EN 60793-1-42:2013

Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic dispersion

IEC 60793-1-42:2013 establishes uniform requirements for measuring the chromatic dispersion of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. This third edition cancels and replaces the second edition, published in 2007. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - the inclusion of category B6 single-mode fibres; - the deletion of test method D (interferometry). This standard should be read in conjunction with IEC 60793-1-1. Keywords: chromatic dispersion of optical fibre

Lichtwellenleiter - Teil 1-42: Messmethoden und Prüfverfahren - Chromatische Dispersion

Fibres optiques - Partie 1-42: Méthodes de mesure et procédures d’essai - Dispersion chromatique

La CEI 60793-1-42:2013 établit des exigences uniformes pour la mesure de la dispersion chromatique des fibres optiques, contribuant ainsi au contrôle des fibres et des câbles dans les relations commerciales. Cette troisième édition annule et remplace la deuxième édition parue en 2007, et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - Ajout des fibres unimodales de catégorie B6; - Suppression de la méthode d'essai D (interférométrie). Il convient que la présente norme soit lue conjointement avec la CEI 60793-1-1. Mots clés: dispersion chromatique des fibres optiques

Optična vlakna - 1-42. del: Metode merjenja in preskusni postopki - Kromatična disperzija

Ta del standarda IEC 60793 določa enotne zahteve za merjenje kromatične disperzije optičnih vlaken, pri čemer pomaga pri pregledu vlaken in kablov za komercialne namene. Kromatična disperzija se spreminja z valovno dolžino. Z nekaterimi metodami in izvedbami se meri skupinska zakasnitev glede na valovno dolžino, pri čemer se kromatična disperzija in strmina disperzije določita iz derivatov (ob upoštevanju valovne dolžine) teh podatkov. To razlikovanje se najpogosteje opravi po prilagoditvi podatkov matematičnemu modelu. Druge izvedbe lahko omogočijo neposredno merjenje (kromatične disperzije) pri vsaki zahtevani valovni dolžini. Pri nekaterih (pod)kategorijah vlaken se atributi kromatične disperzije določijo s parametri specifičnega modela. V teh primerih ustrezno priporočilo ali standard opredeli model, primeren za določitev opredeljenih parametrov. Pri drugih (pod)kategorijah vlaken se opredeli, da mora biti disperzija znotraj določenega razpona za enega ali več opredeljenih intervalov valovne dolžine. V zadnjem primeru se lahko opravijo neposredne meritve pri ekstremnih vrednostih valovne dolžine ali se uporabi nekakšen prilagoditveni model, da se omogočijo merilne metode ali izvedbe skupinske zakasnitve ali da se omogoči shramba omejenega sklopa parametrov, ki se lahko uporabijo za izračun interpolirane disperzije za posamezne valovne dolžine, ki morda nimajo dejanskih vrednosti neposrednega merjenja. Dodatek D vsebuje splošen opis prilagoditve kromatične disperzije in navaja več prilagoditvenih enačb, primernih za uporabo s katero koli merilno metodo ali kategorijo vlaken. Ta standard določa tri metode za merjenje kromatične disperzije: – metodo A: fazni zamik; – metodo B: spektralna skupinska zakasnitev v časovni domeni; – metodo C: diferencialni fazni zamik. Metode A, B in C se uporabljajo za merjenje kromatične disperzije naslednjih vlaken iz standarda IEC 60793-2 v določenem razponu valovne dolžine: – gradientnih večrodnih vlaken kategorije A1; – večrodnih vlaken podkategorij A4f, A4g in A4h; – enorodnih vlaken kategorij B1, B2, B4, B5 ter podkategorij B6_a1 in B6_a2. Metode se lahko uporabljajo za laboratorijske, tovarniške in terenske meritve kromatične disperzije, pri čemer je mogoče razpon valovne dolžine meritev po potrebi prilagoditi. Meritve se izvajajo pri temperaturi iz preglednice 1 iz standarda IEC 60793-1-1:2008, Standardni razpon atmosferskih pogojev. Metode so primerne za vlakna ali kable dolžine nad 1 km. Uporabljajo se lahko tudi za krajše dolžine, vendar lahko to vpliva na točnost in ponovljivost. Informacije, skupne vsem metodam, so navedene v točkah 1 do 8, pri čemer so informacije v zvezi z vsako posamezno metodo navedene v dodatkih A, B in C.

General Information

• Status: Published
• Publication Date: 04-Apr-2013
• Withdrawal Date: 27-Feb-2016
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: CLC/TC 86A - Optical fibres and optical fibre cables
• Drafting Committee: IEC/SC 86A - IEC_SC_86A
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 05-Apr-2013
• Completion Date: 05-Apr-2013
• Ref Project: SIST EN 60793-1-42:2014 - Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic dispersion

Relations

• Replaces: EN 60793-1-42:2007 - Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic dispersion
• Effective Date: 29-Jan-2023
• Corrected By: EN 60793-1-42:2013/AC:2013 - Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic dispersion
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2014
2SWLþQDYODNQDGHO0HWRGHPHUMHQMDLQSUHVNXVQLSRVWRSNL.URPDWLþQD
GLVSHU]LMD
Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic
dispersion
Lichtwellenleiter - Teil 1-42: Messmethoden und Prüfverfahren - Chromatische
Dispersion
Fibres optiques - Partie 1-42: Méthodes de mesure de la dispersion chromatique
Ta slovenski standard je istoveten z: EN 60793-1-42:2013
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60793-1-42
NORME EUROPÉENNE
April 2013
EUROPÄISCHE NORM
ICS 33.180.10 Supersedes EN 60793-1-42:2007

English version
Optical fibres -
Part 1-42: Measurement methods and test procedures -
Chromatic dispersion
(IEC 60793-1-42:2013)
Fibres optiques -  Lichtwellenleiter -
Partie 1-42: Méthodes de mesure Teil 1-42: Messmethoden
et procédures d’essai - und Prüfverfahren -
Dispersion chromatique Chromatische Dispersion
(CEI 60793-1-42:2013) (IEC 60793-1-42:2013)

This European Standard was approved by CENELEC on 2013-02-28. 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, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60793-1-42:2013 E
Foreword
The text of document 86A/1419/CDV, future edition 3 of IEC 60793-1-42, 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 60793-1-42:2013.

The following dates are fixed:
(dop) 2013-11-28
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2016-02-28
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60793-1-42:2007.

EN 60793 1-42:2007:
a) the inclusion of category B6 single-mode fibres;
b) the deletion of test method D (interferometry).

This standard should be read in conjunction with EN 60793-1-1.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60793-1-42:2013 was approved by CENELEC as a
European Standard without any modification.

- 3 - EN 60793-1-42:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

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 60793-1-1 2008 Optical fibres - EN 60793-1-1 2008
Part 1-1: Measurement methods and test
procedures - General and guidance

IEC 60793-1-41 - Optical fibres - EN 60793-1-41 -
Part 1-41: Measurement methods and test
procedures - Bandwidth
IEC 60793-2 - Optical fibres - EN 60793-2 -
Part 2: Product specifications - General

IEC 60793-1-42 ®
Edition 3.0 2013-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibres –
Part 1-42: Measurement methods and test procedures – Chromatic dispersion

Fibres optiques –
Partie 1-42: Méthodes de mesure et procédures d’essai – Dispersion

chromatique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 33.180.10 ISBN 978-2-83220-576-1

– 2 – 60793-1-42 © IEC:2013
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 7
3 Overview of methods . 7
3.1 Method A, phase shift . 7
3.2 Method B, spectral group delay in the time domain . 7
3.3 Method C, differential phase shift . 7
4 Reference test methods . 8
4.1 Category A1 and sub-category A4f, A4g and A4h multimode fibres . 8
4.2 Class B single-mode fibres . 8
5 Apparatus . 8
5.1 General . 8
5.2 Launch optics . 8
5.3 High-order mode filter (single-mode) . 8
5.4 Input positioning apparatus . 8
5.5 Output positioning apparatus . 8
5.6 Computation equipment . 9
6 Sampling and specimens . 9
6.1 Specimen length . 9
6.2 Specimen end face . 9
6.3 Reference fibre. 9
7 Procedure. 9
8 Calculations . 9
8.1 General . 9
8.2 Category A1 and sub-category A4f, A4g, A4h multimode fibres and category
B1.1, B1.3 and sub-category B6_a1 and B6_a2 single-mode fibres . 10
8.3 Category B1.2 single-mode fibres . 10
8.4 Category B2 single-mode fibres . 10
8.5 Category B4 and B5 single-mode fibres . 11
9 Results . 11
9.1 Report the following information with each measurement: . 11
9.2 The following information shall be available upon request: . 11
10 Specification information . 11
Annex A (normative) Requirements specific to method A, phase-shift . 12
Annex B (normative) Requirements specific to method B, spectral group delay in the
time domain . 17
Annex C (normative) Requirements specific to method C, differential phase-shift . 21
Annex D (normative) Chromatic dispersion fitting . 26
Bibliography . 28

Figure A.1 – Chromatic dispersion measurement set, multiple laser system (typical) . 13
Figure A.2 – Typical delay and dispersion curves . 13
Figure A.3 – Chromatic dispersion measurement set, LED system (typical) . 15
Figure B.1 – Block diagram, fibre Raman laser system . 18
Figure B.2 – Block diagram, multiple laser diode system . 18

60793-1-42 © IEC:2013 – 3 –
Figure C.1 – Chromatic differential phase dispersion measurement set, multiple laser
system . 22
Figure C.2 – Chromatic differential phase dispersion measurement set, LED system . 23
Figure C.3 – Chromatic dispersion measurement set, differential phase by dual
wavelength method . 23
Figure C.4 – Chromatic dispersion measurement set, differential phase by double
demodulation . 24

Table D.1 – Definition of fit types and fit coefficients; equations for group delay and
dispersion coefficient . 26
Table D.2 – Slope equations . 26
Table D.3 – Zero-dispersion wavelength and slope equations . 27

– 4 – 60793-1-42 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 1-42: Measurement methods and test procedures –
Chromatic dispersion
FOREWORD
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