1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFibre optic interconnectingdevices and passive components Fibre optic filters Generic specificationBS EN 61977:2010National forewordThis British Standard is the UK implementation
2、 of EN 61977:2010. It is identical to IEC 61977:2010. It supersedes BS EN 61977:2002 which is withdrawn.The UK participation in its preparation was entrusted by Technical CommitteeGEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconnectingdevices and passive components.A list of orga
3、nizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010ISBN 978 0 580 64896 0ICS 33.180.20Compliance with a British Standard
4、cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 June 2010.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61977:2010EUROPEAN STANDARD EN 61977 NORME EUROPENNE
5、EUROPISCHE NORM May 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and b
6、y any means reserved worldwide for CENELEC members. Ref. No. EN 61977:2010 E ICS 33.180.20 Supersedes EN 61977:2002English version Fibre optic interconnecting devices and passive components - Fibre optic filters - Generic specification (IEC 61977:2010) Dispositifs dinterconnexion et composants passi
7、ves fibres optiques - Filtres pour fibres optiques - Spcification gnrique (CEI 61977:2010) Lichtwellenleiter -Verbindungselemente und passive Bauteile - Lichtwellenleiterfilter - Fachgrundspezifikation (IEC 61977:2010) This European Standard was approved by CENELEC on 2010-05-01. CENELEC members are
8、 bound to comply with the CEN/CENELEC Internal 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 t
9、he Central Secretariat or to any 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 Central Secretariat has the
10、same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Nethe
11、rlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61977:2010EN 61977:2010 - 2 - Foreword The text of document 86B/2982/FDIS, future edition 2 of IEC 61977, prepared by SC 86B, Fibre optic interconnecting devices and passive compon
12、ents, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61977 on 2010-05-01. This European Standard supersedes EN 61977:2002. EN 61977:2010 constitutes a technical revision. The changes with respect to EN 61977:2002 include having substantia
13、lly increased the number of terms, added an informative annex for example of filtering technologies and deleted quality assessment procedures. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held respo
14、nsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2011-02-01 latest date by which the national standards conflicting with t
15、he EN have to be withdrawn (dow) 2011-05-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61977:2010 was approved by CENELEC as a European Standard without any modification. _ BS EN 61977:2010- 3 - EN 61977:2010 Annex ZA (normative) Normative ref
16、erences to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document
17、(including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60027 Series Letter symbols to be used in electrical technology EN 60027 Series IEC 60050-731 -
18、International Electrotechnical Vocabulary (IEV) - Chapter 731: Optical fibre communication - - IEC 61300 Series Fibre optic interconnecting devices and passive components - Basic test and measurement procedures EN 61300-1 Series IEC 60617-SN - Graphical symbols for diagrams - - IEC 60695-11-5 - Fire
19、 hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance EN 60695-11-5 - IEC 60825-1 - Safety of laser products - Part 1: Equipment classification and requirements EN 60825-1 - IEC/TR 61930 - Fibre optic graphical symbology - - IEC G
20、uide 102 - Electronic components - Specification structures for quality assessment (Qualification approval and capability approval) - - IECQ 01 - IEC Quality Assessment System for Electronic Components (IECQ) - Basic Rules - - IECQ 001002-3 - IEC Quality Assessment System for Electronic Components (
21、IECQ) - Rules of Procedure - Part 3: Approval procedures - - ISO 129-1 - Technical drawings - Indication of dimensions and tolerances - Part 1: General principles - - ISO 286-1 - ISO system of limits and fits - Part 1: Bases of tolerances, deviations and fits- - ISO 1101 - Geometrical Product Specif
22、ications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out - - ISO 8601 - Data elements and interchange formats - Information interchange - Representation of dates and times - - BS EN 61977:2010 2 61977 IEC:2010(E) CONTENTS 1 Scope.6 2 Normative references .6 3
23、Terms and definitions .7 3.1 Basic terms .7 3.2 Component terms7 3.3 Performance terms8 4 Requirements .11 4.1 Classification.11 4.1.1 General .11 4.1.2 Type12 4.1.3 Style12 4.1.4 Variant 13 4.1.5 Assessment level.13 4.1.6 Normative reference extensions 13 4.2 Documentation 14 4.2.1 Symbols 14 4.2.2
24、 Specification system14 4.2.3 Drawings .15 4.2.4 Test and measurements 15 4.2.5 Test report.15 4.2.6 Instructions for use16 4.3 Standardisation system .16 4.3.1 Interface standards16 4.3.2 Performance standard .16 4.3.3 Reliability standard17 4.3.4 Interlinking 17 4.4 Design and construction 18 4.4.
25、1 Materials .18 4.4.2 Workmanship.18 4.5 Performance requirements 18 4.6 Identification and marking .19 4.6.1 General .19 4.6.2 Variant identification number .19 4.6.3 Component marking 19 4.6.4 Package marking.19 4.7 Packaging .19 4.8 Storage conditions 20 4.9 Safety .20 Annex A (informative) Examp
26、le of filtering technologies.21 Bibliography25 Figure 1 Illustration of maximum insertion loss within pass band9 Figure 2 Illustration of minimum insertion loss within pass band.10 Figure A.1 Schematic diagram of etalon.21 BS EN 61977:201061977 IEC:2010(E) 3 Figure A.2 Transmission characteristic of
27、 etalon 22 Figure A.3 Usage of fibre Bragg grating .22 Figure A.3 Fibre Bragg grating.23 Figure A.4 Structure of multilayer thin-film .24 Table 1 The IEC specification structure14 Table 2 Standards interlink matrix18 Table 3 Quality assurance options .18 BS EN 61977:2010 6 61977 IEC:2010(E) FIBRE OP
28、TIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS FIBRE OPTIC FILTERS GENERIC SPECIFICATION 1 Scope This International Standard applies to the family of fibre optic filters. These components have all of the following general features: they are passive for the reason that they contain no optoelectro
29、nic or other transducing elements which can process the optical signal launched into the input port; they modify the spectral intensity distribution in order to select some wavelengths and inhibit others; they are fixed, i.e. the modification of the spectral intensity distribution is fixed and can n
30、ot be tuned; they have input and output ports or a common port (having both functions of input and output) for the transmission of optical power; the ports are optical fibre or optical fibre connectors; they differ according to their characteristics. They can be divided into the following categories
31、: short-wave pass (only wavelengths lower than or equal to a specified value are passed); long-wave pass (only wavelengths greater than or equal to a specified value are passed); band-pass (only an optical window is allowed); notch (only an optical window is inhibited). It is also possible to have a
32、 combination of the above categories. This standard establishes uniform requirements for optical, mechanical and environmental properties. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited ap
33、plies. 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 61300 (all
34、 parts), Fibre optic interconnecting devices and passive components Basic test and measurement procedures IEC 60617-SN, 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 BS EN 61977
35、:201061977 IEC:2010(E) 7 IEC 60825-1, Safety of laser products Part 1: Equipment classification, requirements and users guide IEC 61930, Fibre optic graphic symbology IEC Guide 102, Electronic components Specification structures for quality assessment (Qualification approval and capability approval)
36、 IECQ 01, IEC Quality Assessment System for Electronic Components (IECQ Scheme) Basic Rules IECQ 001002-3, IEC Quality Assessment System for Electronic Components (IECQ) Rules of Procedure Part 3: Approval procedures ISO 129-1, Technical drawings Indication of dimensions and tolerances Part 1: Gener
37、al principles ISO 286-1, ISO system of limits and fits Part 1: Bases of tolerances, deviations and fits ISO 1101, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out ISO 8601, Data elements and interchange formats Information interch
38、ange Representation of dates and times 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050(731) and the following apply. 3.1 Basic terms 3.1.1 port an optical fibre or optical fibre connector attached to a passive component for the entry and/or exi
39、t of the optical power (input and/or output port) 3.2 Component terms 3.2.1 band pass filter device designed to allow signals between two specific wavelengths to pass 3.2.2 etalon device consisted of a transparent plane-parallel plate with two reflecting surfaces, or two parallel highly reflecting m
40、irrors. The varying transmission function of an etalon is caused by interference between the multiple reflections of light between the two reflecting surfaces 3.2.3 fibre Bragg grating FBG device which can reflect particular wavelengths of light and transmit other wavelengths BS EN 61977:2010 8 6197
41、7 IEC:2010(E) 3.2.4 fibre optic filter passive component used in fibre optic transmission to modify the spectral intensity distribution of a signal in order to pass some wavelengths and block some others 3.2.5 gain flattening filter/ gain equalizer GFF/ GEQ device designed to have the inverse charac
42、teristic of an optical device which has an insertion loss wavelength characteristic 3.2.6 long wavelength pass filter LWPF filter that passes long wavelength signals but reduces the amplitude of short wavelength signals 3.2.7 notch filter filter that passes all wavelength except those in a stop band
43、 centred on a centre wavelength 3.2.8 reflecting type fibre optic filter fibre optic filter in which the input and output ports are coincident 3.2.9 short wavelength pass filter SWPF filter that passes short wavelength signals but reduces the amplitude of long wavelength signals 3.2.10 thin-film fil
44、ter TFF optical filter which passes a particular wavelength band and reflecting all other wavelengths by using interference effect of thin-film 3.2.11 transmitting type fibre optic filter fibre optic filter in which the input and output ports are different 3.3 Performance terms 3.3.1 insertion loss
45、reduction of optical power, when transmitted between the ports of a two-port fibre optic filter expressed in decibels. It is defined as: ()inoutlog10 PPa = where Pin is the optical power launched into one of the two ports; Pout is the optical power received from the other port. The insertion loss is
46、 a function of wavelength BS EN 61977:201061977 IEC:2010(E) 9 3.3.2 chromatic dispersion group delay between two closely spaced wavelengths (or frequencies) inside an optical signal going through a pair of conducting ports of a WDM device. It corresponds to the difference between the arrival times o
47、f these two closely spaced wavelengths (or frequencies). Chromatic dispersion is defined as the variation (first order derivative) of this group delay over a range of wavelengths (or frequencies) especially over the channel operating wavelength (or frequency) range at a given time, temperature, pres
48、sure and humidity. It is expressed as D in terms of units of ps/nm or ps/GHz and it is a predictor of the broadening of a pulse transmitted through the device 3.3.3 free spectral range in the case of a periodic spectral response of a fibre optic filter, the difference between two adjacent operating
49、wavelengths 3.3.4 isolation wavelength nominal wavelength k(where h k), that is nominally suppressed by a fibre optic filter 3.3.5 isolation wavelength range, stopband specified range of wavelengths from kminto kmaxaround the isolation wavelength k, that are nominally suppressed by a fibre optic filter 3.3.6 maximum insertion loss within pass band maximum value of the insertion loss within pass band. Figure 1 shows p
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