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

IEC 60793-1-34:2021 is available as IEC 60793-1-34:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60793-1-34:2021 establishes uniform requirements for the mechanical characteristic: fibre curl or latent curvature in uncoated optical fibres, i.e. a specified length of the fibre has been stripped from coating. Fibre curl has been identified as an important parameter for minimizing the splice loss of optical fibres when using passive alignment fusion splicers or active alignment mass fusion splicers.Two methods are recognized for the measurement of fibre curl, in uncoated optical fibres: - method A: side view microscopy; - method B: laser beam scattering. Both methods measure the radius of curvature of an uncoated fibre by determining the amount of deflection that occurs as an unsupported fibre end is rotated about the fibre's axis. Method A uses visual or digital video methods to determine the deflection of the fibre while method B uses a line sensor to measure the maximum deflection of one laser beam relative to a reference laser beam. By measuring the deflection behaviour of the fibre as it is rotated about its axis and understanding the geometry of the measuring device, the fibre's radius of curvature can be calculated from simple circular models, the derivation of which are given in Annex C. Both methods are applicable to type B optical fibres as described in IEC 60793 (all parts). Method A is the reference test method, used to resolve disputes. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - modification of several derivation equations for laser scattering; - change of angular increment from 10° to 30° to 10° to 45°; - change of Annex B from informative to normative.

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

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

IEC 60793-1-34:2021 est disponible sous forme de IEC 60793-1-34:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60793-1-34:2021 établit des exigences uniformes pour les caractéristiques mécaniques: ondulation de fibre ou courbure latente des fibres optiques sans revêtement, c'est-à-dire qu'une longueur spécifiée de la fibre a été dénudée. L'ondulation de fibre a été définie comme étant un paramètre important de réduction des pertes d'épissure des fibres optiques lors de l'utilisation de soudeuses par fusion avec alignement passif ou de soudeuses par fusion de masse avec alignement actif. Deux méthodes sont reconnues pour la mesure de l'ondulation de fibre, pour les fibres optiques sans revêtement: - méthode A: par microscopie latérale; - méthode B: par diffusion d'un faisceau laser. Les deux méthodes mesurent le rayon de courbure d'une fibre sans revêtement en déterminant la valeur de la flèche d'une extrémité de fibre non soutenue soumise à une rotation autour de son axe. La méthode A utilise des méthodes visuelles ou vidéo numériques pour déterminer la flèche de la fibre tandis que la méthode B utilise un capteur de ligne pour mesurer la flèche maximale d’un faisceau laser par rapport à un faisceau laser de référence. En mesurant le comportement de la flèche de la fibre pendant qu’elle est soumise à une rotation autour de son axe et d’après la configuration du dispositif de mesure, le rayon de courbure de la fibre peut être calculé à partir de modèles circulaires simples, déterminés à l’Annexe C. Ces deux méthodes sont applicables aux fibres optiques du type B telles que décrites dans la série IEC 60793 (toutes les parties). La méthode A est la méthode d'essai de référence, utilisée en cas de litige. Cette troisième édition annule et remplace la deuxième édition parue en 2006. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - modification de plusieurs équations de détermination pour la diffusion laser; - modification de l'incrément angulaire qui passe de 10° à 30° à 10° à 45°; - changement de statut de l'Annexe B qui devient normative.

Optična vlakna - 1-34. del: Merilne metode in postopki preskušanja - Zvijanje vlaken (IEC 60793-1-34:2021)

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Standards Content (Sample)

SIST EN IEC 60793-1-34:2021
SIST EN 60793-1-34:2006
Optična vlakna - 1-34. del: Merilne metode in postopki preskušanja - Zvijanje
vlaken (IEC 60793-1-34:2021)
Optical fibres - Part 1-34: Measurement methods and test procedures - Fibre curl (IEC
Lichtwellenleiter - Teil 1-34: Messmethoden und Prüfverfahren - Faserringeln (IEC 60793
Fibres optiques - Partie 1-34: Méthodes de mesure et procédures d'essai - Ondulation
de la fibre (IEC 60793-1-34:2021)
Ta slovenski standard je istoveten z: EN IEC 60793-1-34:2021
33.180.10 (Optična) vlakna in kabli Fibres and cables
SIST EN IEC 60793-1-34:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60793-1-34:2021

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SIST EN IEC 60793-1-34:2021



March 2021
ICS 33.180.10 Supersedes EN 60793-1-34:2006 and all of its
amendments and corrigenda (if any)
English Version
Optical fibres - Part 1-34: Measurement methods and test
procedures - Fibre curl
(IEC 60793-1-34:2021)
Fibres optiques - Partie 1-34: Méthodes de mesure et Lichtwellenleiter - Teil 1-34: Messmethoden und
procédures d'essai - Ondulation de la fibre Prüfverfahren - Faserringeln
(IEC 60793-1-34:2021) (IEC 60793-1-34:2021)
This European Standard was approved by CENELEC on 2021-03-17. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 60793-1-34:2021 E

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SIST EN IEC 60793-1-34:2021
EN IEC 60793-1-34:2021 (E)
European foreword
The text of document 86A/1971/CDV, future edition 3 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
approved by CENELEC as EN IEC 60793-1-34:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-12-17
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-03-17
document have to be withdrawn
This document supersedes EN 60793-1-34:2006 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60793-1-34:2021 was approved by CENELEC as a
European Standard without any modification.

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SIST EN IEC 60793-1-34:2021
EN IEC 60793-1-34:2021 (E)
Annex ZA

Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is avai

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