1、 IEC 61978-1 Edition 3.0 2014-05 INTERNATIONAL STANDARD Fibre optic interconnecting devices and passive components Fibre optic passive chromatic dispersion compensators Part 1: Generic specification IEC 61978-1:2014-05(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Gen
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11、ices and passive components Fibre optic passive chromatic dispersion compensators Part 1: Generic specification INTERNATIONAL ELECTROTECHNICAL COMMISSION U ICS 33.180.01 PRICE CODE ISBN 978-2-8322-1583-8 Registered trademark of the International Electrotechnical Commission Warning! Make sure that yo
12、u obtained this publication from an authorized distributor. colour inside 2 IEC 61978-1:2014 IEC 2014 CONTENTS FOREWORD . 4 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 Clas
13、sification 10 4.2.1 General . 10 4.2.2 Type 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
14、.4 Standardization system . 15 4.4.1 Performance 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 num
15、ber . 18 4.7.3 Component marking . 19 4.7.4 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 (in
16、formative) Example of virtually imaged phased array (VIPA) technologies . 25 Annex D (informative) Example of GT etalon technologies . 27 Annex E (informative) Technology dependent characteristics of PCDCs 28 Bibliography 29 IEC 61978-1:2014 IEC 2014 3 Figure 1 Standards currently under preparation
17、. 17 Figure A.1 Chromatic 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 Illustra
18、tion of the use of a chirped 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
19、generating chromatic dispersion 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 dep
20、endent characteristics of PCDCs . 28 4 IEC 61978-1:2014 IEC 2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS FIBRE OPTIC PASSIVE CHROMATIC DISPERSION COMPENSATORS Part 1: Generic specification FOREWORD 1) The International Electrotechnical C
21、ommission (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 end a
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30、cation 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 Publi
31、cation may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61978-1 has been prepared by subcommittee 86B: Fibre optic interconnecting devices and passive components, of IEC technical committee 86: Fibre opti
32、cs. This third edition cancels and replaces the second edition, published in 2009, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) introduction of new terms and definitions; b) revision of classification
33、s; c) addition of Annex E. IEC 61978-1:2014 IEC 2014 5 The text of this standard is based on the following documents: CDV Report on voting 86B/3639/CDV 86B/3710/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. Thi
34、s publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 61978 series, published under the general title Fibre optic interconnecting devices and passive components Fibre optic passive chromatic dispersion compensators, can be found on the IEC w
35、ebsite. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced b
36、y a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The “colour inside” logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users s
37、hould therefore print this publication using a colour printer. 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 chro
38、matic dispersion compensators, all 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 sensiti
39、ve. This standard establishes uniform 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 cite
40、d applies. For undated references, 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 (
41、all parts), Graphical symbols for 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 f
42、ibres IEC 60825 (all parts), Safety 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: Ex
43、aminations and measurements Group delay, chromatic dispersion and phase ripple IEC TR 61930, Fibre optic graphical symbology IEC 61978-1:2014 IEC 2014 7 IEC Guide 102, Electronic components Specification structures for quality assessment (Qualification approval and capability approval) ISO 129-1, Te
44、chnical drawings 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 Tol
45、erances of form, 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 definitio
46、ns apply. 3.1 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
47、chromatic dispersion 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 dispe
48、rsion shifted 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 dispe
49、rsion compensator 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 the core 8 IEC 61978-1:2014 IEC 2014 3.2.5 passive FBG based dispersion compensator PCDC which constitutes a F
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