SIST EN 61300-3-4:2002

SLOVENSKI STANDARD
SIST EN 61300-3-4:2002
01-september-2002
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-4: Examinations and measurements -
Attenuation (IEC 61300-3-4:2001)
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures -- Part 3-4: Examinations and measurements - Attenuation
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und
Meßverfahren -- Teil 3-4: Untersuchungen und Messungen - Dämpfung
Dispositifs d'interconnexion et composants passifs à fibres optiques - Méthodes
fondamentales d'essais et de mesures -- Partie 3-4: Examens et mesures -
Affaiblissement
Ta slovenski standard je istoveten z: EN 61300-3-4:2001
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
SIST EN 61300-3-4:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 61300-3-4:2002

---------------------- Page: 2 ----------------------

SIST EN 61300-3-4:2002
EUROPEAN STANDARD EN 61300-3-4
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2001
ICS 33.180.20 Supersedes EN 61300-3-4:1998
English version
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures
Part 3-4: Examinations and measurements -
Attenuation
(IEC 61300-3-4:2001)
Dispositifs d'interconnexion et Lichtwellenleiter -
composants passifs à fibres optiques - Verbindungselemente und passive Bauteile -
Méthodes fondamentales d'essais Grundlegende Prüf- und Meßverfahren
et de mesures Teil 3-4: Untersuchungen und Messungen -
Partie 3-4: Examens et mesures - Dämpfung
Affaiblissement (IEC 61300-3-4:2001)
(CEI 61300-3-4:2001)
This European Standard was approved by CENELEC on 2001-07-01. 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, 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
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61300-3-4:2001 E

---------------------- Page: 3 ----------------------

SIST EN 61300-3-4:2002
EN 61300-3-4:2001 - 2 -
Foreword
The text of document 86B/1418/FDIS, future edition 2 of IEC 61300-3-4, 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 was approved by CENELEC as EN 61300-3-4 on 2001-07-01.
This European Standard supersedes EN 61300-3-4:1998.
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) 2002-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-07-01
Annexes designated "normative" are part of the body of the standard.
In this standard, annex ZA is normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61300-3-4:2001 was approved by CENELEC as a
European Standard without any modification.
__________

---------------------- Page: 4 ----------------------

SIST EN 61300-3-4:2002
- 3 - EN 61300-3-4:2001
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
IEC 60793-1 Series Optical fibres --
Part 1: Generic specification
IEC 61300-1 1995 Fibre optic interconnecting devices and EN 61300-1 1997
passive components - Basic test and
measurement procedures
Part 1: General and guidance
IEC 61300-3-1 1995 Part 3-1: Examinations and EN 61300-3-1 1997
measurements - Visual examination

---------------------- Page: 5 ----------------------

SIST EN 61300-3-4:2002

---------------------- Page: 6 ----------------------

SIST EN 61300-3-4:2002
NORME
CEI
INTERNATIONALE IEC
61300-3-4
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2001-01
Dispositifs d'interconnexion et composants
passifs à fibres optiques –
Méthodes fondamentales d'essais et de mesures –
Partie 3-4:
Examens et mesures – Affaiblissement
Fibre optic interconnecting devices
and passive components –
Basic test and measurement procedures –
Part 3-4:
Examinations and measurements –
Attenuation
© IEC 2001 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
Q
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

---------------------- Page: 7 ----------------------

SIST EN 61300-3-4:2002
61300-3-4 © IEC:2001 – 3 –
CONTENTS
Page
FOREWORD . 7
Clause
1 Scope . 11
2 Normative references. 11
3 General description. 11
3.1 Precautions . 13
4 Apparatus .13
4.1 Launch conditions and source (S) . 13
4.2 Power meter (D) . 15
4.3 Temporary joint (TJ) . 15
4.4 Fibre. 17
4.5 Reference plugs (RP) . 17
4.6 Reference adaptors (Ar) . 17
4.7 Mode filter (mf) . 17
4.8 Ultra-restrictive launch apparatus . 19
5 Procedure .19
5.1 Pre-conditioning. 19
5.2 Visual inspection. 19
5.3 DUT configurations and test methods . 21
5.4 Attenuation measurements with a power meter . 23
5.4.1 Cut-back . 23
5.4.2 Substitution. 23
5.4.3 Insertion method (A) . 25
5.4.4 Insertion method (B) . 27
5.4.5 Insertion method (C) . 27
5.5 Attenuation measurements with an OTDR. 29
5.5.1 Measurement description . 29
5.5.2 Measurement theory . 31
5.5.3 Measurement method. 31
5.5.4 Evaluation procedure . 31
6 Details to be specified. 35
Figure 1 – Cutback method – Type 1, type 2, and type 3 DUTs . 23
Figure 2 – Substitution method – Type 4 DUT . 25
Figure 3 – Insertion method (A) – Type 2 DUT . 25
Figure 4 – Insertion method (B) – Type 5 and type 6 DUT . 27
Figure 5 – Insertion Method (C) – Type 4, type 5, type 7 and type 8 DUT . 27
Figure 6 – Method 1 – One launch section . 29
Figure 7 – Method 2 – Two launch sections. 29
Figure 8 – Non-reflective event . 33
Figure 9 – Reflective event. 33

---------------------- Page: 8 ----------------------

SIST EN 61300-3-4:2002
61300-3-4 © IEC:2001 – 5 –
Table 1 – Preferred source and launch conditions . 13
Table 2 – Preferred power-meter parameters . 15
Table 3 – Mandrel diameter sizes. 17
Table 4 – Ultra-restrictive launch conditions . 19
Table 5 – DUT configurations . 21

---------------------- Page: 9 ----------------------

SIST EN 61300-3-4:2002
61300-3-4 © IEC:2001 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –
Part 3-4: Examinations and measurements –
Attenuation
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 61300-3-4 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, published in 1998, and constitutes
a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
86B/1418/FDIS 86B/1468/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 3.

---------------------- Page: 10 ----------------------

SIST EN 61300-3-4:2002
61300-3-4 © IEC:2001 – 9 –
IEC 61300 consists of the following parts, under the general title Fibre optic interconnecting
devices and passive components – Basic test and measurement procedures:
– Part 1: General and guidance
– Part 2: Tests
– Part 3: Examinations and measurements.
The committee has decided that the contents of this publication will remain unchanged
until 2004. At this date, the publication will be
 reconfirmed;
 withdrawn;
 replaced by a revised edition, or
 amended.

---------------------- Page: 11 ----------------------

SIST EN 61300-3-4:2002
61300-3-4 © IEC:2001 – 11 –
FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –
Part 3-4: Examinations and measurements –
Attenuation
1 Scope
This part of IEC 61300 describes the various methods available to measure the attenuation of
optical components. It is not, however, applicable to dense wavelength division multiplexing
(DWDM) components.
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this International Standard. For dated references, subsequent
amendments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this International Standard are encouraged to investigate the possibility
of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of IEC
and ISO maintain registers of currently valid International Standards.
IEC 60793-1 (all parts), Optical fibres – Part 1: Generic specification
IEC 61300-1:1995, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 1: General and guidance
IEC 61300-3-1:1995, Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures – Part 3-1: Examinations and measurements – Visual
examination
3 General description
Attenuation is intended to give a value for the decrease of useful power, expressed in
decibels, resulting from the insertion of a device under test (DUT), within a length of optical
fibre cable. The term insertion loss is sometimes used in place of attenuation.
The DUT may have more than two optical ports. However, since an attenuation measurement
is made across only two ports, the DUTs in this standard shall be described as having two
ports. Seven different DUT configurations are described. The differences between these
configurations are primarily in the terminations of the optical ports. Terminations may consist
of bare fibre, a connector plug, or a receptacle.
The reference method for measuring attenuation is with an optical power meter. Optical time
domain reflectometry (OTDR) measurements are presented as an alternative method.
Three variations in the measurement of attenuation with a power meter are presented.
The reference and alternative methods to be used for each DUT configuration are defined in
table 5.
NOTE 1 Different test configurations and methods will result in different accuracies of the attenuation being
measured. In cases of dispute, the reference test method should be used.
NOTE 2 In multi-mode measurements, a change in modal distribution in the measurement system due to fibre
disturbance, will affect the attenuation measurement.

---------------------- Page: 12 ----------------------

SIST EN 61300-3-4:2002
61300-3-4 © IEC:2001 – 13 –
3.1 Precautions
The following test requirements shall be met.
3.3.1 The power in the fibre shall not be at a level high enough to generate non-linear
scattering effects.
3.3.2 The position of the fibres in the test should be fixed between the measurement of P
0
and P to avoid changes in attenuation due to bending loss.
1
4 Apparatus
4.1 Launch conditions and source (S)
Unless otherwise specified, the launch condition shall be in accordance with annex B of
IEC 61300-1.
The source unit consists of an optical emitter, the associated drive electronics and fibre pigtail
(if any). Preferred source and launch conditions are given in table 1 below.
Table 1 – Preferred source and launch conditions
No. Type Centre Spectral Stability Output Launch Source
o
wavelength width at 23 C power conditions type
(annex B,
nm nm dB/h
IEC 61300-1)
a
S1 Multi-mode B.2.1.2 LED
660 ± 30 ≥50 ±0,
...