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 is available as IEC 61300-3-53:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61300-3-53:2020 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.
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:
- the scope of the applicable wave guides, and graded index multimode optical wave guide and fibre have been included;
- the structure of 5.3 has been rearranged;
- Annex C and Annex D have been added.
The contents of the corrigendum of June 2023 have been included in this copy.

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 est disponible sous forme de IEC 61300-3-53:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente .
L'IEC 61300-3-53:2020 définit la mesure du flux angulaire inscrit de sources de rayonnement lumineux dotées d’un guide d’ondes multimodal, pour lequel la plupart des modes transversaux sont excités. On considère que le terme "guide d’ondes" inclut à la fois des guides d’ondes de canal et des fibres optiques, mais pas des guides d’ondes rectangulaires rigides. Les types de fibres applicables sont les suivants:
- A1 spécifié dans l’IEC 60793-2-10;
- A3 spécifié dans l’IEC 60793-2-30;
- A4 spécifié dans l’IEC 60793-2-40.
Cette deuxième édition annule et remplace la première édition parue en 2015. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- la portée des guides d’ondes applicables, ainsi que la fibre et le guide d’ondes optiques multimodaux à gradient d’indice ont été inclus;
- restructuration de 5.3;
- ajout de l'Annexe C et de l'Annexe D.
Le contenu du corrigendum de juin 2023 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 14-Dec-2020
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Drafting Committee: WG 4 - TC 86/SC 86B/WG 4
• Current Stage: PPUB - Publication issued
• Start Date: 18-Dec-2020
• Completion Date: 15-Dec-2020

Relations

• Corrected By: IEC 61300-3-53:2020/COR1:2023 - Corrigendum 1 - 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)
• Effective Date: 05-Sep-2023
• Revises: IEC 61300-3-53:2015 - 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 step index multimode waveguide (including fibre)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61300-3-53 ®
Edition 2.0 2020-12
REDLINE VERSION
INTERNATIONAL
STANDARD
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 step index
multimode waveguide (including fibre)

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 [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

need further assistance, please contact the Customer Service

Centre: [e-mail].
IEC 61300-3-53 ®
Edition 2.0 2020-12
REDLINE VERSION
INTERNATIONAL
STANDARD
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 step index

multimode waveguide (including fibre)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-9211-2

– 2 – IEC 61300-3-53:2020 RLV © 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 . 9
5.2.3 FFP optical system . 9
5.2.4 Camera Imaging device . 9
5.2.5 Computer (EAF analyser module) . 10
5.2.6 Calibration light source .
5.3 Measurement method 2: direct imaging . 10
5.3.1 General . 10
5.3.2 Micro-positioner . 10
5.3.3 Optical power .
5.3.4 Alignment .
5.3.5 Detector .
5.3.6 Single-mode fibre .
5.3.7 Imaging device .
5.3.3 Imaging device . 12
5.3.4 Computer, position controller and image acquisition . 12
6 Sampling and specimens . 13
7 Geometric calibration . 13
7.1 General . 13
7.2 Light source . 13
7.3 Procedure . 13
8 Measurement procedure . 14
8.1 Safety . 14
8.2 Far field image acquisition . 14
8.2.1 General . 14
8.2.2 Waveguide end-face alignment . 14
8.2.3 Light source image acquisition . 15
8.3 Removal of background noise . 15
8.4 Centre determination . 16
8.4.1 General . 16
8.4.2 Method A: Optical centre determination . 16
8.4.3 Method B: Mechanical centre determination . 16
8.5 Computation of encircled angular flux . 17
9 Results . 19
9.1 Information available with each measurement . 19
9.2 Information available upon request . 19
10 Details to be specified . 20

Annex A (informative) System requirements recommendations – Measurement
method 1: far field optical system . 21
A.1 General . 21
A.2 Requirements Recommendations . 21
Annex B (informative) System requirements recommendations – Measurement
method 2: direct imaging . 22
B.1 General . 22
B.2 Requirements Recommendations . 22
Annex C (informative) Shading effect of CCD devices: incident ray angular sensitivity . 23
C.1 General . 23
C.2 Scheme of shading and example of the characteristics . 23
Annex D (normative) Launch optics for the EAF template compliance test . 25
D.1 General . 25
D.2 Setup . 25
Bibliography . 26

Figure 1 – Apparatus configuration of measurement method 1: fθ lens imaging . 9
Figure 2 – Far field optical system diagram . 9
Figure 3 – Apparatus configuration: measurement method 2 – Direct imaging using an
integrating sphere .
Figure 4 – Apparatus configuration: measurement method 2 – Direct imaging using a
single-mode fibre .
Figure 5 – Apparatus configuration: measurement method 2 – Direct imaging using an
imaging device .
Figure 3 – Apparatus configuration of measurement method 2: direct imaging . 13
Figure 4 – Calibration apparatus example . 14
Figure 5 – Acquired far field image . 15
Figure 6 – Acquired far field image with false colour . 15
Figure 7 – Optical centre determination . 16
Figure 8 – Coordinate conversion Transformation of x-y to polar coordinates on the
image sensor plane . 17
Figure 9 – Standard Typical encircled angular flux chart . 19
Figure A.1 – An example of an optical system using an fθ lens . 21
Figure C.1 – Scheme of shading effect . 23
Figure C.2 – Example of shading characteristics . 24
Figure D.1 – Schematic view of the setup for the EAF compliance test . 25

– 4 – IEC 61300-3-53:2020 RLV © 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 step index 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 t
...

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)

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
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

need further assistance, please contact the Customer Service

Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Electropedia - www.electropedia.org
webstore.iec.ch/advsearchform Le premier dictionnaire d'électrotechnologie en ligne au
La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en
en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire
projets et les publications remplacées ou retirées. Electrotechnique International (IEV) en ligne.

IEC Just Published - webstore.iec.ch/justpublished Glossaire IEC - std.iec.ch/glossary
Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais
Published détaille les nouvelles publications parues. et en français, extraites des articles Termes et Définitions des
Disponible en ligne et une fois par mois par email. publications IEC parues depuis 2002. Plus certaines entrées
antérieures extraites des publications des CE 37, 77, 86 et
Service Clients - webstore.iec.ch/csc CISPR de l'IEC.

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[e-mail].
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

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 .
...