IEC 61753-2-3:2001

INTERNATIONAL IEC
STANDARD
61753-2-3
First edition
2001-07
Fibre optic interconnecting devices and passive
components performance standard –
Part 2-3:
Non-connectorised single-mode 1×N and 2×N
non-wavelength-selective branching devices
for Category U –
Uncontrolled environment
Norme de qualité de fonctionnement des dispositifs
d'interconnexion et composants passifs à fibres optiques –
Partie 2-3:
Dispositifs de couplage non-connectorisés monomodes
1×N et 2×N ne dépendant pas de la longueur d'onde
pour catégorie U –
Environnement non contrôlé
Reference number
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INTERNATIONAL IEC
STANDARD
61753-2-3
First edition
2001-07
Fibre optic interconnecting devices and passive
components performance standard –
Part 2-3:
Non-connectorised single-mode 1xN and 2xN
non-wavelength-selective branching devices
for Category U –
Uncontrolled environment
Norme de qualité de fonctionnement des dispositifs
d'interconnexion et composants passifs à fibres optiques –
Partie 2-3:
Dispositifs de couplage non-connectorisés monomodes
1×N et 2×N ne dépendant pas de la longueur d'onde
pour catégorie U –
Environnement non contrôlé
 IEC 2001  Copyright - all rights reserved
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– 2 – 61753-2-3 © IEC:2001(E)
CONTENTS
FOREWORD . 3

1 Scope . 5

2 Normative references. 5

3 Test . 6

4 Test report . 7

5 Performance requirements . 7

5.1 Sample size, sequencing and grouping . 7
5.2 Test details and requirements . 7
Annex A (informative) Examples of attenuation requirements of 1×N and 2×N branching
devices. 15
Annex B (normative) Sample size, sequencing and grouping. 17
Table A.1 – Attenuation requirements of balanced branching devices having the most
common port configurations for Class 1 application . 15
Table A.2 – Attenuation requirements of 1×2 and 2×2 unbalanced branching
devices having the most common port configurations for Class 1 application. 15
Table A.3 – Attenuation requirements of balanced branching devices having the most
common port configurations for Class 2 application . 16
Table A.4 – Attenuation requirements of balanced branching devices having the most
common port configurations for Class 3 application . 16
Table B.1 – Sample size and sequencing and grouping of tests. 17

61753-2-3 © IEC:2001(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

___________
FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE

COMPONENTS PERFORMANCE STANDARD –

Part 2-3: Non-connectorised single-mode 1×N and 2×N non-wavelength-

selective branching devices for Category U – Uncontrolled environment

FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61753-2-3 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/1509/FDIS 86B/1548/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 3.
Annex B forms an integral part of this standard.
Annex A is for information only.

– 4 – 61753-2-3 © IEC:2001(E)
The committee has decided that the contents of this publication will remain unchanged until
2008. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or

• amended.
61753-2-3 © IEC:2001(E) – 5 –
FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE

COMPONENTS PERFORMANCE STANDARD –

Part 2-3: Non-connectorised single-mode 1×N and 2×N non-wavelength-

selective branching devices for Category U – Uncontrolled environment

1 Scope
This part of IEC 61753 contains the minimum initialisation test and measurement require-
ments and severities which a branching device shall satisfy in order to be categorised as
meeting the IEC standard. The requirements cover balanced non-connectorised single-mode
1×N and 2×N non-wavelength-selective branching devices for use in an IEC Category U
environment (N is the number of output ports). The specifications of unbalanced branching
devices are limited to 1×2 and 2×2 devices because they are the most commonly used.
2 Normative references
The following normative documents contain provisions which, through reference in this
text, constitute provisions of this part of IEC 61753. For dated references, subsequent
amendments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this part of IEC 61753 are encouraged to investigate the possibility of
applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of ISO
and IEC maintain registers of currently valid International Standards.
IEC 60793-1-1:1995, Optical fibres – Part 1: Generic specification – Section 1: General
IEC 61300 (all parts), Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures
IEC 61300-2-1:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-1: Tests – Vibration (sinusoidal)
IEC 61300-2-4:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-4: Tests – Fibre/cable retention
IEC 61300-2-5:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-5: Tests – Torsion/twist

IEC 61300-2-12:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-12: Tests – Impact
IEC 61300-2-14:1997, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-14: Tests – Maximum input power
IEC 61300-2-17:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-17: Tests – Cold
IEC 61300-2-18:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-18: Tests – Dry heat – High temperature
endurance
IEC 61300-2-19:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-19: Tests – Damp heat (steady state)

– 6 – 61753-2-3 © IEC:2001(E)
IEC 61300-2-22:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-22: Tests – Change of temperature

IEC 61300-2-26:1995, Fibre optic interconnecting devices and passive components – Basic

test and measurement procedures – Part 2-26: Tests – Salt mist

IEC 61300-2-27:1995, Fibre optic interconnecting devices and passive components – Basic

test and measurement procedures – Part 2-27: Tests – Dust – Laminar flow

IEC 61300-2-28:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-28: Tests – Industrial atmosphere (sulphur

dioxide)
IEC 61300-2-45:1999, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 2-45: Tests – Durability test by water immersion
IEC 61300-3-2:1999, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 3-2: Examinations and measurements – Polarization
dependence of attenuation in a single-mode fibre optic device
IEC 61300-3-3:1997, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 3-3: Examinations and measurements – Monitoring
change in attenuation and in return loss (multiple paths)
IEC 61300-3-5:2001, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 3-5: Examinations and measurements – Wavelength
dependence of attenuation
IEC 61300-3-6:1997, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-20:2001, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 3-20: Examinations and measurements – Directivity
of fibre optic branching devices
IEC 61753-2-1:2000, Fibre optic interconnecting devices and passive components
performance standard – Part 2-1: Fibre optic connectors terminated on single-mode fibre for
category U – Uncontrolled environment
3 Test
All test methods are in accordance with the IEC 61300 series of standards.

The samples shall be terminated onto single-mode fibres according to Type B1.1 of
IEC 60793-1-1 in either coated fibres (primary and secondary) or reinforced cable format.
Each test defines the number of sampl
...