IEC 61753-121-2:2010
(Main)Fibre optic interconnecting devices and passive components - Performance standard - Part 121-2: Simplex and duplex cords with single-mode fibre and cylindrical ferrule connectors for category C - Controlled environment
Fibre optic interconnecting devices and passive components - Performance standard - Part 121-2: Simplex and duplex cords with single-mode fibre and cylindrical ferrule connectors for category C - Controlled environment
IEC 61753-121-2:2010 specifies the test requirements for finished cable assemblies for use as patchcords, work area cords and equipment cords for applications in a controlled (C) environment according to IEC 61753-1, where the connectors already comply, with the Category C requirements of IEC 61753-1. The assemblies consist of simplex or duplex fibre optic cable terminated at each end of the cable with non-angled (PC) or angled (APC) polished single-mode fibre optic connectors with cylindrical ferrules. The wavelength of operation is between 1 260 nm and 1 625 nm.
Dispositifs d'interconnexion et composants passifs à fibres optiques - Norme de performance - Partie 121-2: Cordons simplex et duplex avec fibres unimodales, munis de connecteurs à férule cylindrique pour catégorie C - Environnement contrôlé
La CEI 61753-121-2:2010 spécifie les exigences relatives aux essais appliqués aux cordons finis utilisés en tant que cordons de brassage, cordons de zone de travail et cordons d'équipement, en vue d'applications dans un environnement contrôlé (C) conformément à la CEI 61753-1, là où les connecteurs sont déjà conformes, conjointement avec les exigences de la catégorie C de la CEI 61753-1. Les ensembles sont constitués de câbles à fibres optiques simplex ou duplex munis à chaque extrémité du câble de connecteurs à fibres optiques unimodales polies sans angle (PC) ou à angle (APC), comportant des férules cylindriques. La longueur d'onde de fonctionnement est comprise entre 1 260 nm et 1 625 nm.
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IEC 61753-121-2
®
Edition 1.0 2010-04
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 121-2: Simplex and duplex cords with single-mode fibre and cylindrical
ferrule connectors for category C – Controlled environment
IEC 61753-121-2:2010(E)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2010 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
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
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 corrigenda or an amendment might have been published.
ƒ 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.
ƒ 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.
ƒ 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.
ƒ 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
---------------------- Page: 2 ----------------------
IEC 61753-121-2
®
Edition 1.0 2010-04
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 121-2: Simplex and duplex cords with single-mode fibre and cylindrical
ferrule connectors for category C – Controlled environment
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
S
ICS 33.180.20 ISBN 978-2-88910-562-5
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – 61753-121-2 © IEC:2010(E)
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Terms and definitions .8
4 Description .9
4.1 General .9
4.2 Optical fibres.9
4.3 Cable design and construction.9
4.4 Optical connectors .9
4.4.1 Mechanical connectivity.9
4.4.2 Optical performance requirements .9
4.4.3 Connector set performance requirements .9
4.5 Cable bend radius .9
4.6 Identification.9
5 Tests .9
5.1 General .9
5.2 Measuring wavelengths .9
5.3 Test specimen.10
6 Test procedure .10
6.1 General .10
6.2 Visual examination .10
6.3 Fibre optic connector end face .10
6.4 Optical performance requirements.11
6.5 Climatic performance requirements .12
6.6 Mechanical performance requirements .13
7 Test report.15
Annex A (normative) Sample size requirements .16
Annex B (normative) Visual examination of outer cable sheath movement .17
Annex C (normative) Change of teperature .18
Annex D (normative) Static side load .19
Annex E (normative) Flexing strain relief of fibre optic devices .20
Bibliography.21
Figure B.1 – Initial marking of the cable sheath.17
Figure B.2 – Final visual examination .17
Figure C.1 – Change of temperature test configuration .18
Figure D.1 – Test apparatus for transmission with applied side load .19
Figure E.1 – Flexing test apparatus .20
Table 1 – Wavelengths for attenuation and return loss measurements .10
Table 2 – Visual examination requirements.10
Table 3 – End face requirements .10
Table 4 – Optical performance requirements.11
Table 5 – Climatic performance requirements .12
---------------------- Page: 4 ----------------------
61753-121-2 © IEC:2010(E) – 3 –
Table 6 – Mechanical performance requirements .13
Table A.1 – Sample size requirements.16
---------------------- Page: 5 ----------------------
– 4 – 61753-121-2 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 121-2: Simplex and duplex cords with single-mode
fibre and cylindrical ferrule connectors for category C –
Controlled environment
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 61753-121-2 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
FDIS Report on voting
86B/2988/FDIS 86B/3024/RVD
Full information on the voting for the approval of this standard 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.
---------------------- Page: 6 ----------------------
61753-121-2 © IEC:2010(E) – 5 –
A list of all parts of IEC 61753 series, published under the general title Fibre optic
interconnecting devices and passive components – Performance standard, can be found on the
IEC website.
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.
---------------------- Page: 7 ----------------------
– 6 – 61753-121-2 © IEC:2010(E)
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 121-2: Simplex and duplex cords with single-mode
fibre and cylindrical ferrule connectors for category C –
Controlled environment
1 Scope
This part of IEC 61753 specifies the test requirements for finished cable assemblies for use
as patchcords, work area cords and equipment cords for applications in a controlled (C)
environment according to IEC 61753-1, where the connectors already comply, with the
Category C requirements of IEC 61753-1. The assemblies consist of simplex or duplex fibre
optic cable terminated at each end of the cable with non-angled (PC) or angled (APC)
polished single-mode fibre optic connectors with cylindrical ferrules. The wavelength of
1
operation is between 1 260 nm and 1 625 nm.
The relevant requirements for mechanical and optical connectivity systems are covered by
mechanical and optical interface standards IEC 61754 series and IEC 61755 series
respectively. The relevant requirements for connector sets are covered by IEC 61753 series.
The relevant requirements for cable are covered by IEC 60794-2-50.
2 Normative references
The following referenced documents are indispensable for the application 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 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test
procedures
IEC 60794-2-50, Optical fibre cables – Part 2-50: Indoor cables – Family specification for
simplex and duplex cables for use in terminated cable assemblies
IEC 61300 series, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures
IEC 61300-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 1: General and guidance
IEC 61300-2-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-4: Tests – Fibre/cable retention
IEC 61300-2-5, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-5: Tests – Torsion
___________
1
Low wavelength limit depends on maximum cabled fibre cut-off wavelength specification.
---------------------- Page: 8 ----------------------
61753-121-2 © IEC:2010(E) – 7 –
IEC 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-22: Tests – Change of temperature
IEC 61300-2-42, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-42: Tests – Static side load for connectors
IEC 61300-2-44, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-44: Tests – Flexing of the strain relief of fibre optic
devices
IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-1: Examinations and measurements – Visual examination
IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of
changes in attenuation and return loss
IEC 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-15, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-15: Examinations and measurements – Dome
eccentricity of a convex polished ferrule endface
IEC 61300-3-16, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-16: Examinations and measurements – Endface radius
of spherically polished ferrules
IEC 61300-3-17, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-17: Examinations and measurements – Endface angle
of angle-polished ferrules
IEC 61300-3-22, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-22: Examinations and measurements – Ferrule
compression force
IEC 61300-3-23, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-23: Examination and measurements – Fibre position
relative to ferrule endface
IEC 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-28: Examinations and measurements – Transient loss
IEC 61300-3-34, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-34: Examinations and measurements – Attenuation of
random mated connectors
IEC 61300-3-35, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedure – Part 3-35: Examinations and measurements – Fibre optic
connector endface visual and automated inspection
IEC 61753 series, Fibre optic interconnecting devices and passive components –
Performance standard
IEC 61753-1, Fibre optic interconnecting devices and passive components – Performance
standard – Part 1: General and guidance for performance standards
---------------------- Page: 9 -------------
...
IEC 61753-121-2
®
Edition 1.0 2010-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 121-2: Simplex and duplex cords with single-mode fibre and cylindrical
ferrule connectors for category C – Controlled environment
Dispositifs d’interconnexion et composants passifs à fibres optiques – Norme
de performance –
Partie 121-2: Cordons simplex et duplex avec fibres unimodales, munis de
connecteurs à férule cylindrique pour catégorie C – Environnement contrôlé
IEC 61753-121-2:2010
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2010 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.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
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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 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 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:
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---------------------- Page: 2 ----------------------
IEC 61753-121-2
®
Edition 1.0 2010-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 121-2: Simplex and duplex cords with single-mode fibre and cylindrical
ferrule connectors for category C – Controlled environment
Dispositifs d’interconnexion et composants passifs à fibres optiques – Norme
de performance –
Partie 121-2: Cordons simplex et duplex avec fibres unimodales, munis de
connecteurs à férule cylindrique pour catégorie C – Environnement contrôlé
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 33.180.20 ISBN 978-2-88912-482-4
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – 61753-121-2 IEC:2010
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Description . 9
4.1 General . 9
4.2 Optical fibres . 9
4.3 Cable design and construction. 9
4.4 Optical connectors . 9
4.4.1 Mechanical connectivity . 9
4.4.2 Optical performance requirements . 9
4.4.3 Connector set performance requirements . 9
4.5 Cable bend radius . 9
4.6 Identification. 9
5 Tests . 9
5.1 General . 9
5.2 Measuring wavelengths . 9
5.3 Test specimen . 10
6 Test procedure . 10
6.1 General . 10
6.2 Visual examination . 10
6.3 Fibre optic connector end face . 10
6.4 Optical performance requirements . 11
6.5 Climatic performance requirements . 12
6.6 Mechanical performance requirements . 13
7 Test report. 15
Annex A (normative) Sample size requirements . 16
Annex B (normative) Visual examination of outer cable sheath movement . 17
Annex C (normative) Change of teperature . 18
Annex D (normative) Static side load . 19
Annex E (normative) Flexing strain relief of fibre optic devices . 20
Bibliography . 21
Figure B.1 – Initial marking of the cable sheath . 17
Figure B.2 – Final visual examination . 17
Figure C.1 – Change of temperature test configuration . 18
Figure D.1 – Test apparatus for transmission with applied side load . 19
Figure E.1 – Flexing test apparatus . 20
Table 1 – Wavelengths for attenuation and return loss measurements . 10
Table 2 – Visual examination requirements . 10
Table 3 – End face requirements . 10
Table 4 – Optical performance requirements . 11
Table 5 – Climatic performance requirements . 12
---------------------- Page: 4 ----------------------
61753-121-2 IEC:2010 – 3 –
Table 6 – Mechanical performance requirements . 13
Table A.1 – Sample size requirements . 16
---------------------- Page: 5 ----------------------
– 4 – 61753-121-2 IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 121-2: Simplex and duplex cords with single-mode
fibre and cylindrical ferrule connectors for category C –
Controlled environment
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 61753-121-2 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
This bilingual version, published in 2011-05, corresponds to the English version.
The text of this standard is based on the following documents:
FDIS Report on voting
86B/2988/FDIS 86B/3024/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
---------------------- Page: 6 ----------------------
61753-121-2 IEC:2010 – 5 –
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 61753 series, published under the general title Fibre optic
interconnecting devices and passive components – Performance standard, can be found on the
IEC website.
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.
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.
---------------------- Page: 7 ----------------------
– 6 – 61753-121-2 IEC:2010
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 121-2: Simplex and duplex cords with single-mode
fibre and cylindrical ferrule connectors for category C –
Controlled environment
1 Scope
This part of IEC 61753 specifies the test requirements for finished cable assemblies for use
as patchcords, work area cords and equipment cords for applications in a controlled (C)
environment according to IEC 61753-1, where the connectors already comply, with the
Category C requirements of IEC 61753-1. The assemblies consist of simplex or duplex fibre
optic cable terminated at each end of the cable with non-angled (PC) or angled (APC)
polished single-mode fibre optic connectors with cylindrical ferrules. The wavelength of
1
operation is between 1 260 nm and 1 625 nm.
The relevant requirements for mechanical and optical connectivity systems are covered by
mechanical and optical interface standards IEC 61754 series and IEC 61755 series
respectively. The relevant requirements for connector sets are covered by IEC 61753 series.
The relevant requirements for cable are covered by IEC 60794-2-50.
2 Normative references
The following referenced documents are indispensable for the application 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 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
IEC 60794-1-2, Optical fibre cables – Part 1-2: Generic specification – Basic optical cable test
procedures
IEC 60794-2-50, Optical fibre cables – Part 2-50: Indoor cables – Family specification for
simplex and duplex cables for use in terminated cable assemblies
IEC 61300 series, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures
IEC 61300-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 1: General and guidance
IEC 61300-2-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-4: Tests – Fibre/cable retention
IEC 61300-2-5, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-5: Tests – Torsion
___________
1
Low wavelength limit depends on maximum cabled fibre cut-off wavelength specification.
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61753-121-2 IEC:2010 – 7 –
IEC 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-22: Tests – Change of temperature
IEC 61300-2-42, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-42: Tests – Static side load for connectors
IEC 61300-2-44, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-44: Tests – Flexing of the strain relief of fibre optic
devices
IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-1: Examinations and measurements – Visual examination
IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of
changes in attenuation and return loss
IEC 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-15, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-15: Examinations and measurements – Dome
eccentricity of a convex polished ferrule endface
IEC 61300-3-16, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-16: Examinations and measurements – Endface radius
of spherically polished ferrules
IEC 61300-3-17, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-17: Examinations and measurements – Endface angle
of angle-polished ferrules
IEC 61300-3-22, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-22: Examinations and measurements – Ferrule
compression force
IEC 61300-3-23, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-23: Examination and measurements – Fibre position
relative to ferrule endface
IEC 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-28: Examinations and measurements – Transient loss
IEC 61300-3-34, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-34: Examinations and measurements – Attenuation of
random mated connectors
IEC 61300-3-35, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedure – Part 3-35: Examinations and measurements – Fibre optic
connector endface visual and automated inspection
IEC 61753 series, Fibre optic interconnecting devices and passive components –
Performance standard
IEC 61753-1, Fibre optic interconnecting devices and passive components – Performance
standard – Part 1: General and guidance for performance standards
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– 8 – 61753-121-2 IEC:2010
IEC 61753-021-2, Fibre optic interconnecting devices and passive components – Performance
standard – Part 021-2: Grade C/3 single-mode fibre optic connectors for category C –
Controlled environment
IEC 61754 series, Fibre optic connector interfaces
IEC 61755 series, Fibre optic connector optical interfaces
IEC 61755-2-1, Fibre optic connector optical interfaces – Part 2-1: Optical interface standard
single mode non-angled physically contacting fibres
IEC 61755-2-2, Fibre optic connector optical interfaces – Part 2-2: Optical interface standard
single mode angled physically contacting fibres
IEC/TR 61931, Fibre optic – Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC/TR 61931 and the
following apply.
3.1
change in attenuation
defined as peak to peak variation
3.2
connector set
complete assembly of components (plug-adaptor-plug) required to provide demountable
coupling between two or more optical fibres
3.3
cord
general term for terminated cable assembly, whatever the expected use is
Example: equipment cord, work area cord or patchcord.
3.4
equipment cord
cord connecting equipment to a distributor
3.5
patchcord
cord used within cross-connect implementations at distributors
3.6
terminated cable assembly
product defined as a fibre optic cable terminated with any passive fibre optic component on
both ends
3.7
work area cord
cord connecting the telecommunications outlet to the terminal equipment
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61753-121-2 IEC:2010 – 9 –
4 Description
4.1 General
Patchcords, work area cords and equipment cords (called cords in subsequent text) defined
according to this specification are terminated cable assemblies with optical connectors. The
cord comprises cable and terminated fibre optic connectors on each end.
The length, unless otherwise specified, is defined as being between the end faces of the
connectors.
4.2 Optical fibres
Optical fibres meeting the requirements of IEC 60793-2-50 for single-mode fibres (SM) B1.1,
B1.3 and B6_a shall be used.
4.3 Cable design and construction
Cable used for the cords shall conform to the requirements of IEC 60794-2-50.
4.4 Optical connectors
4.4.1 Mechanical connectivity
The dimensional interface requirements in IEC 61754 series shall be met.
4.4.2 Optical performance requirements
The functionality of the connections according to this specification is based upon physical
contact. All the connectors shall conform to the standard performance grade as defined in
IEC 61755 series. Considered attenuation grades are B, C and D. Considered return loss
grades are 1, 2 and 3.
4.4.3 Connector set performance requirements
Connector set shall conform to the requirements described in IEC 61753-021-2.
4.5 Cable bend radius
Care shall be taken to observe the minimum bend radius of the cable.
4.6 Identification
The connectors shall be identifiable as to type of fibre, type of connector, connector end face
(PC or angled-PC), polarity (for duplex cords), connection grade or other type of identification
required for administration.
5 Tests
5.1 General
All tests and measurements have been selected from the IEC 61300 series for connectors and
from the cable test procedure outlined in IEC 60794-1-2. Additional requirements to certain
tests are given in Annexes C, D and E.
5.2 Measuring wavelengths
Unless otherwise specified in the individual test details, all attenuation measurements are
made at the wavelengths given in Table 1.
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– 10 – 61753-121-2 IEC:2010
Table 1 – Wavelengths for attenuation and return loss measurements
Fibre type Single-mode
Centre wavelength (nm) 1 310 1 550 1 625
Return loss measurements shall be performed at the wavelengths specified in the individual
tests.
5.3 Test specimen
For this specification, a specimen is defined as a terminated cable assembly with optical
connectors according to the IEC 61754 series at all ends of the cord. All specimens shall be
marked according to identification requirements.
The sample size and product sourcing requirements are defined in Annex A.
The length of the test specimen shall be 3,0 m to 5,0 m with a tolerance of ± 0,5 m.
6 Test procedure
6.1 General
No deviation from the specified test method is allowed.
Unless otherwise specified, all tests shall be carried out at ambient temperature as specified
in IEC 61300-1.
6.2 Visual examination
A visual examination shall be carried out on all specimens before and after all mechanical and
climatic tests (see Table 2). The outer cable sheath shall be marked at the end of the
connector boot during the initial visual examination (see Annex B).
Table 2 – Visual examination requirements
No. Test Requirement Details
1 Visual examination No visible defects of Method: IEC 61300-3-1
cable or connectors
Examination: Product shall be visually checked without
magnification
6.3 Fibre optic connector end face
The performance of the fibre optic connection depends on characteristics of the end faces of
both connectors (see Table 3).
Table 3 – End face requirements
No. Test Requirement Details
2 End face geometry IEC 61755 series Method: IEC 61300-3-15, Apex offset
IEC 61300-3-16, Polishing radius
IEC 61300-3-17, Endface angle of angle-
polished ferrules
IEC 61300-3-23, Fibre position
3 Fibre optic cylindrical IEC 61755-2-1 Method: IEC 61300-3-35
connector end face visual
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61753-121-2 IEC:2010 – 11 –
No. Test Requirement Details
inspection
IEC 61755-2-2 Examination: Scratches, defects, debris
4 Ferrule compression force IEC 61754 series: for the Method: IEC 61300-3-22
connectorized buffered
NOTE This test is fibre Examination: Movement length, compression force
applicable to the IEC 60794-2-50:
connectors with spring additional requirements
loaded ferrule. for the ruggedized fibre
6.4 Optical performance requirements
Optical performance requirements for attenuation and return loss are given in the following
Table 4. These requirements in the Table 4 are related to connections between the same fibre
types.
Table 4 – Optical performance requirements
No. Test Requirement Details
5 Attenuation Grade D: Method: IEC 61300-3-34, Method 2
≤ 0,5 dB mean
Source type: LED/LD
≤ 1,0 dB for 97 %
Peak wavelength:
(1 310 ± 30) nm
Grade C:
(1 550 ± 30) nm
≤ 0,25 dB mean
(1 625 ± 30) nm
≤ 0,5 dB for 97 %
Source stability:
± 0,01 dB over 1 h
Grade B:
≤ 0,12 dB mean
Detector linearity:
Within ± 0,01 dB over the dynamic range to
≤ 0,25 dB for 97 %
be measured
Launch fibre length: > 2 m. Only the fundamental mode shall
propagate at the connector interface to be
tested and at the detector
Pre-conditioning Clean plug and adaptor according to
procedure: manufacturer’s instructions
6 Return loss Method: IEC 61300-3-6, Method 1
Grade 1: ≥ 60 dB
Wavelengths: (1 310 ± 30) nm
Grade 2: ≥ 45 dB
(1 550 ± 30) nm
(1 625 ± 30) nm
Grade 3: ≥ 35 dB
Source stability: ± 0,01 dB over 1 h
Detector linearity:
± 0,1 dB over the dynamic range to be
measured
NOTE 1 Patchcord attenuation corresponds to the loss of two connections.
NOTE 2 The requirements for return loss are valid only for one connection.
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