EN IEC 61300-3-53:2021

SLOVENSKI STANDARD
01-april-2021
Nadomešča:
SIST EN 61300-3-53:2015
Optični spojni elementi in pasivne komponente - Osnovni preskusni in merilni
postopki - 3-53. del: Preiskave in meritve - Merilna metoda obdanega koničastega
pretoka (EAF), osnovana na dvodimenzionalnih podatkih daljnega polja iz
mnogorodovnega valovoda (vključno z optičnim vlaknom) (IEC 61300-3-53:2020)
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-53: Examinations and Measurements - Encircled
angular flux (EAF) measurement method based on two-dimensional far field data from
multimode waveguide (including fibre) (IEC 61300-3-53:2020)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und
Messverfahren - Teil 3-53: Untersuchungen und Messungen - Verfahren zur Messung
des winkelabhängigen begrenzten Lichtstroms (EAF) basierend auf den
zweidimensionalen Fernfelddaten eines Mehrmoden-Wellenleiters (einschließlich -Faser)
(IEC 61300-3-53:2020)
Dispositifs d'interconnexion et composants passifs fibroniques - Procédures
fondamentales d'essais et de mesures - Partie 3-53: Examens et mesures - Méthode de
mesure du flux angulaire inscrit (EAF) fondée sur les données bidimensionnelles de
champ lointain d’un guide d’ondes multimodal (fibre incluse) (IEC 61300-3-53:2020)
Ta slovenski standard je istoveten z: EN IEC 61300-3-53:2021
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61300-3-53

NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 33.180.20 Supersedes EN 61300-3-53:2015 and all of its
amendments and corrigenda (if any)
English Version
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures - Part 3-53:
Examinations and measurements - Encircled angular flux (EAF)
measurement method based on two-dimensional far field data
from multimode waveguide (including fibre)
(IEC 61300-3-53:2020)
Dispositifs d'interconnexion et composants passifs Lichtwellenleiter - Verbindungselemente und passive
fibroniques - Procédures fondamentales d'essais et de Bauteile - Grundlegende Prüf- und Messverfahren - Teil 3-
mesures - Partie 3-53: Examens et mesures - Méthode de 53: Untersuchungen und Messungen - Verfahren zur
mesure du flux angulaire inscrit (EAF) fondée sur les Messung des winkelabhängigen begrenzten Lichtstroms
données bidimensionnelles de champ lointain d'un guide (EAF) basierend auf den zweidimensionalen Fernfelddaten
d'ondes multimodal (fibre incluse) eines Mehrmoden-Wellenleiters (einschließlich -Faser)
(IEC 61300-3-53:2020) (IEC 61300-3-53:2020)
This European Standard was approved by CENELEC on 2021-01-19. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61300-3-53:2021 E

European foreword
The text of document 86B/4343/FDIS, future edition 2 of IEC 61300-3-53, prepared by SC 86B "Fibre
optic interconnecting devices and passive components" of IEC/TC 86 "Fibre optics" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61300-3-53:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-10-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-01-19
document have to be withdrawn
This document supersedes EN 61300-3-53:2015 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 61300-3-53:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61745 NOTE Harmonized as EN 61745
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60793-2-10 - Optical fibres - Part 2-10: Product EN IEC 60793-2-10 -
specifications - Sectional specification for
category A1 multimode fibres
IEC 60793-2-30 - Optical fibres - Part 2-30: Product EN 60793-2-30 -
specifications - Sectional specification for
category A3 multimode fibres
IEC 60793-2-40 - Optical fibres - Part 2-40: Product EN 60793-2-40 -
specifications - Sectional specification for
category A4 multimode fibres
IEC 60825-1 - Safety of laser products - Part 1: EN 60825-1 -
Equipment classification and requirements
IEC 61300-1 2016 Fibre optic interconnecting devices and EN 61300-1 2016
passive components - Basic test and
measurement procedures - Part 1: General
and guidance
IEC 61300-3-53 ®
Edition 2.0 2020-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures
Part 3-53: Examinations and measurements – Encircled angular flux (EAF)

measurement method based on two-dimensional far field data from multimode

waveguide (including fibre)
Dispositifs d'interconnexion et composants passifs fibroniques – Procédures

fondamentales d'essais et de mesures –

Partie 3-53: Examens et mesures – Méthode de mesure du flux angulaire inscrit

(EAF) fondée sur les données bidimensionnelles de champ lointain d’un guide

d’ondes multimodal (fibre incluse)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-9136-8

– 2 – IEC 61300-3-53:2020 © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Measurement conditions . 8
5 Apparatus . 8
5.1 General . 8
5.2 Measurement method 1: fθ lens imaging . 8
5.2.1 General . 8
5.2.2 Micro-positioner . 8
5.2.3 FFP optical system . 9
5.2.4 Imaging device . 9
5.2.5 Computer (EAF analyser module) . 9
5.3 Measurement method 2: direct imaging . 9
5.3.1 General . 9
5.3.2 Micro-positioner . 9
5.3.3 Imaging device . 10
5.3.4 Computer, position controller and image acquisition . 10
6 Sampling and specimens . 10
7 Geometric calibration . 10
7.1 General . 10
7.2 Light source . 11
7.3 Procedure . 11
8 Measurement procedure . 11
8.1 Safety . 11
8.2 Far field image acquisition . 12
8.2.1 General . 12
8.2.2 Waveguide end-face alignment . 12
8.2.3 Light source image acquisition . 12
8.3 Removal of background noise . 13
8.4 Centre determination . 13
8.4.1 General . 13
8.4.2 Method A: Optical centre determination . 13
8.4.3 Method B: Mechanical centre determination . 14
8.5 Computation of encircled angular flux . 15
9 Results . 16
9.1 Information available with each measurement . 16
9.2 Information available upon request . 17
10 Details to be specified . 17
Annex A (informative) System recommendations – Measurement method 1: far field
optical system . 18
A.1 General . 18
A.2 Recommendations . 18
Annex B (informative) System recommendations – Measurement method 2: direct
imaging . 19

IEC 61300-3-53:2020 © IEC 2020 – 3 –
B.1 General . 19
B.2 Recommendations . 19
Annex C (informative) Shading effect of CCD devices: incident ray angular sensitivity . 20
C.1 General . 20
C.2 Scheme of shading and example of the characteristics . 20
Annex D (normative) Launch optics for the EAF template compliance test . 22
D.1 General . 22
D.2 Setup . 22
Bibliography . 23

Figure 1 – Apparatus configuration of measurement method 1: fθ lens imaging . 8
Figure 2 – Far field optical system diagram . 9
Figure 3 – Apparatus configuration of measurement method 2: direct imaging . 10
Figure 4 – Calibration apparatus example . 11
Figure 5 – Acquired far field image . 12
Figure 6 – Acquired far field image with false colour . 13
Figure 7 – Optical centre determination . 14
Figure 8 – Transformation of x-y to polar coordinates on the image sensor plane . 15
Figure 9 – Typical encircled angular flux chart . 16
Figure A.1 – An example of an optical system using an fθ lens . 18
Figure C.1 – Scheme of shading effect . 20
Figure C.2 – Example of shading characteristics . 21
Figure D.1 – Schematic view of the setup for the EAF compliance test . 22

– 4 – IEC 61300-3-53:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES

Part 3-53: Examinations and measurements – Encircled angular
flux (EAF) measurement method based on two-dimensional
far field data from multimode waveguide (including fibre)

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 61300-3-53 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86:Fibre optics.
This second edition cancels and replaces the first edition in 2015. This edition constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the scope of the applicable wave guides, and graded index multimode optical wave guide
and fibre have been included;
b) the structure of 5.3 has been rearranged;
c) Annex C and Annex D have been added.

IEC 61300-3-53:2020 © IEC 2020 – 5 –
The text of this International Standard is based on the following documents:
FDIS Report on voting
86B/4343/FDIS 86B/4373/RVD
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61300, published under the general title Fibre optic interconnecting
devices and passive components – Basic test and measurement procedures, can be found on
the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this 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.

– 6 – IEC 61300-3-53:2020 © IEC 2020
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES

Part 3-53: Examinations and measurements – Encircled angular
flux (EAF) measurement method based on two-dimensional
far field data from multimode waveguide (including fibre)

1 Scope
This part of IEC 61300 defines the encircled angular flux measurement of multimode waveguide
light sources, in which most of the transverse modes are excited. The term "waveguide" is
understood to include both channel waveguides and optical fibres but not slab waveguides.
The applicable fibre types are the followings:
• A1 specified in IEC 60793-2-10;
• A3 specified in IEC 60793-2-30;
• A4 specified in IEC 60793-2-40.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 60793-2-10, Optical fibres – Part 2-10: Product specifications – Sectional specification for
category A1 multimode fibres
IEC 60793-2-30, Optical fibres – Part 2-30: Product specifications – Sectional specification for
category A3 multimode fibres
IEC 60793
...