IEC TR 62721:2012
(Main)Reliability of devices used in fibre optic systems - General and guidance
Reliability of devices used in fibre optic systems - General and guidance
IEC/TR 62721:2012(E) provides information on the IEC documents concerning reliability for optical fibres, optical connectors, optical passive components, optical active components, optical amplifiers, and optical dynamic modules used for optical fibre communications.
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IEC/TR 62721 ®
Edition 1.0 2012-01
TECHNICAL
REPORT
Reliability of devices used in fibre optic systems – General and guidance
IEC/TR 62721:2012(E)
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IEC/TR 62721 ®
Edition 1.0 2012-01
TECHNICAL
REPORT
Reliability of devices used in fibre optic systems – General and guidance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
P
ICS 33.180.01 ISBN 978-2-88912-867-9
– 2 – TR 62721 IEC:2012(E)
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope and objective . 6
2 Normative references . 6
3 Generic information on reliability . 7
4 IEC documents on reliability in TC86 . 8
4.1 General . 8
4.2 Reliability documents for optical fibres and cables . 9
4.3 Reliability documents on optical interconnecting devices and passive optical
components . 10
4.4 Reliability documents on optical amplifiers . 13
4.5 Reliability documents on optical active devices . 13
4.6 Reliability documents on optical dynamic modules . 14
Annex A (informative) Document list for high power handling and transmission in fibre
optics . 15
Bibliography . 16
Table 1 – IEC documents on reliability of fibre optic devices . 9
TR 62721 IEC:2012(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RELIABILITY OF DEVICES USED IN FIBRE OPTIC SYSTEMS –
GENERAL AND GUIDANCE
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
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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.
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 62721, which is a technical report, has been prepared by IEC technical committee 86:
Fibre optics.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
86/406/DTR 86/412/RVC
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
– 4 – TR 62721 IEC:2012(E)
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
TR 62721 IEC:2012(E) – 5 –
INTRODUCTION
TC86 (Fibre optics) is a group that reviews and implements the standardization of optical
fibres and optical cables, optical interconnecting devices, passive and active optical
components and modules, and optical sub-systems. As these optical components and
modules are used for telecommunications as well as data communications systems, the
reliability required for these are extremely high. Since the 1980s, when fibre optic
communication systems were first deployed for commercial use, the reliability of optical fibres,
optical components and modules has been examined and checked. As a result, reliability
theories are nearly completely established for optical fibre, optical connectors, optical passive
components and optical active components.
How to check reliability differs depending on the type of optical device. For example, for
optical fibres, it is measured by the probability of fibre breaks under the condition of constant
stress. Optical passive components are generally tested using accelerated deterioration tests
under high temperature and high humidity conditions. For the reliability of laser diodes (LD) (a
typical optical active device), the primary failure mode is a decrease of optical output power
and an increase of threshold electric current caused by the increase of the leakage of
electrical current in the active layers of the LD chip. The lifetime has an inverse correlation
with the drive current.
In addition, the industry has established and uses standard reliability evaluation tests
developed for the purpose of commercialisation in addition to the approach of estimating the
lifetime by failure mode analysis mentioned above.
Information on failure mode and lifetime estimates are discussed and summarised in many
documents prepared by the Subcommittees (SC) and Working Groups (WG) of TC86. Test
items and conditions for reliability qualification tests are described in documents prepared and
set forth by each SC.
– 6 – TR 62721 IEC:2012(E)
RELIABILITY OF DEVICES USED IN FIBRE OPTIC SYSTEMS –
GENERAL AND GUIDANCE
1 Scope and objective
This technical report provides information on the IEC documents concerning reliability for
optical fibres, optical connectors, optical passive components, optical active components,
optical amplifiers, and optical dynamic modules used for optical fibre communications.
Documents on reliability include summaries of reliability theory and quality management
methods, technical information on failure mode analysis and failure mechanisms, lifetime and
fit-rate estimates using acceleration tests, test items, conditions, and pass/fail criteria in
reliability qualification tests, and tests and measurement methods for optical fibres, optical
components, and optical modules.
Each SC in TC86 has already created documents on reliability. This technical report provides
this information in a user-friendly manner.
2 Normative references
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.
IEC 60068 (all parts), Environmental testing
IEC 60749 (all parts), Semiconductor devices – Mechanical and climatic test methods
IEC 60793-1 (all parts), Optical fibres – Part 1: Measurement methods and test procedures
IEC 60793-1-30, Optical fibres – Part 1-30: Measurement methods and test procedures –
Fibre proof test
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test
procedures
IEC 61290 (all parts), Optical amplifiers – Test methods
IEC 61291-5-2, Optical amplifiers – Part 5-2: Qualification specifications – Reliability
qualification for optical fibre amplifiers
IEC 61300 (all parts), Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures
IEC 62005 (all parts), Reliability of fibre optic interconnecting devices and passive
components
IEC 62007-2, Semiconductor optoelectronic devices for fibre optic system applications –
Part 2: Measuring methods
TR 62721 IEC:2012(E) – 7 –
IEC 62150 (all parts), Fibre optic active components and devices – Test and measurement
procedures
IEC 62343-2, Dynamic modules – Part 2: Reliability qualification
IEC 62343-5-1, Dynamic modules – Test methods – Part 5-1: Dynamic gain tilt equalizer –
Response time measurement
IEC 62572-3, Fibre optic active components and devices – Reliability standards – Part 3:
Laser modules used for telecommunication
IEC/TR 62048, Optical fibres – Reliability – Power law theory
IEC/TR 62343-6-6, Dynamic modules – Part 6-6: Failure mode effect analysis for optical units
of dynamic modules
IEC/TR 62572-2, Fibre optic active components and devices – Reliability standards
...
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