1、BSI Standards PublicationOptical fibresPart 2-50: Product specifications Sectional specification for class B single-mode fibresBS EN 60793-2-50:2016National forewordThis British Standard is the UK implementation of EN 60793-2-50:2016. It is identical to IEC 60793-2-50:2015. It supersedes BS EN 60793
2、-2-50:2013which is withdrawn.The UK participation in its preparation was entrusted by Technical Com-mittee GEL/86, Fibre optics, to Subcommittee GEL/86/1, Optical fibres and cables.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does
3、not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 83667 1ICS 33.180.10Compliance with a British Standard cannot confer immunity fromlegal ob
4、ligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60793-2-50:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60793-2-50 Februa
5、ry 2016 ICS 33.180.10 Supersedes EN 60793-2-50:2013 English Version Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres (IEC 60793-2-50:2015) Fibres optiques - Partie 2-50: Spcifications de produits - Spcification intermdiaire pour les fibres u
6、nimodales de classe B (IEC 60793-2-50:2015) Lichtwellenleiter - Teil 2-50: Produktspezifikationen - Rahmenspezifikation fr Einmodenfasern der Kategorie B (IEC 60793-2-50:2015) This European Standard was approved by CENELEC on 2015-12-24. CENELEC members are bound to comply with the CEN/CENELEC Inter
7、nal 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
8、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 offi
9、cial 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,
10、Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENEL
11、EC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60793-2-50:2016 E BS EN 60793-2-50:2016EN 60793-2-50:2016 2 European foreword The text of document 86A/1571/CDV, future edi
12、tion 5 of IEC 60793-2-50, 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 60793-2-50:2016. The following dates are fixed: latest date by which the document has to be implemented at national level by publi
13、cation of an identical national standard or by endorsement (dop) 2016-09-24 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-12-24 This document supersedes EN 60793-2-50:2013. Attention is drawn to the possibility that some of the elements of
14、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 60793-2-50:2015 was approved by CENELEC as a European Standard without any modification. In
15、 the official version, for Bibliography, the following note has to be added for the standard indicated : IEC 60794-2 NOTE Harmonized as EN 60794-2. BS EN 60793-2-50:2016EN 60793-2-50:2016 3 Annex ZA (normative) Normative references to international publications with their corresponding European publ
16、ications 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
17、. NOTE 1 When 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.eu. Publication Year Title EN/HD Ye
18、ar IEC 60793-1 series Optical fibres - Part 1: Measurement methods and test procedures EN 60793-1 series IEC 60793-1-1 - Optical fibres - Part 1-1: Measurement methods and test procedures - General and guidance EN 60793-1-1 - IEC 60793-1-20 - Optical fibres - Part 1-20: Measurement methods and test
19、procedures - Fibre geometry EN 60793-1-20 - IEC 60793-1-21 - Optical fibres - Part 1-21: Measurement methods and test procedures - Coating geometry EN 60793-1-21 - IEC 60793-1-22 - Optical fibres - Part 1-22: Measurement methods and test procedures - Length measurement EN 60793-1-22 - IEC 60793-1-30
20、 - Optical fibres - Part 1-30: Measurement methods and test procedures - Fibre proof test EN 60793-1-30 - IEC 60793-1-31 - Optical fibres - Part 1-31: Measurement methods and test procedures - Tensile strength EN 60793-1-31 - IEC 60793-1-32 - Optical fibres - Part 1-32: Measurement methods and test
21、procedures - Coating strippability EN 60793-1-32 - IEC 60793-1-33 - Optical fibres - Part 1-33: Measurement methods and test procedures - Stress corrosion susceptibility EN 60793-1-33 - IEC 60793-1-34 - Optical fibres - Part 1-34: Measurement methods and test procedures - Fibre curl EN 60793-1-34 -
22、BS EN 60793-2-50:2016EN 60793-2-50:2016 4 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 60793-1-42 - Optical fibres - Part 1-42: Measurement methods and test procedures - Chromatic
23、dispersion EN 60793-1-42 - IEC 60793-1-44 - Optical fibres - Part 1-44: Measurement methods and test procedures - Cut-off wavelength EN 60793-1-44 - IEC 60793-1-45 - Optical fibres - Part 1-45: Measurement methods and test procedures - Mode field diameter EN 60793-1-45 - IEC 60793-1-46 - Optical fib
24、res - Part 1-46: Measurement methods and test procedures - Monitoring of changes in optical transmittance EN 60793-1-46 - IEC 60793-1-47 - Optical fibres - Part 1-47: Measurement methods and test procedures - Macrobending loss EN 60793-1-47 - IEC 60793-1-48 - Optical fibres - Part 1-48: Measurement
25、methods and test procedures - Polarization mode dispersion EN 60793-1-48 - IEC 60793-1-50 - Optical fibres - Part 1-50: Measurement methods and test procedures - Damp heat (steady state) tests EN 60793-1-50 - IEC 60793-1-51 - Optical fibres - Part 1-51: Measurement methods and test procedures - Dry
26、heat (steady state) tests EN 60793-1-51 - IEC 60793-1-52 - Optical fibres - Part 1-52: Measurement methods and test procedures - Change of temperature tests EN 60793-1-52 - IEC 60793-1-53 - Optical fibres - Part 1-53: Measurement methods and test procedures - Water immersion tests EN 60793-1-53 - IE
27、C 60793-2 - Optical fibres - Part 2: Product specifications - General EN 60793-2 - IEC 60794-3 - Optical fibre cables - Part 3: Outdoor cables - Sectional specification EN 60794-3 - IEC/TR 62316 - Guidance for the interpretation of OTDR backscattering traces - - BS EN 60793-2-50:2016 2 IEC 60793-2-5
28、0:2015 IEC 2015 CONTENTS FOREWORD . 5 1 Scope 7 2 Normative references 7 3 Terms and definitions 8 4 Abbreviations and symbols 9 5 Specifications 9 5.1 General . 9 5.2 Dimensional requirements . 9 5.3 Mechanical requirements 10 5.4 Transmission requirements . 11 5.5 Environmental requirements . 12 5
29、.5.1 General . 12 5.5.2 Optical environmental requirements Attenuation . 13 5.5.3 Mechanical environmental requirements 13 Annex A (normative) Family specification for category B1.1 single-mode fibres . 15 A.1 General . 15 A.2 Dimensional requirements . 15 A.3 Mechanical requirements 15 A.4 Transmis
30、sion requirements . 16 A.5 Environmental requirements . 16 Annex B (normative) Family specification for category B1.2 single-mode fibres . 17 B.1 General . 17 B.2 Dimensional requirements . 17 B.3 Mechanical requirements 17 B.4 Transmission requirements . 18 B.5 Environmental requirements . 18 Annex
31、 C (normative) Family specification for category B1.3 single-mode fibres . 19 C.1 General . 19 C.2 Dimensional requirements . 19 C.3 Mechanical requirements 19 C.4 Transmission requirements . 20 C.5 Hydrogen ageing for category B1.3 . 20 C.6 Environmental requirements . 21 Annex D (normative) Family
32、 specification for category B2 single-mode fibres 22 D.1 General . 22 D.2 Dimensional requirements . 22 D.3 Mechanical requirements 22 D.4 Transmission requirements . 23 D.4.1 General . 23 D.4.2 Chromatic dispersion coefficient requirement for sub-category B2_a fibres . 23 D.4.3 Chromatic dispersion
33、 coefficient requirement for sub-category B2_b fibres . 24 D.5 Environmental requirements . 24 Annex E (normative) Family specification for category B4 single-mode fibres 25 E.1 General . 25 BS EN 60793-2-50:2016IEC 60793-2-50:2015 IEC 2015 3 E.2 Dimensional requirements . 25 E.3 Mechanical requirem
34、ents 25 E.4 Transmission requirements . 26 E.4.1 General . 26 E.4.2 Chromatic dispersion coefficient limits for sub-category B4_c fibres 26 E.4.3 Chromatic dispersion coefficient limits for sub-category B4_d fibres 27 E.4.4 Chromatic dispersion coefficient limits for sub-category B4_e fibres 27 E.5
35、Environmental requirements . 27 Annex F (normative) Family specification for category B5 single-mode fibres . 28 F.1 General . 28 F.2 Dimensional requirements . 28 F.3 Mechanical requirements 28 F.4 Transmission requirements . 29 F.4.1 General . 29 F.4.2 Chromatic dispersion coefficient for category
36、 B5 fibres 29 F.5 Environmental requirements . 30 Annex G (normative) Family specification for category B6 single-mode fibres 31 G.1 General . 31 G.2 Dimensional requirements . 31 G.3 Mechanical requirements 32 G.4 Transmission requirements . 32 G.5 Environmental requirements . 33 Annex H (informati
37、ve) System design information for category B4 single-mode fibres 34 H.1 General . 34 H.2 One standard deviation limits for sub-category B4_d fibres . 34 H.3 One standard deviation limits for sub-category B4_e fibres . 35 Annex I (informative) Map from IEC nomenclature to ITU-T recommendations . 36 B
38、ibliography 37 Figure H.1 Sub-category B4_d chromatic dispersion coefficient limits 35 Figure H.2 Sub-category B4_e chromatic dispersion coefficient limits 35 Table 1 Dimensional attributes and measurement methods 9 Table 2 Dimensional requirements common to all category B fibres . 10 Table 3 Mechan
39、ical attributes and test methods . 10 Table 4 Mechanical requirements common to all class B fibres 11 Table 5 Transmission attributes and measurement methods 11 Table 6 Transmission, requirements common to all class B fibres 12 Table 7 Additional transmission attributes required in the family specif
40、ications 12 Table 8 Environmental exposure tests . 12 Table 9 Attributes measured in environmental exposure tests 12 Table 10 Change in attenuation for environmental tests . 13 Table 11 Coating strip force for environmental tests . 13 Table 12 Tensile strength for environmental tests 13 Table 13 Str
41、ess corrosion susceptibility for environmental tests . 14 Table A.1 Dimensional requirements specific to category B1.1 fibres . 15 BS EN 60793-2-50:2016 4 IEC 60793-2-50:2015 IEC 2015 Table A.2 Mechanical requirements specific to category B1.1 fibres 15 Table A.3 Transmission requirements specific t
42、o category B1.1 fibres . 16 Table B.1 Dimensional requirements specific to category B1.2 fibres . 17 Table B.2 Mechanical requirements specific to category B1.2 fibres 18 Table B.3 Transmission requirements specific to category B1.2 fibres . 18 Table C.1 Dimensional requirements specific to category
43、 B1.3 fibres . 19 Table C.2 Mechanical requirements specific to category B1.3 fibres 19 Table C.3 Transmission requirements specific to category B1.3 fibres . 20 Table D.1 Dimensional requirements specific to category B2 fibres 22 Table D.2 Mechanical requirements specific to category B2 fibres . 23
44、 Table D.3 Transmission requirements specific to category B2 fibres 23 Table E.1 Dimensional requirements specific to category B4 fibres 25 Table E.2 Mechanical requirements specific to category B4 fibres . 26 Table E.3 Transmission requirements specific to category B4 fibres 26 Table F.1 Dimensiona
45、l requirements specific to category B5 fibres 28 Table F.2 Mechanical requirements specific to category B5 fibres 29 Table F.3 Transmission requirements specific to category B5 fibres 29 Table G.1 Dimensional requirements specific to category B6 fibres . 32 Table G.2 Mechanical requirements specific
46、 to category B6 fibres . 32 Table G.3 Transmission requirements specific to category B6 fibres 33 Table H.1 Examples for min= 1 530 nm and max= 1 565 nm 34 Table I.1 Map of IEC to ITU . 36 BS EN 60793-2-50:2016IEC 60793-2-50:2015 IEC 2015 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL FIBRES
47、Part 2-50: Product specifications Sectional specification for class B single-mode fibres 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
48、 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
49、 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 f
