IEC 61753-052-3:2016

Fibre optic interconnecting devices and passive components - Performance standard - Part 052-3: Single-mode fibre non-connectorized fixed attenuator - Category U in uncontrolled environment

IEC 61753-052-3:2016 contains the minimum initial test and measurement requirements and severities which a fibre optic attenuator satisfies in order to be categorised as meeting the requirements of single-mode fibre non-connectorized fixed attenuator devices used in uncontrolled environments. IEC 60869-1 contains the generic specification of the optical attenuator. Optical performances specified in this document relate only to non-connectorized configurations optical attenuators. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition: reconsideration of performance requirements. Keywords: non-connectorized fixed attenuator devices, Category U in uncontrolled environments

Dispositifs d’interconnexion et composants passifs fibroniques - Norme de performance - Partie 052-3: Affaiblisseur fixe non connectorisé à fibres unimodales - Catégorie U dans un environnement non contrôlé

IEC 61753-052-3:2016 contient les exigences de mesure et d'essai initiales minimales et les sévérités auxquelles satisfait un affaiblisseur fibronique pour être classé comme conforme aux exigences d'un affaiblisseur fixe non connectorisé à fibres unimodales destiné à être utilisé dans des environnements non contrôlés. L'IEC 60869-1 contient la spécification générique de l'affaiblisseur optique. Les performances optiques spécifiées dans le présent document concernent uniquement des affaiblisseurs optiques non connectorisés. Cette deuxième édition annule et remplace la première édition parue en 2001. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente: révision des exigences de performance. Mots clés : affaiblisseurs optiques non connectorisés, Catégorie U dans un environnement non contrôlé

General Information

• Status: Published
• Publication Date: 27-Jul-2016
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Drafting Committee: WG 7 - TC 86/SC 86B/WG 7
• Current Stage: PPUB - Publication issued
• Start Date: 28-Jul-2016
• Completion Date: 15-Sep-2016

Relations

• Revises: IEC 61753-052-3:2001 - Fibre optic interconnecting devices and passive components performance standard - Part 052-3: Single-mode fibre, pigtailed-style fixed attenuators for category U - Uncontrolled environment
• Effective Date: 05-Sep-2023

Overview

IEC 61753-052-3:2016 is an IEC performance standard that defines the minimum initial test and measurement requirements for single‑mode fibre non‑connectorized fixed attenuator devices intended for Category U (uncontrolled) environments. This second edition (2016) revises performance requirements from the 2001 edition and applies specifically to non‑connectorized attenuator configurations - i.e., attenuators permanently terminated to fibre rather than connectorized patchcords.

Key topics and technical requirements

The standard specifies test methods, severities and acceptance criteria based on IEC’s basic test and measurement series (IEC 61300). Key technical requirements include:

• Attenuation

  • Operating wavelength ranges: 1260–1360 nm and 1460–1625 nm (measurements use tunable narrowband, non‑polarized sources).
  • Tolerance for nominal insertion loss ≤ 5 dB: ±0.5 dB; for > 5 dB: ±10%.
  • Total measurement uncertainty target: ≤ ±0.1 dB.

• Return loss

  • Measurement method OCWR (IEC 61300‑3‑7) with required ≥ 50 dB (Grade U) at 1310 nm, 1550 nm and/or 1625 nm. Measurements are performed twice (reversed sample).

• Polarization dependent loss (PDL)

  • Limit: ≤ 0.3 dB at 1550 nm (measure per IEC 61300‑3‑2).

• High optical power

  • Endurance test at 60 °C with defined power increments and monitoring of insertion loss and return loss (IEC 61300‑2‑14 / IEC 61300‑3‑3).

• Mechanical and environmental tests

  • Vibration (sinusoidal), cold exposure (‑25 °C for 96 h), plus tests for torsion, shock, damp heat, dust, salt mist and strain relief as referenced to IEC 61300 parts.

• Sample preparation

  • Samples shall be terminated onto single‑mode fibres per IEC 60793‑2‑50 types B1.1, B1.3 or B6 and cable formats per IEC 60794‑2‑50.

Applications and users

IEC 61753-052-3 is relevant to:

• Manufacturers of fixed fibre attenuators for product design, validation and quality control.
• Test laboratories performing type and batch verification for uncontrolled (field) installations.
• System integrators, network operators and procurement teams who need to specify attenuator performance and acceptance criteria for passive optical links deployed in uncontrolled environments (outdoor enclosures, field panels, splice assemblies).

Typical applications include fixed attenuation in single‑mode fibre links where devices are permanently terminated to fibre and exposed to uncontrolled environmental conditions.

Related standards

• IEC 60869‑1 - Generic specification for optical attenuators
• IEC 61300 series - Basic test and measurement procedures (vibration, PDL, return loss, transient loss, etc.)
• IEC 60793‑2‑50, IEC 60794‑2‑50 - Fibre and cable product/termination specifications

Keywords: non‑connectorized fixed attenuator devices, Category U in uncontrolled environments, IEC 61753‑052‑3, single‑mode fibre attenuator, attenuation tolerance, return loss, PDL.

Standards Content (Sample)

IEC 61753-052-3 ®
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 052-3: Single-mode fibre non-connectorized fixed attenuator – Category U in
uncontrolled environment
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.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland 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.

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IEC 61753-052-3 ®
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
Fibre optic interconnecting devices and passive components – Performance

standard –
Part 052-3: Single-mode fibre non-connectorized fixed attenuator – Category U in

uncontrolled environment
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-3548-5

– 2 – IEC 61753-052-3:2016 © IEC 2016
CONTENTS
FOREWORD .3
1 Scope .5
2 Normative references .5
3 Test .6
4 Test report .6
5 Performance requirements .6
5.1 Sample size, sequencing and grouping.6
5.2 Dimensions .6
5.3 Test details and requirements .7
Annexe A (normative) Test sequencing for single-mode non-connectorized fixed
attenuators, category U . 12
Bibliography . 13

Table 1 – Test details and requirements .7
Table A.1 – Test sequence for single-mode non-connectorized fixed attenuators,
category U . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 052-3: Single-mode fibre non-connectorized fixed
attenuator – Category U in uncontrolled 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 61753-052-3 has been prepared by subcommittee SC86B: Fibre
optic interconnecting devices and passive components, of IEC technical committee 86: Fibre
optics.
This second edition cancels and replaces the first edition published in 2001. This edition
constitutes a technical revision.
This edition includes the following significant technical change with respect to the previous
edition:
• reconsideration of performance requirements.

– 4 – IEC 61753-052-3:2016 © IEC 2016
The text of this standard is based on the following documents:
FDIS Report on voting
86B/3994/FDIS 86B/4009/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.
A list of all parts in the IEC 61753 series, published under the general title Fibre optic
interconnecting devices and passive components – Performance standard, can be found on
the IEC website.
Future standards in this series will carry the new general title as cited above. Titles of
existing standards in this series will be updated at the time of the next edition.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.

FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 052-3: Single-mode fibre non-connectorized fixed
attenuator – Category U in uncontrolled environment

1 Scope
This part of IEC 61753 contains the minimum initial test and measurement requirements and
severities which a fibre optic attenuator satisfies in order to be categorised as meeting the
requirements of single-mode fibre non-connectorized fixed attenuator devices used in
uncontrolled environments. IEC 60869-1 contains the generic specification of the optical
attenuator.
Optical performances specified in this document relate only to non-connectorized
configurations optical attenuators.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document
and are indispensable for its application. 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 specifications
for class B single mode fibres
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 61300-2-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-1: Tests – Vibration (sinusoidal)
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
IEC 61300-2-9, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-9: Tests – Shock
IEC 61300-2-14, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-14: Tests – High optical power
IEC 61300-2-17, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-17: Tests – Cold
IEC 61300-2-18, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-18: Tests – Dry heat – High temperature endurance

– 6 – IEC 61753-052-3:2016 © IEC 2016
IEC 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-22: Tests – Change of temperature
IEC 61300-2-26, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-26: Tests – Salt mist
IEC 61300-2-27, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-27: Tests – Dust – Laminar flow
IEC 61300-2-42, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-42: Tests – Static side load for strain relief
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 61300-2-46, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-46: Tests – Damp heat, cyclic
IEC 61300-3-2, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-2: Examination and measurements – Polarization
dependent loss in a single-mode fibre optic device
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 61300-3-7, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-7: Examinations and measurements – Wavelength
dependen
...

IEC 61753-052-3 ®
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 052-3: Single-mode fibre non-connectorized fixed attenuator – Category U in
uncontrolled environment
Dispositifs d'interconnexion et composants passifs fibroniques – Norme de
performance –
Partie 052-3: Affaiblisseur fixe non connectorisé à fibres unimodales – Catégorie
U dans un environnement non contrôlé
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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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 corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
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The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

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IEC 61753-052-3 ®
Edition 2.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Performance

standard –
Part 052-3: Single-mode fibre non-connectorized fixed attenuator – Category U in

uncontrolled environment
Dispositifs d'interconnexion et composants passifs fibroniques – Norme de

performance –
Partie 052-3: Affaiblisseur fixe non connectorisé à fibres unimodales – Catégorie

U dans un environnement non contrôlé

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-5269-7

– 2 – IEC 61753-052-3:2016 © IEC 2016
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Test . 6
4 Test report . 6
5 Performance requirements . 6
5.1 Sample size, sequencing and grouping . 6
5.2 Dimensions . 6
5.3 Test details and requirements . 7
Annexe A (normative) Test sequencing for single-mode non-connectorized fixed
attenuators, category U . 12
Bibliography . 13

Table 1 – Test details and requirements . 7
Table A.1 – Test sequence for single-mode non-connectorized fixed attenuators,
category U . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 052-3: Single-mode fibre non-connectorized fixed attenuator –
Category U in uncontrolled 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 61753-052-3 has been prepared by subcommittee SC86B: Fibre
optic interconnecting devices and passive components, of IEC technical committee 86: Fibre
optics.
This bilingual version (2018-01) corresponds to the monolingual English version, published in
2016-07.
This second edition cancels and replaces the first edition published in 2001. This edition
constitutes a technical revision.
This edition includes the following significant technical change with respect to the previous
edition:
• reconsideration of performance requirements.

– 4 – IEC 61753-052-3:2016 © IEC 2016
The text of this standard is based on the following documents:
FDIS Report on voting
86B/3994/FDIS 86B/4009/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.
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 in the IEC 61753 series, published under the general title Fibre optic
interconnecting devices and passive components – Performance standard, can be found on the
IEC website.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The committee has decided that the contents of this publication will remain unchanged until the
stability date indicated on the IEC website 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.
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 052-3: Single-mode fibre non-connectorized fixed attenuator –
Category U in uncontrolled environment

1 Scope
This part of IEC 61753 contains the minimum initial test and measurement requirements and
severities which a fibre optic attenuator satisfies in order to be categorised as meeting the
requirements of single-mode fibre non-connectorized fixed attenuator devices used in
uncontrolled environments. IEC 60869-1 contains the generic specification of the optical
attenuator.
Optical performances specified in this document relate only to non-connectorized
configurations optical attenuators.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. 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 specifications for
class B single mode fibres
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 61300-2-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-1: Tests – Vibration (sinusoidal)
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
IEC 61300-2-9, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-9: Tests – Shock
IEC 61300-2-14, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-14: Tests – High optical power
IEC 61300-2-17, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-17: Tests – Cold
IEC 61300-2-18, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-18: Tests – Dry heat – High temperature endurance

– 6 – IEC 61753-052-3:2016 © IEC 2016
IEC 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-22: Tests – Change of temperature
IEC 61300-2-26, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-26: Tests – Salt mist
IEC 61300-2-27, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-27: Tests – Dust – Laminar flow
IEC 61300-2-42, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-42: Tests – Static side load for strain relief
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 61300-2-46, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-46: Tests – Damp heat, cyclic
IEC 61300-3-2, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-2: Examination and measurements – Polarization dependent
loss in a single-mode fibre optic device
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 61300-3-7, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-7: Examinations and measurements – Wavelength
dependence of attenuation and return loss of single mode components
IEC 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-28: Examinations and measurements – Transient loss
3 Test
All test methods are in accordance with the IEC 61300 series. Tests validate performance over
the required operating wavelength and power range. The samples shall be terminated onto
single-mode fibres as per IEC 60793-2-50, type B1.1 or B1.3 or B6 in either coated fibres
(primary and secondary) or reinforced cable format as per IEC 60794-2-50.
4 Test report
Fully documented test reports and supporting evidence shall be prepared and shall be
available for inspection as evidence that the tests have been carried out and complied with.
5 Performance requirements
5.1 Sample size, sequencing and grouping
The sample size to be used for the tests shall be as defined in Annex A.
5.2 Dimensions
Dimensions shall comply with those given in appropriate manufacturer's drawings.

5.3 Test details and requirements
Table 1 defines the performance requirements and test details for single-mode non-
connectorized fixed attenuators, category U.
Table 1 – Test details and requirements
No. Tests Requirements Details
1 Attenuation Operating wavelength range: Method: Method B2.1
1 260 nm to 1 360 nm
IEC 61300-3-7
Launch patchcord
≥ 2 m. Only the fundamental mode
and/or 1 460 nm to
length:
shall propagate at the limiter interface
1 625 nm.
and at the detector.
For nominal values ≤ 5 dB,
Launch The wavelength of the source shall be
the tolerance shall be
conditions: longer than cut-off wavelength of the
≤ ± 0,5 dB around the
fibre.
nominal insertion loss value.
Optical source Tunable narrowband non polarized
For nominal values > 5 dB,
wavelength: source. 1 260 nm to 1 360 nm and
the tolerance shall be
1 460 to 1 660 nm.
≤ ± 10 % around the
nominal insertion loss value.
Source power
Within ± 0,05 dB over the measuring
stability:
period or at least 1 h.
Total uncertainty: ≤ ± 0,1 dB
2 Return loss Method: Measurement method 1 OCWR
≥ 50 dB Grade U
IEC 61300-3-7 Optical source
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
wavelength:
and/or 1 625 nm ± 10 nm
Test every sample with the three
wavelengths.
Other This test shall be performed twice,
requirements: reversing the sample. Both
measurements shall be within the
specified limits.
Total uncertainty: ≤ ± 1 dB
3 Polarization
≤ 0,3 dB at 1 550 nm
dependent loss
The samples shall be Optical source
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
IEC 61300-3-2
terminated onto single-mode Wavelength:
and/or 1 625 nm ± 10 nm
fibres as per
Total uncertainty: ≤ ± 0,05 dB over the dynamic range to
IEC 60793-2-50,
be measured
4 High optical Before, during and after the
power test, the insertion loss shall
Test temperature: 60 °C ± 2 °C
meet the requirements of
IEC 61300-2-14
test No. 1.
Optical source
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
wavelength:
Before, during and after the and/or 1 625 nm ± 10 nm
test, the return loss shall
Test duration: 1 h at each power level
meet the requirements of
test No. 2.
Power increments:
For nominal insertion loss ≤ 5 dB: start
at 0 dBm and go up to maximum
During the test, the change
allowed power input in 100 mW
in insertion loss and return
increments of CW source input
loss shall be measured by
test method IEC 61300-3-3
For nominal insertion loss > 5 dB:
10 mW continuous power increments
The above increments are applied up
to the maximum allowed power input
of 100 mW
– 8 – IEC 61753-052-3:2016 © IEC 2016
No. Tests Requirements Details
5 Vibration Before and after the test, Metohd: During the test, the change in insertion
(sinusoidal) the insertion loss shall loss shall be measured by transient
meet the requirements of loss test method IEC 61300-3-28.
IEC 61300-2-1
test No. 1.
Frequency range: 10 Hz to 55 Hz
Before and after the test,
Constant vibration 0,75 mm
the return loss shall meet
amplitude:
the requirements of test
No. 2.
Number of cycles: 15
During the test, the change
Number of axes: 3 orthogonal
in insertion loss shall be
≤ ± 0,5 dB.
Sweep rate: 1 octave/min
Optical source
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
wavelength:
and/or 1 625 nm ± 10 nm
Specimen Yes
optically
functioning:
6 Cold During the test, the Method: During the test, the change in
maximum allowed change insertion loss shall be measured by
IEC 61300-2-17
in insertion loss is: test method IEC 61300-3-3.
≤ ± 0,5 dB for attenuator Temperature:
–25 °C ± 2 °C
≤ 5 dB.
Duration of the 96 h
≤ ± 10 % for attenuators > exposure:
5 dB.
Optical source
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
Before and after the test,
wavelength:
and/or 1 625 nm ± 10 nm
the insertion loss
Before and after the test, the samples
requirements of test No. 1
will be measured with three
shall be met.
wavelengths. During the test, the
Before and after the test,
samples will be measured with one
the return loss
wavelength.
requirement of test No. 2
shall be met. Maximum 1 h
sampling interval
during the test:
Specimen Yes
optically
functioning:
7 Dry heat – High During the test, the Method: During the test, the change in
temperature maximum allowed change insertion loss shall be measured by
endurance in insertion loss is: test method IEC 61300-3-3.
IEC 61300-2-18
≤ ± 0,5 dB for attenuator Temperature: + 70 °C ± 2 °C
≤ 5 dB
Duration of the 96 h
≤ ± 10% for attenuators
exposure:
> 5 dB
Optical source 1 310 nm ± 10 nm, 1 550 nm ± 10 nm
Before and after the test,
wavelength:
and/or 1 625 nm ± 10 nm
the insertion loss
Before and after the test, the samples
requirements of test No. 1
will be measured with three
shall be met
wavelengths. During the test, the
Before and after the test,
samples will be measured with one
the return loss
wavelength.
requirement of test No. 2
Maximum 1 h
shall be met
sampling interval
during the test:
Specimen Yes
optically
functioning:
No. Tests Requirements Details
8 Damp heat Before, during and after Method: During the test the change in
(cyclic) the test the insertion loss insertion loss shall be measured by
requirements of test No. 1 test method IEC 61300-3-3.
IEC 61300-2-46
shall be met
High
+ 70 °C ± 2 °C
Before and after the test
temperature:
the return loss
Low temperature:
+ 25 °C ± 2 °C
requirement of test No. 2
shall be met
Humidity:
> 95 % RH ± 2 % RH
During the test the change
Number of 4
in Insertion Loss shall be
cycles:
measured by test method
IEC 61300-3-3
Duration of each 24 h
cycle:
Optical source
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
wavelength:
and/or 1 625 nm ± 10 nm
Before and after the test, the samples
will be measured with three
wavelengths. During the test, the
samples will be measured with one
wavelength.
Maximum 1 h
sampling interval
during the test:
Specimen Yes
optically
functioning:
9 Change of Before, during and after Method: Test Nb
temperature the test, the insertion loss
During the test, the change in
requirements of test No 1
IEC 61300-2-22 insertion loss shall be measured by
shall be met.
test method IEC 61300-3-3.
Before and after the test,
High + 70 °C ± 2 °C
the return loss
temperature:
requirement of test No 2
shall be met.
Low temperature:
– 25 °C ± 2 °C
Number of 12
cycles:
Rate of 1 °C/min
temperature
change:
Duration at 1 h
extreme
temperatures:
Optical source
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
wavelength:
and/or 1 625 nm ± 10 nm
Before and after the test, the samples
will be measured with three
wavelengths. During the test, the
samples will be measured with one
wavelength.
Maximum 15 min
sampling interval
during the test:
Specimen Yes
optically
functioning:
– 10 – IEC 61753-052-3:2016 © IEC 2016
No. Tests Requirements Details
10 Dust Before and after the test,
the insertion loss shall
IEC 61300-2-27 Temperature:
+ 35 °C ± 2 °C
meet the requirements of
test No. 1.
Relative
+ 60 % RH ± 2 % RH
humidity:
Before and after the test,
the return loss shall meet
Dust type: Talc
the requirements of
test No. 2.
Dust particle < 150 µm
diameter:
Before and after the test.
Specimen tested in mated
3 3
Dust 10,6 g/m ± 7,1 g/m
position.
concentration:
No significant difference
either in the visual aspect
or in the strength coupling
mechanism shall be
noticed
Test duration: 10 min
Particle size
d < 150 µm
Specimen No
optically
functioning:
11 Salt mist Before and after the test,
the insertion loss shall
IEC 61300-2-26 Temperature:
+ 35 °C ± 2 °C
meet the requirements of
test No. 1.
Salt solution 5 % ± 1 %
(NaCl)
Before and after the test,
concentration:
the return loss shall meet
the requirements of
pH: Between 6,5 and 7,2
test No. 2.
Test duration: 96 h
Before and after the test.
Specimen tested in mated
Specimen No
position.
optically
functioning:
12 Shock Before and after the test,
the insertion loss shall
IEC 61300-2-9
Acceleration 5 000 m/s
meet the requirements of
force:
test No. 1.
Time: 1ms duration, half sine pulse
Before and after the test,
the return loss shall meet
No. of shocks: 3 axes in 2 directions, 2 shocks per
the requirements of
axis, 12 shocks total
test No. 2.
Specimen No
optically
functioning:
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
Optical source
and/or 1 625 nm ± 10 nm
wavelength:
13 Optical fibre Before and after the test,
cable flexing the insertion loss shall
Magnitude of the 5 000 m/s2 for reinforced cable
meet the requirements of
IEC 61300-2-44
load:
test No. 1.
Angle of ± 90°
Before and after the test,
deflection per
the return loss shall meet
cycle:
the requirements of
test No. 2.
Number of 30
cycles:
Specimen No
optically
functioning:
Method of The sample shall be rigidly mounted
mounting: such that the load is only applied to
the fibre/cable.
No. Tests Requirements Details
14 Fibre/cable Before and after the test, During the test, the change in
retention the insertion loss shall insertion loss shall be measured by
meet the requirements of test method IEC 61300-3-3.
IEC 61300-2-4
test No. 1.
Magnitude of the
10 N ± 1 N at 5 N/s for reinforced
Before and after the test,
load:
cables
the return loss shall meet
5,0 N ± 0,5 N at 0,5 N/s for
the requirements of
secondary coated fibres
test No. 2.
During the test, the 2,0 N ± 0,2 N at 0,5 N/s for primary
coated fibres
change in insertion loss
shall be ± 0,5 dB.
Load application 0,3 m from point where the
point: fibre/cable exits from the specimen.
Duration of the 120 s duration at 10 N
load:
60 s duration at 2 N or 5 N
Method of The sample shall be rigidly mounted
mounting: such that the load is only applied to
the fibre/cable retention mechanism.
Specimen Yes
optically
functioning:
Optical source
1 310 nm ± 10 nm, 1 550 nm ± 10 nm
wavelength:
and/or 1 625 nm ± 10 nm
15 Torsion/twist Before and after the test,
the insertion loss shall
IEC 61300-2-5
Magnitude of the 5,0 N at 0,1 N/s for reinforced cables
meet the requirements of
load:
testNo. 1.
2,0 N at 0,1 N/s for primary and
secondary coated fibres
Before and after the test,
the return loss shall meet
Rate of load 0,1 N/s
the requirements of
application:
test No. 2.
Number of 10 cycles
cycles:
± 180° angular movement
Specimen No
optically
functioning:
16 Static side Before and after the test,
a
load the insertion loss shall
Magnitude of the 1 N for 1 h for reinforced cable
meet the requirements of
IEC 61300-2-42 load:
test 1.
0,2 N for 5 min for secondary coated
fibres
Before and after the test,
the return loss shall meet
the requirements of test 2.
Load application 0,3 m from the end of the device and
point: two mutually perpendicular directions
as permitted by the product design.
Specimen No
optically
functioning:
a
Static side load shall be applied in two mutually perpendicular directions as permitted by the product design.
For example, a product with a base plate extending beyond the fibre exit may prohibit loading in that
direction.
– 12 – IEC 61753-052-3:2016 © IEC 2016
Annexe A
(normative)
Test sequencing for single-mode non-connectorized
fixed attenuators, category U
IEC 60068-1 describes the background for test sequencing. Test sequencing is based on the
premise that the effect one test parameter has on a specimen will depend on the previous test
conditions to which the specimen has been exposed. Therefore, it is necessary to conduct the
tests in a specific order.
The choice of the sequence of tests is a function of the intended objectives and depends upon
a number of considerations. It is recognized that it is difficult to provide a standardiz
...