1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Optical fibresPart 1-45: Measurement methods and test procedures Mode field diameter (IEC 60793-1-45:2017)BS EN IEC 60793-1-45:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 60793-1-45 February 2018 ICS 33
2、.180.10 Supersedes EN 60793-1-45:2003 English Version Optical fibres - Part 1-45: Measurement methods and test procedures - Mode field diameter (IEC 60793-1-45:2017) Fibre optiques - Partie 1-45: Mthodes de mesure et procdures dessai - Diamtre du champ de mode (IEC 60793-1-45:2017) Lichtwellenleiter
3、 - Teil 1-45: Messmethoden - Messung des Modenfelddurchmessers (IEC 60793-1-45:2017) This European Standard was approved by CENELEC on 2017-12-14. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status
4、 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,
5、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, Bel
6、gium, 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, Serbia, Slovakia, Slovenia, Spai
7、n, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights
8、 of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 60793-1-45:2018 E National forewordThis British Standard is the UK implementation of EN IEC 60793145:2018. It is identical to IEC 60793145:2017. It supersedes BS EN 60793145:2003, which is withdrawn
9、.The UK participation in its preparation was entrusted to Technical Committee GEL/86/1, Optical fibres and cables.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract.
10、 Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 92160 5ICS 33.180.10Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authori
11、ty of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN IEC 60793145:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 60793-1-45 February 2018 ICS 33.180.10 Supersedes EN 60793-1-45:2003 E
12、nglish Version Optical fibres - Part 1-45: Measurement methods and test procedures - Mode field diameter (IEC 60793-1-45:2017) Fibre optiques - Partie 1-45: Mthodes de mesure et procdures dessai - Diamtre du champ de mode (IEC 60793-1-45:2017) Lichtwellenleiter - Teil 1-45: Messmethoden - Messung de
13、s Modenfelddurchmessers (IEC 60793-1-45:2017) This European Standard was approved by CENELEC on 2017-12-14. 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 alt
14、eration. 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 languag
15、e 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 Cz
16、ech 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
17、United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CENELEC All rights of exploitation in any form and by any
18、 means reserved worldwide for CENELEC Members. Ref. No. EN IEC 60793-1-45:2018 E BS EN IEC 60793145:2018EN IEC 60793-1-45:2018 (E) 2 European foreword The text of document 86A/1758/CDV, future edition 2 of IEC 60793-1-45, prepared by IEC/SC 86A: “Fibres and cables“, of IEC/TC 86: “Fibre optics“ was
19、submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 60793-1-45:2018. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2018-09-14 latest date by wh
20、ich the national standards conflicting with the document have to be withdrawn (dow) 2020-12-14 This document supersedes EN 60793-1-45:2003. 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
21、identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60793-1-45:2017 was approved by CENELEC as a European Standard without any modification. BS EN IEC 60793145:2018EN IEC 60793-1-45:2018 (E) 3 Annex ZA (normative) Normative references to internati
22、onal 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 edi
23、tion 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
24、 is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60793-1-40 (mod) 2001 Optical fibres - Part 1-40: Measurement methods and test procedures - Attenuation EN 60793-1-40 2003 IEC 60793-2 - Optical fibres - Part 2: Product specifications. - - BS EN IEC 60793145:2018 2 IEC 60793-
25、1-45:2017 IEC 2017 CONTENTS FOREWORD . 5 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 4 General consideration about mode field diameter 7 5 Reference test method 8 6 Apparatus 8 6.1 General . 8 6.2 Light source 8 6.3 Input optics . 9 6.4 Input positioner . 9 6.5 Cladding mode strippe
26、r . 9 6.6 High-order mode filter . 9 6.7 Output positioner 9 6.8 Output optics 9 6.9 Detector 9 6.10 Computer 9 7 Sampling and specimens . 10 7.1 Specimen length . 10 7.2 Specimen end face . 10 8 Procedure 10 9 Calculations . 10 9.1 Basic equations 10 9.2 Method A Direct far-field scan 10 9.3 Method
27、 B Variable aperture in the far field . 11 9.4 Method C Near-field scan . 11 10 Results 12 10.1 Information available with each measurement . 12 10.2 Information available upon request . 12 11 Specification information . 12 Annex A (normative) Requirements specific to method A Mode field diameter by
28、 direct far-field scan . 14 A.1 Apparatus . 14 A.1.1 General . 14 A.1.2 Scanning detector assembly Signal detection electronics . 14 A.1.3 Computer. 14 A.2 Procedure . 15 A.3 Calculations 15 A.3.1 Determine folded power curve . 15 A.3.2 Compute the top (T) and bottom (B) integrals of Equation (1) 15
29、 A.3.3 Complete the calculation . 15 A.4 Sample data . 16 Annex B (normative) Requirements specific to method B Mode field diameter by variable aperture in the far field 17 B.1 Apparatus . 17 BS EN IEC 60793145:2018IEC 60793-1-45:2017 IEC 2017 3 B.1.1 General . 17 B.1.2 Output variable aperture asse
30、mbly 17 B.1.3 Output optics system . 18 B.1.4 Detector assembly and signal detection electronics . 18 B.2 Procedure . 18 B.3 Calculations 18 B.3.1 Determine complementary aperture function 18 B.3.2 Complete the integration 19 B.3.3 Complete the calculation . 19 B.4 Sample data . 19 Annex C (normativ
31、e) Requirements specific to method C Mode field diameter by near-field scan 20 C.1 Apparatus . 20 C.1.1 General . 20 C.1.2 Magnifying output optics 20 C.1.3 Scanning detector 20 C.1.4 Detection electronics . 21 C.2 Procedure . 21 C.3 Calculations 21 C.3.1 Calculate the centroid 21 C.3.2 Fold the int
32、ensity profile 22 C.3.3 Compute the integrals 22 C.3.4 Complete the calculation . 22 C.4 Sample data . 23 Annex D (normative) Requirements specific to method D Mode field diameter by optical time domain reflectometer (OTDR) 24 D.1 General . 24 D.2 Apparatus . 24 D.2.1 OTDR 24 D.2.2 Optional auxiliar
33、y switches 24 D.2.3 Optional computer . 25 D.2.4 Test sample . 25 D.2.5 Reference sample 25 D.3 Procedure . 25 D.3.1 Orientation and notation 25 D.4 Calculations 26 D.4.1 Reference fibre mode field diameter 26 D.4.2 Computation of the specimen mode field diameter . 27 D.4.3 Validation 27 Annex E (in
34、formative) Sample data sets and calculated values 29 E.1 General . 29 E.2 Method A Mode field diameter by direct far-field scan 29 E.3 Method B Mode field diameter by variable aperture in the far field . 30 E.4 Method C Mode field diameter by near-field scan . 30 Figure 1 Transform relationships bet
35、ween measurement results 8 Figure A.1 Far-field measurement set 14 Figure B.1 Variable aperture by far-field measurement set . 17 BS EN IEC 60793145:2018 4 IEC 60793-1-45:2017 IEC 2017 Figure C.1 Near-field measurement set-ups . 20 Figure D.1 Optical switch arrangement 25 Figure D.2 View from refere
36、nce fibre A 26 Figure D.3 View from reference fibre B 26 Figure D.4 Validation example Comparison of methods . 27 Table E.1 Sample data, method A Mode field diameter by direct far-field scan 29 Table E.2 Sample data set, method B Mode field diameter by variable aperture in the far field . 30 Table E
37、.3 Sample data set, method C Mode field diameter by near-field scan . 30 BS EN IEC 60793145:2018IEC 60793-1-45:2017 IEC 2017 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRES Part 1-45: Measurement methods and test procedures Mode field diameter FOREWORD 1) The International Electrotechni
38、cal 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
39、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 Co
40、mmittee 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
41、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 al
42、l 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 r
43、esponsible 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 diver
44、gence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC m
45、arks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 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 expe
46、rts 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 P
47、ublication 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 P
48、ublication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60793-1-45 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical committee 86: Fibre optics. This second edition cancels an
49、d replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) improvement of the description of measurement details for B6 fibre; b) correction of Equations (1), (2),(5) and (6); c) correction of Table E.1, Table E.2 and Table E.3. BS EN IEC 60793145:2018 6 IEC 60793-1-45:2017 IEC 2017 The text o
