1、BSI Standards PublicationFibre optic interconnecting devices and passive components Fibre optic passive chromatic dispersion compensatorsPart 1: Generic specificationBS EN 61978-1:2014National forewordThis British Standard is the UK implementation of EN 61978-1:2014. It is identical to IEC 61978-1:2
2、014. It supersedes BS EN 61978-1:2010 which is withdrawn.The UK participation in its preparation was entrusted by TechnicalCommittee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre opticinterconnecting devices and passive components.A list of organizations represented on this committee can be
3、obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 82164 6ICS 33.180.01Compliance w
4、ith a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61978-1:2014EUROPEAN ST
5、ANDARD NORME EUROPENNE EUROPISCHE NORM EN 61978-1 August 2014 ICS 33.180.01 Supersedes EN 61978-1:2010 English Version Fibre optic interconnecting devices and passive components - Fibre optic passive chromatic dispersion compensators - Part 1: Generic specification (IEC 61978-1:2014) Dispositifs din
6、terconnexion et composants passifs fibres optiques - Compensateurs de dispersion chromatique passifs fibres optiques - Partie 1: Spcification gnrique (CEI 61978-1:2014) Lichtwellenleiter - Verbindungselemente und passive Bauteile - Passive Lichtwellenleiter - Kompensatoren mit chromatischer Dispersi
7、on - Teil 1: Fachgrundspezifikation (IEC 61978-1:2014) This European Standard was approved by CENELEC on 2014-06-27. 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 withou
8、t 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 othe
9、r 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, Cypru
10、s, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
11、 United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of exploitation in any form and by any me
12、ans reserved worldwide for CENELEC Members. Ref. No. EN 61978-1:2014 E BS EN 61978-1:2014EN 61978-1:2014 - 2 - Foreword The text of document 86B/3639/CDV, future edition 3 of IEC 61978-1, prepared by SC 86B “Fibre optic interconnecting devices and passive components“ of IEC/TC 86 “Fibre optics“ was
13、submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61978-1:2014. 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) 2015-03-27 latest date by which the
14、 national standards conflicting with the document have to be withdrawn (dow) 2017-06-27 This document supersedes EN 61978-1:2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for
15、 identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61978-1:2014 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 standards indicated:
16、 IEC 60068 Series NOTE Harmonized as EN 60068 Series. IEC 60869-1 NOTE Harmonized as EN 60869-1. IEC 60874 Series NOTE Harmonized as EN 60874 Series. IEC 60974 Series NOTE Harmonized as EN 60974 Series. IEC 61073-1 NOTE Harmonized as EN 61073-1. IEC 61300-1 NOTE Harmonized as EN 61300-1. IEC 61300-2
17、 Series NOTE Harmonized as EN 61300-2 Series. IEC 61300-3 Series NOTE Harmonized as EN 61300-3 Series. IEC 61753 Series NOTE Harmonized as EN 61753 Series. IEC 61754 Series NOTE Harmonized as EN 61754 Series. IEC 61754-4 NOTE Harmonized as EN 61754-4. IEC 61754-13 NOTE Harmonized as EN 61754-13. IEC
18、 61754-15 NOTE Harmonized as EN 61754-15. IEC 62005 Series NOTE Harmonized as EN 62005 Series. BS EN 61978-1:2014- 3 - EN 61978-1:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part,
19、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. NOTE 1 When an International Publication has been mod
20、ified 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 Year IEC 60027 series Letter symbols to be used in electri
21、cal technology - - IEC 60050-731 - International Electrotechnical Vocabulary (IEV) - Chapter 731: Optical fibre communication - - IEC 60617 series - Standard data element types with associated classification scheme for electric components - - IEC 60695-11-5 - Fire hazard testing - Part 11-5: Test fl
22、ames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance EN 60695-11-5 - IEC 60793-2-50 2012 Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres EN 60793-2-50 2013 IEC 60825 series - Radiation safety of laser prod
23、ucts, equipment classification, requirements and users guide EN 60825 series - IEC 61300 series Fibre optic interconnecting devices and passive components - Basic test and measurement procedures EN 61300 series - IEC 61300-3-38 - Fibre optic interconnecting devices and passive components - Basic tes
24、t and measurement procedures - Part 3-38:Examinations and measurements - Group delay, chromatic dispersion and phase ripple EN 61300-3-38 - IEC Guide 102 - Electronic components - Specification structures for quality assessment (Qualification approval and capability approval) - - ISO 129-1 - Technic
25、al drawings - Indication of dimensions and tolerances - Part 1: General principles - - ISO 286-1 - Geometrical product specifications (GPS) ISO coding system for tolerances on linear sizes Part 1: Basis of tolerances, deviations and fits EN ISO 286-1 - ISO 1101 - Geometrical Product Specifications (
26、GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out - - BS EN 61978-1:2014EN 61978-1:2014 - 4 - Publication Year Title EN/HD Year ISO 8601 - Data elements and interchange formats - Information interchange - Representation of dates and times - - IEC/TR 61930 - Fibre opt
27、ic graphical symbology - - BS EN 61978-1:2014 2 IEC 61978-1:2014 IEC 2014 CONTENTS 1 Scope 6 2 Normative references 6 3 Terms and definitions 7 3.1 Basic terms . 7 3.2 Component terms . 7 3.3 Performance parameter 8 4 Requirements 10 4.1 General . 10 4.2 Classification 10 4.2.1 General . 10 4.2.2 Ty
28、pe 10 4.2.3 Style 11 4.2.4 Variant . 12 4.2.5 Normative reference extensions 12 4.3 Documentation 13 4.3.1 Symbols 13 4.3.2 Specification system 13 4.3.3 Drawings . 14 4.3.4 Tests and measurements . 15 4.3.5 Test data sheets 15 4.3.6 Instructions for use 15 4.4 Standardization system . 15 4.4.1 Perf
29、ormance standards 15 4.4.2 Reliability standards 16 4.4.3 Interlinking . 16 4.5 Design and construction 18 4.5.1 Materials . 18 4.5.2 Workmanship . 18 4.6 Performance . 18 4.7 Identification and marking . 18 4.7.1 General . 18 4.7.2 Variant identification number . 18 4.7.3 Component marking . 19 4.7
30、.4 Package marking . 19 4.8 Packaging . 19 4.9 Storage conditions 20 4.10 Safety . 20 Annex A (informative) Example of dispersion compensating fibre (DCF) technologies 21 Annex B (informative) Example of fibre Bragg grating (FBG) technologies . 23 Annex C (informative) Example of virtually imaged ph
31、ased array (VIPA) technologies . 25 Annex D (informative) Example of GT etalon technologies . 27 Annex E (informative) Technology dependent characteristics of PCDCs 28 Bibliography 29 BS EN 61978-1:2014IEC 61978-1:2014 IEC 2014 3 Figure 1 Standards currently under preparation . 17 Figure A.1 Chromat
32、ic dispersion in a standard single-mode optical fibre (SMF) . 21 Figure A.2 Calculated contour for different dispersion at the wavelength of 1,55 m (CD(:1,55 m) for a step index core fibre . 22 Figure A.3 Examples of refractive index profile used in DCF 22 Figure B.1 Illustration of the use of a chi
33、rped fibre Bragg grating for chromatic dispersion compensation 23 Figure B.2 Expanded view over 10 nm of the insertion loss spectrum of a multi-channel FBG . 24 Figure C.1 Structure of virtually imaged phased array (VIPA) . 25 Figure C.2 Detailed light path and mechanism of generating chromatic disp
34、ersion 26 Figure D.1 Gires-Tournois etalon . 27 Table 1 Types of passive chromatic dispersion compensators . 11 Table 2 Three-level IEC specification structure 13 Table 3 Standards interlink matrix 17 Table 4 Quality assurance options . 18 Table E.1 Summary of technology dependent characteristics of
35、 PCDCs . 28 BS EN 61978-1:2014 6 IEC 61978-1:2014 IEC 2014 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS FIBRE OPTIC PASSIVE CHROMATIC DISPERSION COMPENSATORS Part 1: Generic specification 1 Scope This part of IEC 61978 applies to fibre optic passive chromatic dispersion compensators, a
36、ll exhibiting the following features: they are optically passive; they have an optical input and an optical output for transmitting optical power; the ports are optical fibres or optical fibre connectors; they are wavelength sensitive; they may be polarization sensitive. This standard establishes un
37、iform requirements for the passive chromatic dispersion compensator. 2 Normative references 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 reference
38、s, the latest edition of the referenced document (including any amendments) applies. IEC 60027 (all parts), Letter symbols to be used in electrical technology IEC 60050-731, International Electrotechnical Vocabulary Chapter 731: Optical fibre communication IEC 60617 (all parts), Graphical symbols fo
39、r diagrams IEC 60695-11-5, Fire hazard testing Part 11-5: Test flames Needle-flame test method Apparatus, confirmatory test arrangement and guidance IEC 60793-2-50:2012, Optical fibres Part 2-50: Product specifications Sectional specification for class B single-mode fibres IEC 60825 (all parts), Saf
40、ety of laser products IEC 61300 (all parts), Fibre optic interconnecting devices and passive components Basic test and measurement procedures IEC 61300-3-38, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-38: Examinations and measurements Grou
41、p delay, chromatic dispersion and phase ripple IEC TR 61930, Fibre optic graphical symbology BS EN 61978-1:2014IEC 61978-1:2014 IEC 2014 7 IEC Guide 102, Electronic components Specification structures for quality assessment (Qualification approval and capability approval) ISO 129-1, Technical drawin
42、gs Indication of dimensions and tolerances Part 1: General principles ISO 286-1, Geometrical product specifications (GPS) ISO coding system for tolerances of linear sizes Part 1: Bases of tolerances and fits ISO 1101, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of for
43、m, orientation, location and run-out ISO 8601, Data elements and interchange formats Information interchange Representation of dates and times 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-731, as well as the following definitions apply. 3.1
44、Basic terms 3.1.1 port optical fibre or optical fibre connector attached to a passive component for the entry and/or exit of optical power (input and/or output port) 3.2 Component terms 3.2.1 passive chromatic dispersion compensator PCDC two-port in-line passive device used to perform chromatic disp
45、ersion compensation Note 1 to entry: PCDCs are commonly used to compensate the chromatic dispersion of an optical path by adding the opposite sign chromatic dispersion. Note 2 to entry: The typical optical paths comprise single-mode fibre, dispersion shifted fibre and/or non-zero dispersion shifted
46、fibre. PCDCs have either negative or positive chromatic dispersion values depending on the chromatic dispersion sign of the optical path. 3.2.2 dispersion compensating fibre DCF speciality fibre to compensate for the chromatic dispersion of an optical path 3.2.3 passive DCF based dispersion compensa
47、tor PCDC which constitutes DCF; realised by having chromatic dispersion characteristics of opposite sign to that of the optical path which are controlled the refractive index profile of the fibre 3.2.4 fibre Bragg grating FBG fibre type optical device which has modulated refractive index profile in
48、the core BS EN 61978-1:2014 8 IEC 61978-1:2014 IEC 2014 3.2.5 passive FBG based dispersion compensator PCDC which constitutes a FBG; PCDC is realised by a chirped FBG which has gradually changing refractive index along the fibre axis 3.2.6 virtually imaged phased array VIPA optical device having a g
49、lass plate with a highly reflective mirror Note 1 to entry: A VIPA has the same functions as a grating. 3.2.7 passive VIPA based dispersion compensator PCDC which consisting of a VIPA, focusing lens and 3-dimensional mirror Note 1 to entry: PCDC produces both positive and negative chromatic dispersion by the movement of the 3-dimensional mirror to compensate for the chromatic dispersion of an optical path. 3.2.8 eta
