IEC TR 62000:2021
(Main)Guidelines for combining different single-mode fibre sub-categories
Guidelines for combining different single-mode fibre sub-categories
IEC TR 62000:2021 provides guidelines concerning single-mode fibre inter-compatibility. A given category of single-mode fibre, for example B-655, can have different implementations by suitably optimising several of the following parameters: mode field diameter (hence effective area), chromatic dispersion coefficient, slope of the chromatic dispersion curve, cable cut-off wavelength. These guidelines indicate the items that are taken into account when planning to connect
- different implementations of single-mode fibres of the same category, for example different implementations of Class B single-mode fibres, and
- single-mode fibres of different sub-categories, for example B-652.B with B-655.C.
This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- global uniformity of terminology concerning fibre classes, categories and sub-categories throughout the document;
- updating and aligning to the new naming convention of IEC 60793-2-50 for class B fibre categories and sub-categories;
- updating and aligning with IEC 60793-2-50 as per supported fibre sub-categories;
- additional guidelines concerning combination of fibre parameters: chromatic dispersion and slope, polarization mode dispersion;
- additional guidelines concerning non-linear affects;
- updating of bibliographical references.
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IEC TR 62000 ®
Edition 3.0 2021-09
TECHNICAL
REPORT
colour
inside
Guidelines for combining different single‑mode fibre sub‑categories
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
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IEC TR 62000 ®
Edition 3.0 2021-09
TECHNICAL
REPORT
colour
inside
Guidelines for combining different single‑mode fibre sub‑categories
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-1021-2
– 2 – IEC TR 62000:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 6
3 Abbreviated terms . 6
4 System issues . 6
5 Optical fibre issues . 7
5.1 General . 7
5.2 Cut-off wavelength . 7
5.3 Splicing issues . 7
5.4 Combination of fibre parameters: chromatic dispersion coefficient and slope,
polarization mode dispersion (PMD) . 8
5.5 Non-linear effects . 8
6 Launch fibres, pigtails, patch-cords and jumper cables . 9
7 Attenuation . 9
8 Summary . 9
Bibliography . 11
Table 1 – Correspondence table of various single-mode fibres . 5
Table 2 – Recommended level of attention to be dedicated to each issue when
connecting fibre types . 10
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINES FOR COMBINING DIFFERENT SINGLE‑MODE FIBRE
SUB‑CATEGORIES
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.
IEC TR 62000 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical
committee 86: Fibre optics. It is a Technical Report.
This third edition cancels and replaces the second edition published in 2010. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) global uniformity of terminology concerning fibre classes, categories and sub-categories
throughout the document;
b) updating and aligning to the new naming convention of IEC 60793-2-50 for class B fibre
categories and sub-categories;
c) updating and aligning with IEC 60793-2-50 as per supported fibre sub-categories;
d) additional guidelines concerning combination of fibre parameters: chromatic dispersion and
slope, polarization mode dispersion;
e) additional guidelines concerning non-linear affects;
f) updating of bibliographical references.
– 4 – IEC TR 62000:2021 © IEC 2021
The text of this Technical Report is based on the following documents:
Draft Report on voting
86A/2114/DTR 86A/2129/RVDTR
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Report is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
GUIDELINES FOR COMBINING DIFFERENT SINGLE‑MODE FIBRE
SUB‑CATEGORIES
1 Scope
This document provides guidelines concerning single-mode fibre inter-compatibility.
A given category of single-mode fibre, for example B-655, can have different implementations
by suitably optimising several of the following parameters: mode field diameter (hence effective
area), chromatic dispersion coefficient, slope of the chromatic dispersion curve, cable cut-off
wavelength.
These guidelines indicate the items that are taken into account when planning to connect
1) different implementations of single-mode fibres of the same category, for example different
implementations of Class B single-mode fibres, and
2) single-mode fibres of different sub-categories, for example B-652.B with B-655.C.
See IEC 60793-2-50 for the attributes and definitions of single-mode fibre. The attributes and
definitions of fibres covered in this document are given in Table 1.
Table 1 – Correspondence table of various single-mode fibres
Common name Use (IEC 60793-2-50) IEC sub‑category ITU-T
Recommendation
Dispersion Optimised for use in the 1 310 nm region but B-652.B G.652.B
unshifted fibre can be used in the 1 550 nm region.
Extended band Optimised for use in the 1 310 nm region but B-652.D G.652.D
dispersion can be used in the O, E, S, C and L-band (i.e.
unshifted fibre throughout the 1 260 nm to 1 625 nm range).
Dispersion Optimised for single channel transmission in B-653.A G.653.A
shifted fibre the 1 550 nm region. Multiple channels can
only be transmitted if care is taken to avoid
non-linear effects such as four wave mixing by,
B-653.B G.653.B
for example, moderating the power levels or
appropriate spacing or placement of the
channels.
Cut-off shifted Optimised for low loss in the 1 550 nm region, B-654.A G.654.A
fibre with cut off wavelength shifted above the
B-654.B G.654.B
1 310 nm region.
B-654.C G.654.C
B-654.D G.654.D
B-654.E G.654.E
Non-zero Optimised for multiple channel transmission in B-655.C G.655.C
dispersion- the 1 530 to 1 625 nm region with a positive or
B-655.D G.655.D
shifted fibre negative, non-zero chromatic dispersion and a
cut off wavelength that can be shifted above
B-655.E G.655.E
the 1 310 nm region.
Wideband non- Optimised for multiple channel transmission in B-656 G.656
zero dispersion- the wavelength range of 1 460 nm to 1 625 nm
shifted fibre with the positive value of the chromatic
dispersion coefficient that is greater than some
non-zero value over the same wavelength
range.
– 6 – IEC TR 62000:2021 © IEC 2021
Common name Use (IEC 60793-2-50) IEC sub‑category ITU-T
Recommendation
Bending loss Bending loss insensitive single-mode fibre B-657.A1 G.657.A1
insensitive fibre suitable for use in the access networks,
including inside buildings at the end of these
B-657.A2 G.657.A2
networks.
They are suitable to be used in the O, E, S, C
B-657.B2 G.657.B2
and L-band (i.e. throughout the 1 260 nm to
1 625 nm range) and, in the case of
B‑657.A1 and B-657.A2, meet the requirements
B-657.B3 G.657.B3
of B-652.D fibres.
Subcategories B-657.B2 and B-657.B3 fibres
are intended to be used for restricted distances
(less than 1 000 m) at the end of access
networks, in particular inside buildings
or near buildings (e.g. outside building riser
cabling).
This document does not consider the connection of fibres with the same category from different
manufacturers, which is already considered by the standardisation pr
...
IEC TR 62000 ®
Edition 3.0 2021-09
REDLINE VERSION
TECHNICAL
REPORT
colour
inside
Guidelines for combining different single-mode fibres types fibre sub-categories
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TR 62000 ®
Edition 3.0 2021-09
REDLINE VERSION
TECHNICAL
REPORT
colour
inside
Guidelines for combining different single-mode fibres types fibre sub-categories
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-4528-6
– 2 – IEC TR 62000:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 7
3 Abbreviated terms . 7
4 System issues . 7
5 Optical fibre issues . 8
5.1 General . 8
5.2 Cut-off wavelength . 8
5.3 Splicing issues . 8
5.4 Combination of fibre parameters: chromatic dispersion coefficient and slope,
polarization mode dispersion (PMD) . 9
5.5 Non-linear effects . 9
6 Launch fibres, pigtails, patch-cords and jumper cables . 10
7 Attenuation . 10
8 Summary . 10
Bibliography . 14
Table 1 – Correspondence table of various single-mode fibres . 5
Table 2 – Suggested level of attention to be dedicated to each issue when connecting
fibre types . 11
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINES FOR COMBINING DIFFERENT SINGLE‑MODE FIBRES TYPES
FIBRE SUB‑CATEGORIES
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.
This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC TR 62000:2010. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
– 4 – IEC TR 62000:2021 RLV © IEC 2021
IEC TR 62000 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical
committee 86: Fibre optics. It is a Technical Report.
This third edition cancels and replaces the second edition published in 2010. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) global uniformity of terminology concerning fibre classes, categories and sub-categories
throughout the document;
b) updating and aligning to the new naming convention of IEC 60793-2-50 for class B fibre
categories and sub-categories;
c) updating and aligning with IEC 60793-2-50 as per supported fibre sub-categories;
d) additional guidelines concerning combination of fibre parameters: chromatic dispersion and
slope, polarization mode dispersion;
e) additional guidelines concerning non-linear affects;
f) updating of bibliographical references.
The text of this Technical Report is based on the following documents:
Draft Report on voting
86A/2114/DTR 86A/2129/RVDTR
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Report is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
GUIDELINES FOR COMBINING DIFFERENT SINGLE‑MODE FIBRES TYPES
FIBRE SUB‑CATEGORIES
1 Scope
This document provides guidelines concerning single-mode fibre inter-compatibility.
A given type category of single-mode fibre, for example B4 B-655, may can have different
implementations by suitably optimising several of the following parameters: mode field diameter
(hence effective area), chromatic dispersion coefficient, slope of the chromatic dispersion
curve, cable cut-off wavelength.
These guidelines indicate the items that should be are taken into account when planning to
connect
1) different implementations of single-mode fibres of the same type category, for example
different implementations of type Class B single-mode fibres, and
2) single-mode fibres of different types sub-categories, for example B1.1 B-652.B with B4 B-
655.C.
See IEC 60793-2-50 for the attributes and definitions of single-mode fibre. The attributes and
definitions of fibres covered in this document are given in Table 1.
Table 1 – Correspondence table of various single-mode fibres
ITU-T
Common name IEC Class
Use (IEC 6079-2-50)
Recommendation
Dispersion B1.1 G.652 A, B
Optimised for use in the 1 310 nm region but can
be used in the 1 550 nm region
unshifted single-
mode fibre
Cut-off shifted B1.2 G.654
Optimised for low loss in the 1 550 nm region,
single-mode fibre
with cut off wavelength shifted above the 1 310
nm region
Extended band B1.3 G.652 C, D
Optimised for use in the 1 310 nm region but can
dispersion unshifted
be used in the O, E, S, C and L-band (i.e.
single-mode fibre
throughout the 1 260 nm to 1 625 nm range).
Dispersion shifted B.2 G.653
Optimised for single channel transmission in the
single-mode fibre
1 550 nm region. Multiple channels can only be
transmitted if care is taken to avoid the effects of
four wave mixing by, for example, moderating the
power levels or appropriate spacing or placement
of the channels
Non-zero B4 G.655
Optimised for multiple channel transmission in
dispersion-shifted
the 1 550 nm region with a cut off wavelength
single-mode fibre
that may be shifted above the 1 310 nm region
Wideband non-zero B5 G.656
Optimised for multiple channel transmission in
dispersion-shifted
the wavelength range of 1 460 to 1 625 nm with
single-mode fibre
the positive value of the chromatic dispersion
– 6 – IEC TR 62000:2021 RLV © IEC 2021
ITU-T
Common name IEC Class
Use (IEC 6079-2-50) Recommendation
coefficient that is greater than some non-zero
value over the same wavelength range.
Bend loss optimised B6_a G.657.A
Bending loss insensitive single-mode fibre
suitable for use in the access networks, including
inside buildings at the end of these networks.
B6_a fibres are suitable to be used in the O, E,
S, C and L-band (i.e. throughout the 1 260 nm to
1 625 nm range) and meet the requirements of
B1.3 fibres.
B6_b G.657.B
Bending loss insensitive single-mode fibre
suitable for use in the access networks, including
inside buildings at the end of these networks.
B6_b fibres are suitable for transmission at 1 310
nm, 1 550 nm, and 1 625 nm for restricted
distances that are associated with in-building
transport of signals.
Common name Use (IEC 6079
...
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