with the CEN/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 any 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 versions.

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.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für 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 worldwide for CENELEC members.

Ref. No. EN 61291-5-2:2002 E
Foreword
The 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 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 body 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 CENELEC 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).
__________
- 3 - EN 61291-5-2:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60068-2-1 - Environmental testing EN 60068-2-1 1993
Part 2: Tests - Tests A: Cold
1) 2)
IEC 60068-2-2 - Part 2: Tests - Test B: Dry heat EN 60068-2-2 1993

1) 2)
IEC 60068-2-3 - Part 2: Tests - Test Ca: Damp heat, HD 323.2.3 S2 1987
steady state
1) 2)
IEC 60068-2-6 - Part 2: Tests - Test Fc: Vibration EN 60068-2-6 1995
(sinusoidal)
1) 2)
IEC 60068-2-14 - Part 2: Tests - Test N: Change of EN 60068-2-14 1999
temperature
1) 2)
IEC 60068-2-21 - Part 2-21: Tests - Test U: Robustness of EN 60068-2-21 1999
terminations and integral mounting
devices
1) 2)
IEC 60068-2-27 - Part 2: Tests - Test Ea and guidance: EN 60068-2-27 1993
Shock
1) 2)
IEC 60068-2-32 - Part 2: Tests - Test Ed: Free fall EN 60068-2-32 1993

1) 2)
IEC 60068-2-56 - Part 2: Tests - Test Cb: Damp heat, HD 323.2.56 S1 1990
steady state, primarily for equipment

1) 2)
IEC 61300-2-1 - Fibre optic interconnecting devices and EN 61300-2-1 1997
passive components - Basic test and
measurement procedures
Part 2-1: Tests - Vibration (sinusoidal)

1) 2)
IEC 61300-2-2 - Part 2-2: Tests - Mating durability EN 61300-2-2 1997

1) 2)
IEC 61300-2-4 - Part 2-4: Tests - Fibre/cable retention EN 61300-2-4 1997

1)
Undated reference.
2)
Valid edition at date of issue.

Publication Year Title EN/HD Year
1) 2)
IEC 61300-2-5 - Part 2-5: Tests - Torsion/twist EN 61300-2-5 1997

1) 2)
IEC 61300-2-9 - Part 2-9: Tests - Shock EN 61300-2-9 1997

1) 2)
IEC 61300-2-18 - Part 2-18: Tests - Dry heat - High EN 61300-2-18 1997
temperature endurance
1) 2)
IEC 61300-2-19 - Part 2-19: Tests - Damp heat (steady EN 61300-2-19 1997
state)
1) 2)
IEC 61300-2-22 - Part 2-22: Tests - Change of EN 61300-2-22 1997
temperature
1) 2)
IEC 61300-2-42 - Part 2-42: Tests - Static side load for EN 61300-2-42 1998
connectors
1) 2)
IEC 61291-1 - Optical fibre amplifiers EN 61291-1 1998
Part 1: Generic specification
1) 2)
IEC 61751 - Laser modules used for EN 61751 1998
telecommunication - Reliability
assessment
1) 2)
ISO 9000 - Quality management systems EN ISO 9000 2000
Fundamentals and vocabulary
NORME CEI
INTERNATIONALE IEC
61291-5-2
INTERNATIONAL
Première édition
STANDARD
First edition
2002-08
Amplificateurs optiques –
Partie 5-2:
Spécifications de qualification –
Qualification de fiabilité pour amplificateurs
à fibres optiques
Optical amplifiers –
Part 5-2:
Qualification specifications –
Reliability qualification for optical
fibre amplifiers
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CODE PRIX
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Commission Electrotechnique Internationale PRICE CODE
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Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61291-5-2 © IEC:2002 – 3 –
CONTENTS
FOREWORD . 5
INTRODUCTION .7
1 Scope and object . 9
2 Normative references. 9
3 Terms and definitions .13
4 Reliability requirements .15
4.1 Demonstration of product quality .15
4.2 Testing responsibilities .15
4.2.1 General.15
4.2.2 Recommendation applicable to OFA customer (SS) .15
4.2.3 Recommendation applicable to SO .15
4.3 Quality improvement programmes (QIPs).17
4.4 Tests .17
4.4.1 General.17
4.4.2 Reliability qualification of components .19
4.4.3 Reliability qualification of the OFA assembly process.19
4.4.4 Reliability qualification of the OFA device or sub-system .21
4.4.5 Structural similarity .25
4.5 Procedures .25
4.5.1 Analysis of reliability results.25
4.5.2 Reliability calculations .25
4.5.3 Audits/technical visits to OFA manufacturers (FFS) .27
4.5.4 Design/process changes .27
4.5.5 Delivery (FFS) .29
4.5.6 Supplier documentation (FFS).29
5 Guidance .29
5.1 Guidance on failure rate calculations .29
5.2 OFA failure mechanisms.29
Annex A (normative) Procedures for reliability testing of OFA components.31
Annex B (normative) Reliability test methods .41
Annex C (informative) List of abbreviations .45
Bibliography.47

61291-5-2 © IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL AMPLIFIERS –
Part 5-2: Qualification specifications –
Reliability qualification for optical fibre amplifiers
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61291-5-2 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
FDIS Report on voting
86C/434/FDIS 86C/462/RVD
Full information on the voting for the approval of this standard can be found in the
...