Guidelines for combining different single-mode fibre sub-categories

IEC TR 62000:2021 is available as IEC TR 62000:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
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.

General Information

Status
Published
Publication Date
02-Sep-2021
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
03-Sep-2021
Ref Project

Buy Standard

Technical report
IEC TR 62000:2021 - Guidelines for combining different single-mode fibre sub-categories
English language
11 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

IEC TR 62000
Edition 3.0 2021-09
TECHNICAL
REPORT
colour
inside
Guidelines for combining different single‑mode fibre sub‑categories
IEC TR 62000:2021-09(en)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2021 IEC, Geneva, Switzerland

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 have

committee, …). It also gives information on projects, replaced 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 once
and French, with equivalent terms in 18 additional languages.
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.
---------------------- Page: 2 ----------------------
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

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

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 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

---------------------- Page: 4 ----------------------
IEC TR 62000:2021 © IEC 2021 – 3 –
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.
---------------------- Page: 5 ----------------------
– 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.

---------------------- Page: 6 ----------------------
IEC TR 62000:2021 © IEC 2021 – 5 –
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.
---------------------- Page: 7 ----------------------
– 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 procedure.
2 Normative references
There are no normative references in this document.
3 Abbreviated terms
OTDR optical time domain reflectometer
PMD polarization mode dispersion
DWDM dense wavelength division multiplexing
NRZ non return to zero
RZ return to zero
4 System issues
The different characteristics of class B
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.