Optical amplifiers - Part 5-2: Qualification specifications - Reliability qualification for optical fibre amplifiers (IEC 61291-5-2:2017)

This part of IEC 61291 applies to optical amplifiers (OAs) and optically amplified, elementary
sub-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 independent 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 internal
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
reliability of OFA devices and sub-systems in order to minimize risks and to promote product
development and reliability qualification.

Lichtwellenleiter-Verstärker - Teil 5-2: Anerkennungsspezifikation - Zuverlässigkeitsanerkennung (IEC 61291-5-2:2017)

Amplificateurs optiques - Partie 5-2: Spécifications de qualification - Qualification de fiabilité pour amplificateurs à fibres optiques (IEC 61291-5-2:2017)

IEC 61291-5-2: 2017 s’applique aux amplificateurs optiques (AO) et aux sous‑systèmes élémentaires amplifiés optiquement pour des applications terrestres, utilisant des fibres actives (amplificateurs à fibres optiques, AFO), qui contiennent des dopants de terres rares, disponibles sur le marché. L’approche de boîte noire est utilisée dans le présent document. L’approche de boîte noire est adoptée afin de fournir des spécifications de produits qui sont indépendantes des détails de mise en service des AO. Pour les besoins de qualification de fiabilité, certaines informations sur les composants internes sont nécessaires; ces parties internes sont elles-mêmes traitées en tant que boîtes noires. Le présent document fournit des exigences relatives à l’évaluation de la fiabilité des AO en combinant la fiabilité de telles boîtes noires internes. Le présent document a pour objet de fournir la liste minimale des essais de qualification de fiabilité, des exigences en matière de critères de défaillance pendant les essais et de prévisions de fiabilité, et de donner des références normatives pertinentes afin d’établir une méthode normalisée pour l'évaluation de la fiabilité des modules et des sous-systèmes AFO afin de réduire le plus possible les risques et d’avancer le développement du produit et la qualification de la fiabilité. Cette deuxième édition annule et remplace la première édition parue en 2002. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) le contenu sur le système de management de la qualité a été retiré du domaine d’application, des termes et définitions et des exigences de fiabilité; b) le calcul du taux de défaillance dans le temps (FIT) a été déplacé à l’Annexe B (informative); c) les exigences relatives aux essais de chocs ont été modifiées; d) les abréviations ont été modifiées en fonction des modifications a) et b).

Optični ojačevalniki - 5-2. del: Kvalifikacijske specifikacije - Kvalifikacije zanesljivosti za optične vlakenske ojačevalnike (IEC 61291-5-2:2017)

Ta del standarda IEC 61291 se uporablja za optične ojačevalnike (OA) in optično ojačane osnovne podsisteme za prizemne aplikacije z uporabo aktivnih vlaken (ojačevalniki optičnih vlaken (OFA)), ki vsebujejo komercialno dostopne redke zemeljske dopante.
V tem dokumentu je uporabljen pristop po načelu črne skrinjice. Pristop po načelu črne skrinjice je uveljavljen za podajanje specifikacij izdelka, ki so neodvisne od podrobnosti implementacije optičnih ojačevalnikov. Za namene kvalifikacij zanesljivosti so potrebne nekatere informacije o notranjih komponentah. Ti notranji deli so obravnavani kot črne skrinjice. Ta dokument določa zahteve za ocenjevanje zanesljivosti optičnih ojačevalnikov s kombiniranjem zanesljivosti takih notranjih črnih skrinjic.
Namen tega dokumenta je določiti najmanjši seznam preskusov kvalifikacij zanesljivosti, določiti zahteve glede meril odpovedi med preskušanjem in predvidevanj o zanesljivosti ter navesti ustrezne normativne reference za določitev standardne metode za oceno zanesljivosti ojačevalnikov optičnih vlaken in podsistemov, da se zmanjša tveganje ter spodbuja razvoj in zanesljivost proizvoda.

General Information

Status
Published
Publication Date
11-Jul-2017
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Jun-2017
Due Date
12-Aug-2017
Completion Date
12-Jul-2017

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 61291-5-2:2017
01-september-2017
Nadomešča:
SIST EN 61291-5-2:2004
Optični ojačevalniki - 5-2. del: Kvalifikacijske specifikacije - Kvalifikacije
zanesljivosti za optične vlakenske ojačevalnike (IEC 61291-5-2:2017)

Optical amplifiers - Part 5-2: Qualification specifications - Reliability qualification for

optical fibre amplifiers (IEC 61291-5-2:2017)
Lichtwellenleiter-Verstärker - Teil 5-2: Anerkennungsspezifikation -
Zuverlässigkeitsanerkennung (IEC 61291-5-2:2017)

Amplificateurs optiques - Partie 5-2: Spécifications de qualification - Qualification de

fiabilité pour amplificateurs à fibres optiques (IEC 61291-5-2:2017)
Ta slovenski standard je istoveten z: EN 61291-5-2:2017
ICS:
33.180.30 Optični ojačevalniki Optic amplifiers
SIST EN 61291-5-2:2017 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61291-5-2:2017
---------------------- Page: 2 ----------------------
SIST EN 61291-5-2:2017
EUROPEAN STANDARD EN 61291-5-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2017
ICS 33.180.30 Supersedes EN 61291-5-2:2002
English Version
Optical amplifiers - Part 5-2: Qualification specifications -
Reliability qualification for optical fibre amplifiers
(IEC 61291-5-2:2017)

Amplificateurs optiques - Partie 5-2: Spécifications de Lichtwellenleiter-Verstärker - Teil 5-2:

qualification - Qualification de fiabilité pour amplificateurs Anerkennungsspezifikation - Zuverlässigkeitsanerkennung

à fibres optiques für Lichtwellenleiter-Verstärker
(IEC 61291-5-2:2017) (IEC 61291-5-2:2017)

This European Standard was approved by CENELEC on 2017-03-01. 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 CEN-CENELEC

Management Centre 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 CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 61291-5-2:2017 E
---------------------- Page: 3 ----------------------
SIST EN 61291-5-2:2017
EN 61291-5-2:2017
European foreword

The text of document 86C/1376/CDV, future edition 2 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 approved by CENELEC as EN 61291-5-2:2017.
The following dates are fixed:
(dop) 2017-12-02
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2020-06-02
• latest date by which the national standards conflicting with
the document have to be withdrawn
This document supersedes EN 61291-5-2:2002.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 61291-5-2:2017 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:

IEC 60068-2-1 NOTE Harmonized as EN 60068-2-1.
IEC 60068-2-6 NOTE Harmonized as EN 60068-2-6.
IEC 61300-2-1 NOTE Harmonized as EN 61300-2-1.
IEC 61300-2-2 NOTE Harmonized as EN 61300-2-2.
IEC 61300-2-5 NOTE Harmonized as EN 61300-2-5.
IEC 61300-2-9 NOTE Harmonized as EN 61300-2-9.
IEC 61300-2-18 NOTE Harmonized as EN 61300-2-18.
IEC 61300-2-19 NOTE Harmonized as EN 61300-2-19.
IEC 61300-2-22 NOTE Harmonized as EN 61300-2-22.
IEC 61300-2-42 NOTE Harmonized as EN 61300-2-42.
IEC 61300-2-44 NOTE Harmonized as EN 61300-2-44.
---------------------- Page: 4 ----------------------
SIST EN 61291-5-2:2017
EN 61291-5-2:2017
IEC 62005-2 NOTE Harmonized as EN 62005-2.
IEC 62343-2 NOTE Harmonized as EN 62343-2.
IEC 62572-3 NOTE Harmonized as EN 62572-3.
---------------------- Page: 5 ----------------------
SIST EN 61291-5-2:2017
EN 61291-5-2:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),

the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is

available here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-731 - International Electrotechnical - -
Vocabulary - Chapter 731: Optical fibre
communication
IEC 60068-2-2 2007 Environmental testing - Part 2-2: EN 60068-2-2 2007
Tests - Test B: Dry heat
IEC 60068-2-14 - Environmental testing - Part 2-14: EN 60068-2-14 -
Tests - Test N: Change of temperature
IEC 60068-2-21 - Environmental testing - Part 2-21: EN 60068-2-21 -
Tests - Test U: Robustness of
terminations and integral mounting
devices
IEC 60068-2-27 - Environmental testing - Part 2-27: EN 60068-2-27 -
Tests - Test Ea and guidance: Shock
IEC 60068-2-31 - Environmental testing - Part 2-31: EN 60068-2-31 -
Tests - Test Ec: Rough handling
shocks, primarily for equipment-type
specimens
IEC 60068-2-78 - Environmental testing - Part 2-78: EN 60068-2-78 -
Tests - Test Cab: Damp heat, steady
state
IEC 61291-1 - Optical amplifiers - Part 1: Generic EN 61291-1 -
specification
IEC 61300-2-4 - Fibre optic interconnecting devices and EN 61300-2-4 -
passive components - Basic test and
measurement procedures - Part 2-4:
Tests - Fibre/cable retention
IEC 62005-9-1 - Fibre optic interconnecting devices and EN 62005-9-1 -
passive components - Reliability -
Part 9-1: Qualification of passive
optical components
---------------------- Page: 6 ----------------------
SIST EN 61291-5-2:2017
EN 61291-5-2:2017
Publication Year Title EN/HD Year
IEC 62005-9-2 - 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
---------------------- Page: 7 ----------------------
SIST EN 61291-5-2:2017
---------------------- Page: 8 ----------------------
SIST EN 61291-5-2:2017
IEC 61291-5-2
Edition 2.0 2017-01
INTERNATIONAL
STANDARD
Optical amplifiers –

Part 5-2: Qualification specifications – Reliability qualification for optical fibre

amplifiers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.30 ISBN 978-2-8322-3855-4

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 9 ----------------------
SIST EN 61291-5-2:2017
– 2 – IEC 61291-5-2:2017 © IEC 2017
CONTENTS

FOREWORD ........................................................................................................................... 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

4.1.1 General ........................................................................................................... 7

4.1.2 Reliability qualification of components ............................................................. 7

4.1.3 Reliability qualification of the OFA assembly process ...................................... 8

4.1.4 Reliability qualification of the OFA device or sub-system ................................. 8

4.1.5 Structural similarity ........................................................................................ 10

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 ......................................................................... 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 for 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

---------------------- Page: 10 ----------------------
SIST EN 61291-5-2:2017
IEC 61291-5-2:2017 © IEC 2017 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL AMPLIFIERS –
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 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 Guides (hereafter referred to as “IEC

Publication(s)”). 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. 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 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 IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications 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 IEC 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 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) amendment of abbreviations related to changes a) and b).
---------------------- Page: 11 ----------------------
SIST EN 61291-5-2:2017
– 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 in

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 the 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 version of this publication may be issued at a later date.
---------------------- Page: 12 ----------------------
SIST EN 61291-5-2:2017
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

sub-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 independent 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 internal

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

reliability 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. For 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 – Part 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 and 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
---------------------- Page: 13 ----------------------
SIST EN 61291-5-2:2017
– 6 – IEC 61291-5-2:2017 © IEC 2017

IEC 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 62005-9-2, Reliability of fibre optic interconnecting devices
...

SLOVENSKI STANDARD
SIST EN 61291-5-2:2017
01-september-2017
1DGRPHãþD
SIST EN 61291-5-2:2004
2SWLþQLRMDþHYDOQLNLGHO.YDOLILNDFLMVNHVSHFLILNDFLMH.YDOLILNDFLMH
]DQHVOMLYRVWL]DRMDþHYDOQLNHRSWLþQLKYODNHQ ,(&

Optical amplifiers - Part 5-2: Qualification specifications - Reliability qualification for

optical fibre amplifiers (IEC 61291-5-2:2017)
Lichtwellenleiter-Verstärker - Teil 5-2: Anerkennungsspezifikation -
Zuverlässigkeitsanerkennung (IEC 61291-5-2:2017)

Amplificateurs optiques - Partie 5-2: Spécifications de qualification - Qualification de

fiabilité pour amplificateurs à fibres optiques (IEC 61291-5-2:2017)
Ta slovenski standard je istoveten z: EN 61291-5-2:2017
ICS:
33.180.30 2SWLþQLRMDþHYDOQLNL Optic amplifiers
SIST EN 61291-5-2:2017 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61291-5-2:2017
---------------------- Page: 2 ----------------------
SIST EN 61291-5-2:2017
EUROPEAN STANDARD EN 61291-5-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2017
ICS 33.180.30 Supersedes EN 61291-5-2:2002
English Version
Optical amplifiers - Part 5-2: Qualification specifications -
Reliability qualification for optical fibre amplifiers
(IEC 61291-5-2:2017)

Amplificateurs optiques - Partie 5-2: Spécifications de Lichtwellenleiter-Verstärker - Teil 5-2:

qualification - Qualification de fiabilité pour amplificateurs Anerkennungsspezifikation - Zuverlässigkeitsanerkennung

à fibres optiques für Lichtwellenleiter-Verstärker
(IEC 61291-5-2:2017) (IEC 61291-5-2:2017)

This European Standard was approved by CENELEC on 2017-03-01. 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 CEN-CENELEC

Management Centre 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 CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 61291-5-2:2017 E
---------------------- Page: 3 ----------------------
SIST EN 61291-5-2:2017
EN 61291-5-2:2017
European foreword

The text of document 86C/1376/CDV, future edition 2 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 approved by CENELEC as EN 61291-5-2:2017.
The following dates are fixed:
(dop) 2017-12-02
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2020-06-02
• latest date by which the national standards conflicting with
the document have to be withdrawn
This document supersedes EN 61291-5-2:2002.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 61291-5-2:2017 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:

IEC 60068-2-1 NOTE Harmonized as EN 60068-2-1.
IEC 60068-2-6 NOTE Harmonized as EN 60068-2-6.
IEC 61300-2-1 NOTE Harmonized as EN 61300-2-1.
IEC 61300-2-2 NOTE Harmonized as EN 61300-2-2.
IEC 61300-2-5 NOTE Harmonized as EN 61300-2-5.
IEC 61300-2-9 NOTE Harmonized as EN 61300-2-9.
IEC 61300-2-18 NOTE Harmonized as EN 61300-2-18.
IEC 61300-2-19 NOTE Harmonized as EN 61300-2-19.
IEC 61300-2-22 NOTE Harmonized as EN 61300-2-22.
IEC 61300-2-42 NOTE Harmonized as EN 61300-2-42.
IEC 61300-2-44 NOTE Harmonized as EN 61300-2-44.
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SIST EN 61291-5-2:2017
EN 61291-5-2:2017
IEC 62005-2 NOTE Harmonized as EN 62005-2.
IEC 62343-2 NOTE Harmonized as EN 62343-2.
IEC 62572-3 NOTE Harmonized as EN 62572-3.
---------------------- Page: 5 ----------------------
SIST EN 61291-5-2:2017
EN 61291-5-2:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),

the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is

available here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-731 - International Electrotechnical - -
Vocabulary - Chapter 731: Optical fibre
communication
IEC 60068-2-2 2007 Environmental testing - Part 2-2: EN 60068-2-2 2007
Tests - Test B: Dry heat
IEC 60068-2-14 - Environmental testing - Part 2-14: EN 60068-2-14 -
Tests - Test N: Change of temperature
IEC 60068-2-21 - Environmental testing - Part 2-21: EN 60068-2-21 -
Tests - Test U: Robustness of
terminations and integral mounting
devices
IEC 60068-2-27 - Environmental testing - Part 2-27: EN 60068-2-27 -
Tests - Test Ea and guidance: Shock
IEC 60068-2-31 - Environmental testing - Part 2-31: EN 60068-2-31 -
Tests - Test Ec: Rough handling
shocks, primarily for equipment-type
specimens
IEC 60068-2-78 - Environmental testing - Part 2-78: EN 60068-2-78 -
Tests - Test Cab: Damp heat, steady
state
IEC 61291-1 - Optical amplifiers - Part 1: Generic EN 61291-1 -
specification
IEC 61300-2-4 - Fibre optic interconnecting devices and EN 61300-2-4 -
passive components - Basic test and
measurement procedures - Part 2-4:
Tests - Fibre/cable retention
IEC 62005-9-1 - Fibre optic interconnecting devices and EN 62005-9-1 -
passive components - Reliability -
Part 9-1: Qualification of passive
optical components
---------------------- Page: 6 ----------------------
SIST EN 61291-5-2:2017
EN 61291-5-2:2017
Publication Year Title EN/HD Year
IEC 62005-9-2 - 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
---------------------- Page: 7 ----------------------
SIST EN 61291-5-2:2017
---------------------- Page: 8 ----------------------
SIST EN 61291-5-2:2017
IEC 61291-5-2
Edition 2.0 2017-01
INTERNATIONAL
STANDARD
Optical amplifiers –

Part 5-2: Qualification specifications – Reliability qualification for optical fibre

amplifiers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.30 ISBN 978-2-8322-3855-4

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 9 ----------------------
SIST EN 61291-5-2:2017
– 2 – IEC 61291-5-2:2017 © IEC 2017
CONTENTS

FOREWORD ........................................................................................................................... 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

4.1.1 General ........................................................................................................... 7

4.1.2 Reliability qualification of components ............................................................. 7

4.1.3 Reliability qualification of the OFA assembly process ...................................... 8

4.1.4 Reliability qualification of the OFA device or sub-system ................................. 8

4.1.5 Structural similarity ........................................................................................ 10

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 ......................................................................... 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 for 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

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SIST EN 61291-5-2:2017
IEC 61291-5-2:2017 © IEC 2017 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL AMPLIFIERS –
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 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 Guides (hereafter referred to as “IEC

Publication(s)”). 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. 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 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 IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications 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 IEC 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 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) amendment of abbreviations related to changes a) and b).
---------------------- Page: 11 ----------------------
SIST EN 61291-5-2:2017
– 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 in

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 the 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 version of this publication may be issued at a later date.
---------------------- Page: 12 ----------------------
SIST EN 61291-5-2:2017
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

sub-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 independent 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 internal

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

reliability 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. For 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 – Part 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 and 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
---------------------- Page: 13 ----------------------
SIST EN 61291-5-2:2017
– 6 – IEC 61291-5-2:2017 © IEC 2017

IEC 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 62005-9-2, Reliability of fibre optic interconnecting devices
...

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