IEC TR 62000:2010
(Main)Guidance for combining different single-mode fibres types
Guidance for combining different single-mode fibres types
IEC/TR 62000:2010(E) provides guidelines indicating the items that should be taken into account when planning to connect:
(1) different implementations of single-mode fibres of the same type, e.g. different implementations of type B single-mode fibres, and
(2) single-mode fibres of different types, e.g. B1.1 with B4. The major technical changes with respect to the previous edition are considerations concerning B6 fibres.
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IEC/TR 62000 ®
Edition 2.0 2010-11
TECHNICAL
REPORT
colour
inside
Guideline for combining different single-mode fibres types
IEC/TR 62000:2010(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
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IEC/TR 62000 ®
Edition 2.0 2010-11
TECHNICAL
REPORT
colour
inside
Guideline for combining different single-mode fibres types
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
L
ICS 33.180.10 ISBN 978-2-88912-268-4
– 2 – TR 62000 Ó IEC:2010(E)
CONTENTS
FOREW ORD . 3
1 Sc o pe . 5
2 Abbrev iations . 6
3 System issues . 6
4 Fibre issues . 6
4.1 Ge n eral . 6
4.2 Cut-off wavelength . 7
4.3 Splicing issues . 7
4.4 Combination of fibre parameters: chromatic dispersion coefficient and slope,
polarization mode dispersion (PMD) . 8
4.5 Non-linear effects . 8
5 Launch fibres, pigtails, patch-cords and jumper cables . 9
6 Attenuation . 9
7 Summary . 9
Bibliography . 11
TR 62000 Ó IEC:2010(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINE FOR COMBINING DIFFERENT SINGLE-MODE FIBRES TYPES
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.
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 62000, which is a technical report, has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86:Fibre optics.
This second edition cancels and replaces the first edition (2005) and constitutes a technical
revision.
The major technical changes with respect to the previous edition are considerations
concerning B6 fibres.
– 4 – TR 62000 Ó IEC:2010(E)
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
86A/1276/DTR 86A/1283/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.
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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication 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.
TR 62000 Ó IEC:2010(E) – 5 –
GUIDELINE FOR COMBINING DIFFERENT SINGLE-MODE FIBRES TYPES
1 Scope
This technical report provides guidelines concerning single-mode fibre compatibility.
A given type of single-mode fibre, for example B4, may 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.
This guideline indicates the items that should be taken into account when planning to connect:
(1) different implementations of single-mode fibres of the same type, e.g. different
implementations of type B single-mode fibres, and (2) single-mode fibres of different types,
e.g. B1.1 with B4. See IEC 60793-2-50 for the attributes and definitions of single-mode fibre.
The attributes and definitions of fibres covered in this technical report are given in Table 1.
Table 1 – Correspondence table of various single-mode fibres
me Use (IEC 60793-2-50) IEC
IEC ITU-T
Common name Use (IEC 6079-2-50)
Class Recommendation
Dispersion B1.1 G.652 A, B
Optimised for use in the 1 310 nm region but can
unshifted single-
be used in the 1 550 nm region
mode fibre
Cut-off shifted single- B1.2 G.654
Optimised for low loss in the 1 550 nm region,
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 dispersion- B4 G.655
Optimised for multiple channel transmission in
shifted single-mode
the 1 550 nm region with a cut off wavelength
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
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.
– 6 – TR 62000 Ó IEC:2010(E)
IEC ITU-T
Common name Use (IEC 6079-2-50)
Class Recommendation
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.
This guide does not consider the connection of fibres with the same implementation from
different manufacturers, which is already considered by the standardisation procedure.
2 Abbreviations
OTDR: Optical Time Domain Reflectometre
PMD: Polarization Mode Dispersion
DWDM: Dense Wavelength Division Multiplexing
NRZ: Non Return to Zero
RZ: Return to Zero
3 System issues
The different characteristics of B type fibres can be explicitly combined to optimise system
performance in terms of the dispersion characteristic (global dispersion coefficients, slope) of
the link. It is in fact possible to combine fibres with opposite signs of the dispersion coefficient
in a given wavelength range to bring the total link dispersion to near-zero in that range. The
final result will however depend on the accuracy of individual fibre dispersion measurements
and the ability to match lengths.
The process of combining fibres with different dispersion coefficient characteristics can be
one of the ways to make dispersion management in a transmission line (the most common
one being the periodical insertion of dispersion compensating modules).
Combining fibres with different effective area is also a possible way to minimise the overall
impact of non-linear effects. For instance, it is possible to place large effective area fibres in
the initial section of a link, where
...
IEC/TR 62000 ®
Edition 2.0 2010-11
TECHNICAL
REPORT
colour
inside
Guideline for combining different single-mode fibres types
IEC/TR 62000:2010(E)
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.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.
IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
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 corrigenda or an amendment might have been published.
§ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
§ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
§ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
§ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC/TR 62000 ®
Edition 2.0 2010-11
TECHNICAL
REPORT
colour
inside
Guideline for combining different single-mode fibres types
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
L
ICS 33.180.10 ISBN 978-2-88912-268-4
– 2 – TR 62000 Ó IEC:2010(E)
CONTENTS
FOREW ORD . 3
1 Sc o pe . 5
2 Abbrev iations . 6
3 System issues . 6
4 Fibre issues . 6
4.1 Ge n eral . 6
4.2 Cut-off wavelength . 7
4.3 Splicing issues . 7
4.4 Combination of fibre parameters: chromatic dispersion coefficient and slope,
polarization mode dispersion (PMD) . 8
4.5 Non-linear effects . 8
5 Launch fibres, pigtails, patch-cords and jumper cables . 9
6 Attenuation . 9
7 Summary . 9
Bibliography . 11
TR 62000 Ó IEC:2010(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GUIDELINE FOR COMBINING DIFFERENT SINGLE-MODE FIBRES TYPES
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.
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 62000, which is a technical report, has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86:Fibre optics.
This second edition cancels and replaces the first edition (2005) and constitutes a technical
revision.
The major technical changes with respect to the previous edition are considerations
concerning B6 fibres.
– 4 – TR 62000 Ó IEC:2010(E)
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
86A/1276/DTR 86A/1283/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.
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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication 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.
TR 62000 Ó IEC:2010(E) – 5 –
GUIDELINE FOR COMBINING DIFFERENT SINGLE-MODE FIBRES TYPES
1 Scope
This technical report provides guidelines concerning single-mode fibre compatibility.
A given type of single-mode fibre, for example B4, may 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.
This guideline indicates the items that should be taken into account when planning to connect:
(1) different implementations of single-mode fibres of the same type, e.g. different
implementations of type B single-mode fibres, and (2) single-mode fibres of different types,
e.g. B1.1 with B4. See IEC 60793-2-50 for the attributes and definitions of single-mode fibre.
The attributes and definitions of fibres covered in this technical report are given in Table 1.
Table 1 – Correspondence table of various single-mode fibres
me Use (IEC 60793-2-50) IEC
IEC ITU-T
Common name Use (IEC 6079-2-50)
Class Recommendation
Dispersion B1.1 G.652 A, B
Optimised for use in the 1 310 nm region but can
unshifted single-
be used in the 1 550 nm region
mode fibre
Cut-off shifted single- B1.2 G.654
Optimised for low loss in the 1 550 nm region,
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 dispersion- B4 G.655
Optimised for multiple channel transmission in
shifted single-mode
the 1 550 nm region with a cut off wavelength
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
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.
– 6 – TR 62000 Ó IEC:2010(E)
IEC ITU-T
Common name Use (IEC 6079-2-50)
Class Recommendation
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.
This guide does not consider the connection of fibres with the same implementation from
different manufacturers, which is already considered by the standardisation procedure.
2 Abbreviations
OTDR: Optical Time Domain Reflectometre
PMD: Polarization Mode Dispersion
DWDM: Dense Wavelength Division Multiplexing
NRZ: Non Return to Zero
RZ: Return to Zero
3 System issues
The different characteristics of B type fibres can be explicitly combined to optimise system
performance in terms of the dispersion characteristic (global dispersion coefficients, slope) of
the link. It is in fact possible to combine fibres with opposite signs of the dispersion coefficient
in a given wavelength range to bring the total link dispersion to near-zero in that range. The
final result will however depend on the accuracy of individual fibre dispersion measurements
and the ability to match lengths.
The process of combining fibres with different dispersion coefficient characteristics can be
one of the ways to make dispersion management in a transmission line (the most common
one being the periodical insertion of dispersion compensating modules).
Combining fibres with differe
...
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