EN 61280-1-4:2010

Fibre optic communication subsystem test procedures - Part 1-4: General communication subsystems - Light source encircled flux measurement method

IEC 61280-1-4:2009 sets forth a standard procedure for the collection of two-dimensional fibre optic nearfield greyscale data and subsequent reduction to one-dimensional data expressed as a set of three sampled parametric functions of radius from the fibre's optical centre. This revision of IEC 61280-1-4 continues to fulfil its original purpose, characterization of transmission light sources, which enables the accurate mathematical prediction of minimum guaranteed link length in 1 gigabit per second or greater fibre optic data communication systems. New to this revision is support for improved measurement precision of insertion loss in multimode fibre optic links through the characterization of measurement light sources.

Lichtwellenleiter-Kommunikationsuntersysteme - Grundlegende Prüfverfahren - Teil 1-4: Allgemeine Kommunikationsuntersysteme - Verfahren zur Messung des begrenzten Lichtstroms einer Strahlungsquelle

Procédures d'essai des sous-systèmes de télécommunication à fibres optiques - Partie 1-4: Sous-systèmes généraux de télécommunication - Méthode de mesure du flux inscrit de la source lumineuse

La CEI 61280-1-4:2009 définit une procédure standard consistant à collecter des données de niveaux de gris de champ proche de fibres optiques bidimensionnelles, puis à les réduire en données unidimensionnelles exprimées sous la forme d'un ensemble de trois fonctions paramétriques échantillonnées du rayon par rapport au centre optique de la fibre. La présente révision de la CEI 61280-1-4 satisfait ce but initial, la caractérisation des sources lumineuses de transmission, qui permet une prévision mathématique précise de la longueur minimum garantie de la liaison dans les systèmes de communication de données par fibres optiques de 1 gigabit par seconde ou plus. Une nouveauté de cette révision est l'amélioration de la précision des mesures des pertes d'insertion dans des liaisons à fibres optiques multimodales par la caractérisation des sources lumineuses de mesure.

Postopki preskušanja optičnega komunikacijskega podsistema - 1-4. del: Splošni komunikacijski podsistemi - Merilna metoda za pretok, ki ga obkroža svetlobni vir (IEC 61280-1-4:2009)

Ta del IEC 61280 je namenjen opredelitvi pretoka, ki ga obkrožata dve vrsti svetlobnega vira: transmisijski svetlobni viri, ki so običajno koherentni in vzbujajo manjše število rodov večrodovnega vlakna, in merilni svetlobni viri, ki so nekoherentni in vzbujajo večino rodov večrodovnega vlakna. Ta del IEC 61280 določa standardni postopek za zbiranje črno-belih dvodimenzionalnih bližnjih podatkov optičnih vlaken in kasnejše zmanjševanje na enodimenzionalne podatke, izražene kot zaporedje treh vzorčenih parametričnih funkcij premera od optične sredine vlakna. Ta revizija IEC 61280-1-4 še naprej izpolnjuje svoj prvotni namen, opredelitev lastnosti transmisijskih svetlobnih virov, kar omogoča natančno matematično napovedovanje minimalne zagotovljene dolžine povezave pri sistemih za podatkovno komunikacijo z optičnimi vlakni s hitrostjo 1 gigabita na sekundo ali več. Novost v tej reviziji je podpora boljši natančnosti merjenja notranje izgube pri večrodovnih povezavah iz optičnih vlaken preko opredelitve lastnosti merilnih svetlobnih virov. Ocena premera sredice vlakna ni namen tega standarda.

General Information

• Status: Published
• Publication Date: 11-Feb-2010
• Withdrawal Date: 31-Jan-2013
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: CLC/SR 86C - Fibre optic systems and active devices
• Drafting Committee: IEC/SC 86C - IEC_SC_86C
• Parallel Committee: IEC/SC 86C - IEC_SC_86C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 12-Feb-2010
• Completion Date: 12-Feb-2010
• Ref Project: SIST EN 61280-1-4:2010 - Fibre optic communication subsystem test procedures - Part 1-4: General communication subsystems - Light source encircled flux measurement method (IEC 61280-1-4:2009)

Relations

• Replaces: EN 61280-1-4:2003 - Fibre optic communication subsystem test procedures - Part 1-4: General communication subsystems - Collection and reduction of two-dimensional nearfield data for multimode fibre laser transmitters
• Effective Date: 28-Jan-2023
• Replaced By: EN IEC 61280-1-4:2023 - Fibre optic communication subsystem test procedures - Part 1-4: General communication subsystems - Light source encircled flux measurement method
• Effective Date: 23-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2010
1DGRPHãþD
SIST EN 61280-1-4:2004
3RVWRSNLSUHVNXãDQMDRSWLþQHJDNRPXQLNDFLMVNHJDSRGVLVWHPDGHO6SORãQL
NRPXQLNDFLMVNLSRGVLVWHPL0HULOQDPHWRGD]DSUHWRNNLJDRENURåDVYHWOREQLYLU
,(&
Fibre optic communication subsystem test procedures - Part 1-4: General
communication subsystems - Light source encircled flux measurement method (IEC
61280-1-4:2009)
Lichtwellenleiter-Kommunikationsuntersysteme - Grundlegende Prüfverfahren - Teil 1-4:
Allgemeine Kommunikationsuntersysteme - Verfahren zur Messung des begrenzten
Lichtstroms einer Strahlungsquelle (IEC 61280-1-4:2009)
Procédures d'essai des sous-systèmes de télécommunication à fibres optiques - - Partie
1-4: Sous-systèmes généraux de télécommunication - Méthode de mesure du flux inscrit
de la source lumineuse (CEI 61280-1-4:2009)
Ta slovenski standard je istoveten z: EN 61280-1-4:2010
ICS:
33.180.01 6LVWHPL]RSWLþQLPLYODNQLQD Fibre optic systems in
VSORãQR general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61280-1-4
NORME EUROPÉENNE
February 2010
EUROPÄISCHE NORM
ICS 33.180.01 Supersedes EN 61280-1-4:2003

English version
Fibre optic communication subsystem test procedures -
Part 1-4: General communication subsystems -
Light source encircled flux measurement method
(IEC 61280-1-4:2009)
Procédures d'essai des sous-systèmes  Lichtwellenleiter-
de télécommunication à fibres optiques - Kommunikationsuntersysteme -
Partie 1-4: Sous-systèmes généraux Grundlegende Prüfverfahren -
de télécommunication - Teil 1-4: Allgemeine
Méthode de mesure du flux inscrit Kommunikationsuntersysteme -
de la source lumineuse Verfahren zur Messung des begrenzten
(CEI 61280-1-4:2009) Lichtstroms einer Strahlungsquelle
(IEC 61280-1-4:2009)
This European Standard was approved by CENELEC on 2010-02-01. 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 Central Secretariat 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 Central Secretariat 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61280-1-4:2010 E
Foreword
The text of document 86C/920/FDIS, future edition 2 of IEC 61280-1-4, prepared by SC 86C, Fibre optic
systems and active devices, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote
and was approved by CENELEC as EN 61280-1-4 on 2010-02-01.
This European Standard supersedes EN 61280-1-4:2003.
The significant technical changes with respect to EN 61280-1-4:2003 are described in the introduction.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-11-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-02-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61280-1-4:2009 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60793-1-20 NOTE  Harmonized as EN 60793-1-20.
IEC 60793-1-41 NOTE  Harmonized as EN 60793-1-41.
__________
- 3 - EN 61280-1-4:2010
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60793-2-10 - Optical fibres - EN 60793-2-10 -
Part 2-10: Product specifications - Sectional
specification for category A1 multimode fibres

IEC 60825-1 - Safety of laser products - EN 60825-1 -
Part 1: Equipment classification and
requirements
IEC 61745 1988 End-face image analysis procedure for the - -
calibration of optical fibre geometry test sets

IEC 61280-1-4 ®
Edition 2.0 2009-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic communication subsystem test procedures –
Part 1-4: General communication subsystems – Light source encircled flux
measurement method
Procédures d’essai des sous-systèmes de télécommunication à fibres
optiques –
Partie 1-4: Sous-systèmes généraux de télécommunication – Méthode de
mesure du flux inscrit de la source lumineuse

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
W
CODE PRIX
ICS 33.180.01 ISBN 2-8318-1070-6
– 2 – 61280-1-4 © IEC:2009
CONTENTS
FOREWORD.4
0 Introduction .6
0.1 General .6
0.2 Changes from previous edition .6
0.3 Assumptions applicable to the characterization of data sources .6
0.4 Assumptions applicable to the characterization of measurement sources .6
1 Scope.7
2 Normative references .7
3 Terms and definitions .7
4 Symbols .8
5 Apparatus.9
5.1 Common apparatus .9
5.1.1 General .9
5.1.2 Computer .10
5.1.3 Image digitizer.10
5.1.4 Detector .10
5.1.5 Magnifying optics.11
5.1.6 Attenuation .11
5.1.7 Micropositioner (optional) .11
5.1.8 Input port.12
5.1.9 Calibration light source.12
5.2 Transmission source apparatus .12
5.2.1 General .12
5.2.2 Test jumper assembly.13
5.2.3 Fibre shaker .13
5.3 Measurement source apparatus .14
6 Sampling and specimens.14
7 Geometric calibration .15
8 Measurement procedure.15
8.1 Safety .15
8.2 Image acquisition .15
8.2.1 Raw image acquisition.15
8.2.2 Dark image acquisition .16
8.2.3 Corrected image .16
8.3 Optical centre determination.16
8.3.1 General .16
8.3.2 Centroid image .16
8.3.3 Centroid computation .17
8.4 Test source image acquisition .17
9 Computation of encircled flux .17
9.1 Computation of radial data functions .17
9.2 Integration limit and baseline determination.19
9.2.1 Integration limit.19
9.2.2 Baseline determination .19
9.2.3 Baseline subtraction .19

61280-1-4 © IEC:2009 – 3 –
9.3 Computation of encircled flux .19
10 Results .20
10.1 Information available with each measurement .20
10.2 Information available upon request.20
11 Specification information .20
Annex A (informative) Measurement sensitivity considerations .22
Annex B (informative) Theory of geometric calibration using the micropositioner .27
Annex C (normative) Procedure for geometric calibration using the micropositioner.32
Bibliography.34

Figure 1 – Apparatus block diagram.10
Figure 2 – Typical set-up for transmission source measurement .13
Figure 3 – Fibre shaker example.14
Figure 4 – Pixel and ring illustration.18
Figure A.1 – Core images from instrument A and instrument B .22
Figure A.2 – Compressed core images from instrument A and instrument B.22
Figure A.3 – Intensity versus radius for Instruments A and B .23

– 4 – 61280-1-4 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC COMMUNICATION SUBSYSTEM TEST PROCEDURES –

Part 1-4: General communication subsystems –
Light source encircled flux measurement method

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrote
...