EN 61280-1-4:2003
(Main)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
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
Provides a procedure for the collection of two-dimensional fibre optic nearfield grayscale data and subsequent reduction to one-dimensional data expressed as a set of three sampled parametric functions of radius from the fibre's optical center. The object is to reduce measurement errors and inter-laboratory variation.
Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme - Teil 1-4: Allgemeine Kommunikationsuntersysteme - Erfassung und Reduzierung zweidimensionaler Mehrmodenfasern für Nahfelddaten von Lasersendern
Procédures d'essai des sous-systèmes de télécommunication à fibres optiques - Partie 1-4: Procédures d'essai des sous-systèmes généraux de télécommunication - Recueil et réduction de données à deux dimensions de champs proches pour les émetteurs de laser à fibres multimodales
Provides a procedure for the collection of two-dimensional fibre optic nearfield grayscale data and subsequent reduction to one-dimensional data expressed as a set of three sampled parametric functions of radius from the fibre's optical center. The object is to reduce measurement errors and inter-laboratory variation.
Preskusni postopki komunikacijskega podsistema optičnih vlaken – 1-4. del: Splošni komunikacijski podsistemi - zbiranje in zmanjševanje dvo-dimenzionalnih bližnjih podatkov za laserske oddajnike za večrodnavlakna (IEC 61280-1-4:2003)*
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Standards Content (Sample)
SLOVENSKI SIST EN 61280-1-4:2004
STANDARD
september 2004
Preskusni postopki komunikacijskega podsistema optičnih vlaken – 1-4. del:
Splošni komunikacijski podsistemi - zbiranje in zmanjševanje dvo-
dimenzionalnih bližnjih podatkov za laserske oddajnike za večrodnavlakna
(IEC 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 (IEC 61280-1-4:2003)
ICS 33.180.01 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD EN 61280-1-4
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2003
ICS 33.180.01
English version
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
(IEC 61280-1-4:2003)
Procédures d'essai des sous-systèmes Prüfverfahren für Lichtwellenleiter-
de communication à fibres optiques Kommunikationsuntersysteme
Partie 1-4: Procédures d'essai des sous- Teil 1-4: Allgemeine
systèmes généraux de télécommunication - Kommunikationsuntersysteme -
Recueil et réduction de données Erfassung und Reduzierung
à deux dimensions de champs proches zweidimensionaler Mehrmodenfasern
pour les émetteurs de laser à fibres für Nahfelddaten von Lasersendern
multimodales (IEC 61280-1-4:2003)
(CEI 61280-1-4:2003)
This European Standard was approved by CENELEC on 2003-03-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61280-1-4:2003 E
Foreword
The text of document 86C/465/FDIS, future edition 1 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 2003-03-01.
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) 2003-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-03-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annex A is informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61280-1-4:2003 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 61280-1-4:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
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
1) 2)
IEC 60793-1-20 - Optical fibres EN 60793-1-20 2002
Part 1-20: Measurement methods and
test procedures - Fibre geometry
1) 2)
IEC 60793-1-41 - Part 1-41: Measurement methods and EN 60793-1-41 2002
test procedures – Bandwidth
1) 2)
IEC 60793-1-43 - Part 1-43: Measurement methods and EN 60793-1-43 2002
test procedures - Numerical aperture
1) 2)
IEC 60825-2 - Safety of laser products EN 60825-2 2000
Part 2: Safety of optical fibre
communication systems
1)
Undated reference.
2)
Valid edition at date of issue.
INTERNATIONAL IEC
STANDARD 61280-1-4
First edition
2003-01
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
Procédures d'essai des sous-systèmes
de télécommunication à fibres optiques –
Partie 1-4:
Procédures d'essai des sous-systèmes généraux
de télécommunication – Recueil et réduction de données
à deux dimensions de champs proches pour les
émetteurs de laser à fibres multimodales
© IEC 2003 ⎯ Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
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International Electrotechnical Commission
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– 2 – 61280-1-4 © IEC:2003(E)
CONTENTS
FOREWORD . 3
1 General . 4
1.1 Scope and object. 4
1.2 Assumptions . 4
2 Normative references. 5
3 Apparatus . 5
3.1 Sources . 5
3.1.1 Calibration source. 5
3.1.2 Laser under test. 5
3.2 Test jumper assembly. 6
3.3 Fibre shaker . 6
3.4 Micropositioner . 6
3.5 Microscope objective . 7
3.6 Detector. 7
4 Sampling and specimens . 7
5 Procedure. 7
5.1 Overview of the measurement procedure. 7
5.2 Camera calibration . 8
5.2.1 Camera geometric calibration . 8
5.2.2 Camera optical calibration. 9
5.3 Measuring 2D nearfield flux distributions . 9
5.4 Finding the optical center of the test jumper assembly. 9
5.5 Finding the nearfield distribution of a laser under test.10
6 Calculations or interpretation of results.10
6.1 Coordinate transforms .10
6.2 Centroid computation.11
6.3 Computation of radial data functions.12
7 Documentation.14
8 Specification information.15
Annex A (informative) Camera data reduction .16
Bibliography.20
61280-1-4 © IEC:2003(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61280-1-4 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics
The text of this standard is based on the following documents:
FDIS Report on voting
86C/465/FDIS 86C/494/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.
The committee has decided that the contents of this publication will remain unchanged until 2008.
At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 4 – 61280-1-4 © IEC:2003(E)
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
1 General
1.1 Scope and object
This part of IEC 61280 sets forth a standard procedure for the collection of two-dimensional
fibre optic nearfield grayscale data and subsequent reduction to one-dimensional data
expressed as a set of three sampled parametric functions of radius from the fibre’s optical
center. The object of this standard is to reduce measurement errors and inter-laboratory
variation, supporting accurate mathematical prediction of minimum guaranteed link length in
gigabit and ten gigabit fibre optic data communications systems.
These radial functions are intended to characterize fibre optic laser sources for use in
mathematical models predicting the minimum guaranteed length of a communications link.
Although available as a byproduct, estimation of the nearfie
...
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