SIST EN 60793-1-34:2004

Optical fibres -- Part 1-34: Measurement methods and test procedures - Fibre curl

Establishes uniform requirements for fibre curl or latent curvature in uncoated optical fibres. This is important in minimizing splice loss when using fusion splicers. Two methods are used: (a) side view microscopy, (b) laser beam scattering. Method (a) is the reference test method to resolve disputes.

Lichtwellenleiter -- Teil 1-34: Messmethoden und Prüfverfahren - Faserringeln

Fibres optiques -- Partie 1-34: Méthodes de mesure et procédures d'essai - Ondulation

Etablit des perscriptions uniformes applicables à l'ondulation des fibres ou à la courbure latente des fibres optiques nues. Ce paramètre est important de reduire des pertes par épissures lors de l'utilisation de soudeuses par fusion. Deux méthodes sont reconnues: (a) par microscopie latérale, (b) par diffusion de rayons laser. La méthode (a) est la méthode d'essai de référence en cas de litiges.

Optična vlakna – 1-34. del: Metode merjenja in preskusni postopki - Kodranje vlakna (IEC 60793-1-34:2001)*

General Information

• Status: Withdrawn
• Publication Date: 31-Aug-2004
• Withdrawal Date: 30-Sep-2006
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: iTEL - Communication cables
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 01-Oct-2006
• Due Date: 01-Oct-2006
• Completion Date: 01-Oct-2006
• Ref Project: EN 60793-1-34:2002 - Optical fibres - Part 1-34: Measurement methods and test procedures - Fibre curl

Relations

• Revised: SIST EN 60793-1-34:2006 - Optical fibres -- Part 1-34: Measurement methods and test procedures - Fibre curl
• Effective Date: 13-May-2010
• Replaced By: SIST EN 60793-1-34:2006 - Optical fibres -- Part 1-34: Measurement methods and test procedures - Fibre curl
• Effective Date: 07-Jun-2022
• Replaced By: SIST EN 60793-1-34:2006 - Optical fibres -- Part 1-34: Measurement methods and test procedures - Fibre curl
• Effective Date: 01-Jun-2006
• Replaced By: SIST EN 60793-1-34:2006 - Optical fibres -- Part 1-34: Measurement methods and test procedures - Fibre curl
• Effective Date: 29-Jan-2023

Standards Content (Sample)

EUROPEAN STANDARD EN 60793-1-34
NORME EUROPÉENNE
EUROPÄISCHE NORM February 2002
ICS 33.180.10
English version
Optical fibres
Part 1-34: Measurement methods and test procedures –
Fibre curl
(IEC 60793-1-34:2001)
Fibres optiques Lichtwellenleiter
Partie 1-34: Méthodes de mesure Teil 1-34: Messmethoden
et procédures d'essai – und Prüfverfahren –
Ondulation Faserringeln
(CEI 60793-1-34:2001) (IEC 60793-1-34:2001)
This European Standard was approved by CENELEC on 2001-10-01. 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, Malta, 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
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60793-1-34:2002 E

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EN 60793-1-34:2002 - 2 -
Foreword
The text of document 86A/668/FDIS, future edition 1 of IEC 60793-1-34, prepared by SC 86A, Fibres
and cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 60793-1-34 on 2001-10-01.
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) 2002-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-10-01
Annexes designated "informative" are given for information only.
In this standard, annex A is normative and annexes B and C are informative.
Compared to IEC 60793-1:1989 and IEC 60793-2:1992, IEC/SC 86A has adopted a revised structure
of the new IEC 60793 series: The individual measurement methods and test procedures for optical
fibres are published as "Part 1-XX"; the product standards are published as "Part 2-XX".
The general relationship between the new series of EN 60793 and the superseded European
Standards of the EN 188000 series is as follows:
EN Title supersedes
EN 60793-1-XX Optical fibres -- Part 1-XX: Measurement methods Individual subclauses of
and test procedures EN 188000:1992
EN 188100:1995
EN 60793-2-XX Optical fibres -- Part 2-XX: Product specifications
EN 188101:1995
EN 188102:1995
EN 188200:1995
EN 188201:1995
EN 188202:1995
EN 60793-1-3X consists of the following parts, under the general title: Optical fibres:
- Part 1-30: Measurement methods and test procedures – Fibre proof test
- Part 1-31: Measurement methods and test procedures – Tensile strength
- Part 1-32: Measurement methods and test procedures – Coating strippability
- Part 1-33: Measurement methods and test procedures – Stress corrosion susceptibility
- Part 1-34: Measurement methods and test procedures – Fibre curl
__________
Endorsement notice
The text of the International Standard IEC 60793-1-34:2001 was approved by CENELEC as a European
Standard without any modification.
__________

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NORME CEI
INTERNATIONALE IEC
60793-1-34
INTERNATIONAL
Première édition
STANDARD
First edition
2001-07
Fibres optiques –
Partie 1-34:
Méthodes de mesure et procédures d'essai –
Ondulation
Optical fibres –
Part 1-34:
Measurement methods and test procedures –
Fibre curl
 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: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
N
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60793-1-34  IEC:2001 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.11
2 Normative references .11
3 Apparatus.11
3.1 Fibre holding fixture.13
3.2 Fibre rotator .13
3.3 End measurement device .13
3.4 Computer (optional).13
4 Sample preparation .13
5 Procedure.13
5.1 Mounting of the fibre .13
5.2 Rotation .13
5.3 Calculation .13
6 Fibre curl calculations.13
7 Results .15
8 Specification information .15
Annex A (normative) Fibre curl by side view microscopy .17
Annex B (informative) Fibre curl by laser beam scattering.23
Annex C (informative) Derivation of the circular fibre curl model .27
Figure A.1 – Schematic diagram for apparatus to measure fibre curl using an optical
microscope .19
Figure A.2 – Schematic diagram for apparatus to measure fibre curl using a laser
micrometer.21
Figure A.3 – Schematic diagram for apparatus to measure fibre curl while securing the
sample in a ferrule .21
Figure B.1 – Schematic diagram of optical curl by laser beam scattering .25

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60793-1-34  IEC:2001 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 1-34: Measurement methods and test procedures –
Fibre curl
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 60793-1-34 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This standard, together with the other standards in the IEC 60793-1-3X series, cancels and
replaces the second edition of IEC 60793-1-3, of which it constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
86A/668/FDIS 86A/692/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.
Annex A forms an integral part of this standard.
Annexes B and C are for information only.

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60793-1-34  IEC:2001 – 7 –
IEC 60793-1-3X consists of the f
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