EN IEC 60793-1-44:2023
(Main)Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off wavelength
Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off wavelength
IEC 60793-1-44:2023 establishes uniform requirements for measuring the cut-off wavelength of single-mode optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. This document gives methods for measuring the cut-off wavelength for uncabled or cabled single mode telecom fibre. These procedures apply to all category B and C fibre types. There are three methods of deployment for measuring the cut-off wavelength: - method A: cable cut-off using uncabled fibre 22 m long sample, lcc; - method B: cable cut-off using cabled fibre 22 m long sample, lcc; - method C: fibre cut-off using uncabled fibre 2 m long sample, lc. All methods require a reference measurement. There are two reference-scan techniques, either or both of which can be used with all methods: - bend-reference technique; - multimode-reference technique using category A1(OM1-OM5) multimode fibre. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) used the diameter of the fibre loops to describe deployment; b) added Annex D related to cut-off curve artifacts; c) reorganized information and added more figures to clarify concepts.
Lichtwellenleiter - Teil 1-44: Mess- und Prüfverfahren - Grenzwellenlänge
Fibres optiques - Partie 1-44: Méthodes de mesure et procédures d'essai - Longueur d'onde de coupure
IEC 60793-1-44: 2023 établit des exigences uniformes pour mesurer la longueur d’onde de coupure des fibres optiques unimodales, contribuant ainsi au contrôle des fibres et câbles dans des relations commerciales. Le présent document donne des méthodes de mesure de la longueur d’onde de coupure pour les fibres de télécommunications unimodales câblées ou non câblées. Ces procédures s’appliquent à tous les types de fibres de catégories B et C (voir Références normatives). Il existe trois méthodes de déploiement pour mesurer la longueur d’onde de coupure. - méthode A: coupure en câble utilisant un échantillon de fibre non câblée de longueur 22 m, lcc; - méthode B: coupure en câble utilisant un échantillon de fibre câblée de longueur 22 m, lcc; - méthode C: coupure de fibre utilisant un échantillon de fibre non câblée de longueur 2 m, lc. Toutes les méthodes exigent une mesure de référence. Il existe deux techniques d’exploration de référence, l’une et/ou l’autre peuvent être utilisées avec toutes les méthodes: - technique de la fibre de référence par courbure; - technique de la fibre de référence multimodale utilisant la fibre multimodale de catégorie A1 (OM1-OM5). Cette troisième édition annule et remplace la deuxième édition parue en 2011. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) utilisation du diamètre des boucles de fibres pour décrire le déploiement b) ajout de l’Annexe D, relative aux artefacts de courbe de coupure c) réorganisation des informations et ajout de figures supplémentaires pour clarifier les concepts.
Optična vlakna - 1-44. del: Merilne metode in postopki preskušanja - Mejna valovna dolžina (IEC 60793-1-44:2023)
Standard IEC 60793-1-44:2023 določa enotne zahteve za merjenje mejne valovne dolžine enorodnih optičnih vlaken, pri čemer pomaga pri pregledu vlaken in kablov za komercialne namene. Za dokument podaja metode za merjenje mejne valovne dolžine za nekablirana ali kablirana enorodna telekomunikacijska vlakna. Ti postopki se uporabljajo za vlakna vrste B in C. Na voljo so tri metode za merjenje mejne valovne dolžine:
– metoda A: mejna valovna dolžina kabla z vzorcem nekabliranega vlakna dolžine 22 m, lcc;
– metoda B: mejna valovna dolžina kabla z vzorcem kabliranega vlakna dolžine 22 m, lcc;
– metoda C: mejna valovna dolžina vlakna z vzorcem nekabliranega vlakna dolžine 2 m, lc.
Pri vseh metodah je potrebna referenčna meritev. Obstajata dve tehniki referenčnega skeniranja, ki ju je mogoče posamično ali skupaj uporabiti z vsemi metodami:
– upogibna referenčna tehnika;
– večrodna referenčna tehnika, pri kateri se uporablja večrodno vlakno kategorije A1(OM1-OM5).
Tretja izdaja razveljavlja in nadomešča drugo izdajo, objavljeno leta 2011. Ta izdaja je tehnično popravljena izdaja. Ta izdaja v primerjavi s prejšnjo vključuje naslednje pomembne tehnične spremembe:
a) za opis uporabe je uporabljen premer optičnih zank;
b) dodan je dodatek D, povezan z artefakti mejne krivulje;
c) informacije so reorganizirane in dodanih je več slik za pojasnitev konceptov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2023
Optična vlakna - 1-44. del: Merilne metode in postopki preskušanja - Mejna
valovna dolžina (IEC 60793-1-44:2023)
Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off
wavelength (IEC 60793-1-44:2023)
Lichtwellenleiter - Messmethoden und Prüfverfahren - Teil 1-44: Grenzwellenlänge (IEC
60793-1-44:2023)
Fibres optiques - Partie 1-44: Méthodes de mesure et procédures d'essai - Longueur
d'onde de coupure (IEC 60793-1-44:2023)
Ta slovenski standard je istoveten z: EN IEC 60793-1-44:2023
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60793-1-44
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2023
ICS 33.180.10 Supersedes EN 60793-1-44:2011
English Version
Optical fibres - Part 1-44: Measurement methods and test
procedures - Cut-off wavelength
(IEC 60793-1-44:2023)
Fibres optiques - Partie 1-44: Méthodes de mesure et Lichtwellenleiter - Teil 1-44: Mess- und Prüfverfahren -
procédures d'essai - Longueur d'onde de coupure Grenzwellenlänge
(IEC 60793-1-44:2023) (IEC 60793-1-44:2023)
This European Standard was approved by CENELEC on 2023-08-28. 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,
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Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60793-1-44:2023 E
European foreword
The text of document 86A/2314/FDIS, future edition 3 of IEC 60793-1-44, 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 60793-1-44:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-05-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-08-28
document have to be withdrawn
This document supersedes EN 60793-1-44:2011 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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60793-1-44:2023 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 standard indicated:
IEC 60793-1-40 NOTE Approved as EN IEC 60793-1-40
IEC 60793-2-10 NOTE Approved as EN IEC 60793-2-10
IEC 60793-2-50 NOTE Approved as EN IEC 60793-2-50
IEC 60793-2-60 NOTE Approved as EN 60793-2-60
Annex ZA
(normative)
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)
applies.
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 available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60793-1-1 - Optical fibres - Part 1-1: Measurement EN IEC 60793-1-1 -
methods and test procedures - General
and guidance
IEC 60793-1-44 ®
Edition 3.0 2023-07
INTERNATIONAL
STANDARD
colour
inside
Optical fibres –
Part 1-44: Measurement methods and test procedures – Cut-off wavelength
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-7033-2
– 2 – IEC 60793-1-44:2023 © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Background . 7
5 Overview of methods . 7
6 Reference test method . 8
7 Apparatus . 8
7.1 Light source . 8
7.2 Modulation . 8
7.3 Launch optics . 8
7.4 Support and positioning apparatus . 8
7.5 Deployment mandrel . 9
7.5.1 General . 9
7.5.2 Cable cut-off wavelength deployment, method A . 9
7.5.3 Cable cut-off wavelength deployment, method B . 9
7.5.4 Fibre cut-off wavelength deployment, method C. 9
7.6 Detection optics . 10
7.7 Detector assembly and signal detection electronics . 10
7.8 Cladding mode stripper . 10
8 Sampling specimen . 10
8.1 Specimen length . 10
8.2 Specimen end face . 10
9 Procedure . 11
9.1 Positioning of specimen in apparatus . 11
9.1.1 General requirements for all methods . 11
9.1.2 Deployment requirements for each method . 11
9.2 Measurement of output power . 11
9.2.1 Overview . 11
9.2.2 Bend-reference technique . 12
9.2.3 Multimode-reference technique . 12
10 Calculations . 12
10.1 Bend-reference technique . 12
10.2 Multimode-reference technique . 13
11 Mapping functions . 14
12 Results . 14
13 Specification information . 15
Annex A (normative) Requirements specific to method A – Cable cut-off wavelength,
λ
, using uncabled fibre . 16
cc
A.1 Specimen length . 16
A.2 Procedure – Position specimen on deployment mandrel . 16
Annex B (normative) Requirements specific to method B – Cable cut-off wavelength,
λ , using cabled fibre . 17
cc
B.1 Specimen length . 17
B.2 Procedure – Position specimen on deployment mandrel . 17
IEC 60793-1-44:2023 © IEC 2023 – 3 –
Annex C (normative) Requirements specific to method C – Fibre cut-off wavelength,λ . 18
c
C.1 Specimen length . 18
C.2 Procedure – Position specimen on deployment mandrel . 18
Annex D (informative) Cut-off curve artifacts . 20
D.1 Description of curve artifacts . 20
D.2 Curve-fitting technique for artifact filtering . 20
D.2.1 Overview . 20
D.2.2 General . 21
D.2.3 Step 1: define the upper wavelength region . 22
D.2.4 Step 2: characterize the spectral transmittance . 22
D.2.5 Step 3: calculate the deviation of the spectral transmittance from the
linear fit . 22
D.2.6 Step 4: determine the end wavelength of the transition region . 23
D.2.7 Step 5: determine the start wavelength of the transition region . 23
D.2.8 Step 6: characterize the transition region with the theoretical model . 23
D.2.9 Step 7: compute the cut-off wavelength, λ . 24
c
D.3 Fibre deployment method for artifact attenuation . 25
Bibliography . 27
Figure 1 – Cut-off measurement system block diagram . 7
Figure 2 – Deployment configuration for cable cut-off wavelength λ , method A . 9
cc
Figure 3 – Deployment configuration for cable cut-off wavelength λ , method B . 9
cc
Figure 4 – Standard deployment for fibre cut-off wavelength measurement . 10
Figure 5 – Cut-off wavelength using the bend-reference technique . 11
Figure 6 – Cut-off wavelength using the multimode-reference technique . 12
Figure 7 – Cable cut-off vs fibre cut-off for a specific fibre (multimode reference) . 14
Figure A.1 – Alternative cable cut-off deployment . 16
Figure C.1 – Alternative fibre cut-off deployment – Sliding semi-circle .
...
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