EN 60793-1-42:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic dispersion (IEC 60793-1-42:2007 (EQV) + corrigendum Jun. 2007)Fibres optiques - Partie 1-42: Méthodes de mesure et procédures d'essai - Dispersion chromatique (IEC 60793-1-42:2007 (EQV) + corrigendum Jun. 2007)Lichtwellenleiter - Teil 1-42: Messmethoden und Prüfverfahren - Chromatische Dispersion (IEC 60793-1-42:2007 (EQV) + corrigendum Jun. 2007)Ta slovenski standard je istoveten z:EN 60793-1-42:2007SIST EN 60793-1-42:2007en,de33.180.10Fibres and cablesICS:SIST EN 60793-1-42:20041DGRPHãþDSLOVENSKI
STANDARDSIST EN 60793-1-42:200701-november-2007

EUROPEAN STANDARD EN 60793-1-42 NORME EUROPÉENNE
EUROPÄISCHE NORM June 2007
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
© 2007 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60793-1-42:2007 E
ICS 33.180.10 Supersedes EN 60793-1-42:2002
English version
Optical fibres -
Part 1-42: Measurement methods and test procedures -
Chromatic dispersion (IEC 60793-1-42:2007 + corrigendum 2007)
Fibres optiques -
Partie 1-42: Méthodes de mesure
et procédures d'essai -
Dispersion chromatique (CEI 60793-1-42:2007 + corrigendum 2007)
Lichtwellenleiter -
Teil 1-42: Messmethoden
und Prüfverfahren -
Chromatische Dispersion (IEC 60793-1-42:2007 + Corrigendum 2007)
This European Standard was approved by CENELEC on 2007-05-01. 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, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

Foreword The text of document 86A/1136/FDIS, future edition 2 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 was approved by CENELEC as EN 60793-1-42 on 2007-05-01. This European Standard supersedes EN 60793-1-42:2002. The main changes in EN 60793-1-42:2007 concern the addition of a new Annex E on chromatic dispersion fitting and the applicability to A4 fibres. This standard is to be used in conjunction with EN 60793-1-1. 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)
2008-02-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2010-05-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60793-1-42:2007 and its corrigendum June 2007 was approved by CENELEC as a European Standard without any modification. __________

- 3 - EN 60793-1-42:2007 Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application 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
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 2002 Optical fibres -
Part 1-1: Measurement methods and test procedures - General and guidance EN 60793-1-1 2003
IEC 60793-1-41 -1) Optical fibres -
Part 1-41: Measurement methods and test procedures - Bandwidth EN 60793-1-41 20032)
1) Undated reference. 2) Valid edition at date of issue.

INTERNATIONAL STANDARD IECCEI NORME INTERNATIONALE60793-1-42Second editionDeuxième édition2007-04 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 V Commission Electrotechnique InternationaleInternational Electrotechnical CommissionPRICE CODE CODE PRIX For price, see current cataloguePour prix, voir catalogue en vigueur

– 2 – 60793-1-42 © IEC:2007
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 3.4 Method D, interferometry.8 4 Reference test methods.8 4.1 Category A1 and category A4f, A4g and A4h multimode fibres.8 4.2 Class B single-mode fibres.8 5 Apparatus.8 5.1 Launch optics.8 5.2 High-order mode filter (single-mode).8 5.3 Input positioning apparatus.9 5.4 Output positioning apparatus.9 5.5 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.10 8.1 Category A1 and A4f, A4g, A4h
multimode and B1.1 and B1.3 single-mode fibres.10 8.2 Category B1.2 single-mode fibres.10 8.3 Category B2 single-mode fibres.10 8.4 Category B4 and B5 single-mode fibres.11 9 Results.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)
Requirements specific to method D, interferometry.26 Annex E (normative)
Chromatic dispersion fitting.30
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:2007 – 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 Figure D.1 – Fibre chromatic dispersion test set – Interferometry by fibre reference path.28 Figure D.2 – Fibre chromatic dispersion test set – Interferometry by air reference path.28 Figure D.3 – Examples of delay data.29
Table E.1 – Definition of fit types and fit coefficients; equations
for group delay and dispersion coefficient.30 Table E.2 – Slope equations.30 Table E.3 – Zero-dispersion wavelength and slope equations.31

– 4 – 60793-1-42 © IEC:2007 INTERNATIONAL ELECTROTECHNICAL COMMISSION ___________
OPTICAL FIBRES –
Part 1-42: Measurement methods and test procedures – Chromatic dispersion
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60793-1-42 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical commit
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