EN 60793-1-47-2018 en Optical fibres - Part 1-47 Measurement methods and test procedures - Macrobending loss.pdf

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1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Optical fibresPart 1-47: Measurement methods and test procedures - Macrobending lossBS EN IEC 60793-1-47:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 60793-1-47 February 2018 ICS 33.180.10 Supersedes EN

2、60793-1-47:2009 English Version Optical fibres - Part 1-47: Measurement methods and test procedures - Macrobending loss (IEC 60793-1-47:2017) Fibres optiques - Partie 1-47: Mthodes de mesure et procdures dessai - Pertes par macrocourbures (IEC 60793-1-47:2017) Lichtwellenleiter - Teil 1-47: Messmeth

3、oden und Prfverfahren - Makrobiegeverlust (IEC 60793-1-47:2017) This European Standard was approved by CENELEC on 2017-11-15. 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 standa

4、rd 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

5、 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, Croat

6、ia, 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, Spain, Sweden, Switzerlan

7、d, 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 of exploitation in a

8、ny form and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 60793-1-47:2018 E National forewordThis British Standard is the UK implementation of EN IEC 60793147:2018. It is identical to IEC 60793147:2017. It supersedes BS EN 60793147:2009, which is withdrawn.The UK participation

9、 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. Users are responsibl

10、e for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 93416 2ICS 01.040.01; 33.180.10; 35.240.30; 25.040.01Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under

11、 the authority of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN IEC 60793147:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IEC 60793-1-47 February 2018 ICS 33.180.10 Supersedes EN 60793

12、-1-47:2009 English Version Optical fibres - Part 1-47: Measurement methods and test procedures - Macrobending loss (IEC 60793-1-47:2017) Fibres optiques - Partie 1-47: Mthodes de mesure et procdures dessai - Pertes par macrocourbures (IEC 60793-1-47:2017) Lichtwellenleiter - Teil 1-47: Messmethoden

13、und Prfverfahren - Makrobiegeverlust (IEC 60793-1-47:2017) This European Standard was approved by CENELEC on 2017-11-15. 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 wi

14、thout 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

15、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, C

16、yprus, 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, Spain, Sweden, Switzerland, Tu

17、rkey 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 of exploitation in any fo

18、rm and by any means reserved worldwide for CENELEC Members. Ref. No. EN IEC 60793-1-47:2018 E BS EN IEC 60793147:2018EN IEC 60793-1-47:2018 (E) 2 European foreword The text of document 86A/1823/FDIS, future edition 2 of IEC 60793-1-47, prepared by IEC/SC 86A “Fibres and cables“, of IEC/TC 86 “Fibre

19、optics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 60793-1-47:2018. 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) 2018-08-15 lates

20、t date by which the national standards conflicting with the document have to be withdrawn (dow) 2020-11-15 This document supersedes EN 60793-1-47:2009. 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 resp

21、onsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60793-1-47:2017 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 standa

22、rds indicated: IEC 60793-1-40 NOTE Harmonized as EN 60793-1-40. IEC 60793-1-46 NOTE Harmonized as EN 60793-1-46. IEC 60793-2-50 NOTE Harmonized as EN 60793-2-50. BS EN IEC 60793147:2018EN IEC 60793-1-47:2018 (E) 3 Annex ZA (normative) Normative references to international publications with their cor

23、responding 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

24、(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.cenelec.

25、eu. Publication Year Title EN/HD Year IEC 60793 series Optical fibres - series IEC 60793-1-1 2017 Optical fibres - Part 1-1: Measurement methods and test procedures - General and guidance EN 60793-1-1 2017 IEC 60793-2 - Optical fibres - Part 2: Product specifications - General EN 60793-2 - IEC 60793

26、-2-10 - EN 60793-2-10 - IEC 61280-1-4 - Fibre optic communication subsystem test procedures - Part 1-4: General communication subsystems - Light source encircled flux measurement method EN 61280-1-4 - IEC 61280-4-1 - Fibre optic communication subsystem test procedures - Part 4-1: Installed cable pla

27、nt - Multimode attenuation measurement EN 61280-4-1 - BS EN IEC 60793147:2018 2 IEC 60793-1-47:2017 IEC 2017 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope 8 2 Normative references 8 3 Terms and definitions 9 4 Apparatus 9 4.1 Method A Fibre winding . 9 4.2 Method B Quarter circle bends . 9 4.3 Inpu

28、t system . 10 4.3.1 Optical source . 10 4.3.2 Optical launch arrangement . 10 4.4 Output system and detection . 12 4.4.1 Optical divider . 12 4.4.2 Optical detector . 12 4.4.3 Optical detection assembly 13 4.4.4 Signal processing 13 5 Specimen 13 5.1 Specimen length . 13 5.1.1 Method A Fibre winding

29、 13 5.1.2 Method B Quarter circle bends 13 5.2 Specimen end face . 13 6 Procedure 13 6.1 Method A Fibre winding . 13 6.1.1 General consideration 13 6.1.2 Single-mode fibres . 14 6.1.3 Multimode (A1) fibres 15 6.2 Method B Quarter circle bends . 15 7 Calculations . 17 8 Results 17 8.1 Information ava

30、ilable with each measurement . 17 8.2 Information available upon request . 17 9 Specification information . 17 Annex A (normative) Change in transmittance by transmitted power technique 19 A.1 Apparatus . 19 A.1.1 General . 19 A.2 Procedure . 20 A.3 Calculations 20 Annex B (normative) Cut-back techn

31、ique . 22 B.1 General . 22 B.2 Apparatus . 22 B.2.1 General apparatus for all fibres 22 B.3 Procedure . 22 B.4 Calculations 23 Annex C (normative) Requirements for the optical source characteristics for A1 multimode measurement 24 BS EN IEC 60793147:2018IEC 60793-1-47:2017 IEC 2017 3 C.1 Encircled f

32、lux (EF) 24 C.2 Limits on encircled flux . 24 Annex D (informative) Small bend radius phenomena 27 D.1 General . 27 D.2 Interference between propagating and radiating modes 27 D.3 Polarization effects . 29 D.4 High power damage 29 Annex E (informative) Parallel plate (2-point) macrobend loss approxi

33、mation . 30 E.1 General . 30 E.2 Specimen 30 E.3 Apparatus . 30 E.3.1 General . 30 E.3.2 Stepper motor control 31 E.3.3 Movable plate 31 E.3.4 Fixed plate . 31 E.4 Procedure . 32 E.5 Calculation 32 E.6 Results . 32 E.7 Comparison of results with normative test . 33 Bibliography 35 Figure 1 Quarter c

34、ircle guide groove in plate 9 Figure 2 General launch arrangement 10 Figure 3 Lens system . 11 Figure 4 Launch fibre . 11 Figure 5 Mode scrambler (for A4 fibre) . 12 Figure 6 Multiple bends using stacked plates . 16 Figure A.1 Measurement of change in optical transmittance using reference specimen 1

35、9 Figure A.2 Measurement of change in optical transmittance using stabilized source 20 Figure B.1 Arrangement of equipment to perform loss measurement at one specified wavelength . 22 Figure B.2 Arrangement of equipment used to obtain a loss spectrum 22 Figure C.1 Encircled flux template example . 2

36、5 Figure D.1 Loss curves versus curve fits 28 Figure E.1 Schematic of possible (two-point bend) apparatus 31 Figure E.2 Example of applying an exponential fit to the spectral data of a B6_a2 fibre 33 Figure E.3 Example of 2-point bend test data for a B6_a2 fibre 33 Table 1 Launch conditions for A2 t

37、o A4 fibres 12 Table C.1 Threshold tolerance . 25 Table C.2 EF requirements for 50 m core fibre cabling at 850 nm 26 Table C.3 EF requirements for 50 m core fibre cabling at 1 300 nm . 26 Table C.4 EF requirements for 62,5 m core fibre cabling at 850 nm . 26 Table C.5 EF requirements for 62,5 m core

38、 fibre cabling at 1 300 nm 26 BS EN IEC 60793147:2018 4 IEC 60793-1-47:2017 IEC 2017 Table E.1 Comparison of parallel plate (2-point) versus method A macrobend loss measurement for a B6_b3 fibre at 10 mm diameter (ratio of mandrel / 2-point) 34 BS EN IEC 60793147:2018IEC 60793-1-47:2017 IEC 2017 5 I

39、NTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRES Part 1-47: Measurement methods and test procedures Macrobending loss FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Nati

40、onal 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, Publi

41、cly 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-governm

42、ental 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

43、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

44、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 u

45、niformity, 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.

46、 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should e

47、nsure 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 o

48、f 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

49、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 60793-1-47 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical committee 86: Fibre