1、 IEC 60793-1-47Edition 3.0 2009-03INTERNATIONAL STANDARD Optical fibres Part 1-47:Measurement methods and test procedures Macrobending loss IEC 60793-1-47:2009(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYR
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9、ON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 60793-1-47Edition 3.0 2009-03INTERNATIONAL STANDARD Optical fibres Part 1-47:Measurement methods and test procedures Macrobending loss INTERNATIONAL ELECTROTECHNICAL COMMISSION PICS 33.180.10 PRICE
10、CODEISBN 2-8318-1033-5 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60793-1-47 IEC:2009(E)CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6
11、3 Specimen.7 3.1 Specimen length.7 3.1.1 Method A Fibre winding.7 3.1.2 Method B Quarter circle bends.7 3.2 Specimen end face.7 4 Apparatus.7 4.1 Method A Fibre winding.7 4.2 Method B Quarter circle bends.7 5 Procedure.8 5.1 Method A Fibre winding.8 5.1.1 General.8 5.1.2 Single-mode fibres.9 5.1.3 M
12、ultimode(A1)fibres.10 5.2 Method B Quarter circle bends.10 6 Calculations.12 7 Results.12 7.1 Information available with each measurement.12 7.2 Information available upon request.12 8 Specification information.13 Annex A(informative)Small bend radius phenomena.14 Bibliography.16 Figure 1 Quarter ci
13、rcle guide groove in plate.8 Figure 2 Multiple bends using stacked plates.11 Figure A.1 Loss curves versus curve fits.14 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60793-1-47 IEC:2009(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION
14、_ 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 National Committees).The object of IEC is to promo
15、te 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(hereafte
16、r 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
