1、Optical amplifiers Test methods Part 4-1: Gain transient parameters Two-wavelength methodBS EN 61290-4-1:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN 61290-4-1:2016. It isidentical to IEC 61
2、290-4-1:2016. It supersedes BS EN 61290-4-1:2011 whichis withdrawn.The UK participation in its preparation was entrusted by TechnicalCommittee GEL/86, Fibre optics, to Subcommittee GEL/86/3, Fibre optic systems and active devices.A list of organizations represented on this committee can be obtained
3、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 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 89228 8ICS 33.180.30Compliance with a Bri
4、tish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61290-4-1:2016EUROPEAN STANDARD NO
5、RME EUROPENNE EUROPISCHE NORM EN 61290-4-1 December 2016 ICS 33.180.30 Supersedes EN 61290-4-1:2011 English Version Optical amplifiers - Test methods - Part 4-1: Gain transient parameters - Two-wavelength method (IEC 61290-4-1:2016) Amplificateurs optiques - Mthodes dessai - Partie 4-1: Paramtres de
6、 gain transitoire - Mthode deux longueurs donde (IEC 61290-4-1:2016) Lichtwellenleiter-Verstrker - Prfverfahren - Teil 4-1: Transiente Verstrkerparameter - Zwei-Wellenlngen-Verfahren (IEC 61290-4-1:2016) This European Standard was approved by CENELEC on 2016-10-31. CENELEC members are bound to compl
7、y 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 the CEN-CENELEC
8、Management Centre 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 CEN-CENELEC Management Centre has
9、 the 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
10、via, Lithuania, Luxembourg, 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 Elektro
11、technische Normung CEN-CENELEC 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 61290-4-1:2016 E BS EN 61290-4-1:2016EN 61290-4-1:2016 2 European foreword The text of document
12、 86C/1347/CDV, future edition 2 of IEC 61290-4-1, prepared by SC 86C “Fibre optic systems and active devices“ of IEC/TC 86 “Fibre optics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61290-4-1:2016. The following dates are fixed: latest date by which the document has
13、to beimplemented at national level bypublication of an identical nationalstandard or by endorsement(dop) 2017-07-31 latest date by which the nationalstandards conflicting with thedocument have to be withdrawn(dow) 2019-10-31 This document supersedes EN 61290-4-1:2011. EN 61290-4-1:2016 includes the
14、following significant technical changes with respect to EN 61290-4-1:2011: a) Extended the applicability from only EDFAs to all OFAs;b) Updated definitions for consistency with other documents in the EN 61290-4 Series.Attention is drawn to the possibility that some of the elements of this document m
15、ay 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 61290-4-1:2016 was approved by CENELEC as a European Standard without any modification. In the official ve
16、rsion, for Bibliography, the following notes have to be added for the standards indicated: IEC 61290-1 Series NOTE Harmonized as EN 61290-1 Series. IEC 61290-3-1 NOTE Harmonized as EN 61290-3-1. IEC 61290-3-2 NOTE Harmonized as EN 61290-3-2. IEC 61290-4-2 NOTE Harmonized as EN 61290-4-2. BS EN 61290
17、-4-1:2016EN 61290-4-1:2016 3 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated reference
18、s, 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 modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date informati
19、on 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 61291-1 - Optical amplifiers - Part 1: Generic specification EN 61291-1 - BS EN 61290-4-1:2016 2 IEC 61290-4-1:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUC
20、TION . 5 1 Scope 6 2 Normative references. 6 3 Terms, definitions and abbreviated terms . 6 3.1 Terms and definitions 6 3.2 Abbreviated terms . 8 4 Measurement apparatus 8 5 Test specimen . 11 6 Procedure . 11 7 Calculations 12 8 Test results . 12 Annex A (informative) Background on transient phenom
21、enon in optical amplifiers . 13 Annex B (informative) Slew rate effect on transient gain response 16 B.1 The importance of rise time and fall time of input power . 16 B.2 Measured data and explanation . 16 Bibliography . 19 Figure 1 Definitions of rise and fall times 9 Figure 2 OFA transient gain re
22、sponse 10 Figure 3 Generic transient control measurement setup 11 Figure A.1 OFA pump control for a chain of 5 OFAs and 4-fibre spans 14 Figure A.2 EDFA spectral hole depth for different gain compression 15 Figure A.3 EDFA spectral hole depth for different wavelengths . 15 Figure B.1 Transient gain
23、response at various slew rates 17 Figure B.2 16 dB add and drop (rise and fall time = 10 s) 18 Figure B.3 16 dB add and drop (rise and fall time = 1 000 s) . 18 Table 1 Examples of add and drop scenarios for transient control measurement 12 Table 2 Typical results of transient control measurement 12
24、 Table B.1 Transient gain response for various rise times and fall times (16 dB add or drop) 17 BS EN 61290-4-1:2016IEC 61290-4-1:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL AMPLIFIERS TEST METHODS Part 4-1: Gain transient parameters Two-wavelength method FOREWORD 1) The Inte
25、rnational Electrotechnical Commission (IEC) is a worldwide organization for standardization comprisingall national electrotechnical committees (IEC National Committees). The object of IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electr
26、onic fields. Tothis end and in addition to other activities, IEC publishes International Standards, Technical Specifications,Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IECPublication(s)”). Their preparation is entrusted to technical committees; a
27、ny IEC National Committee interestedin 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 closelywith the International Organization for Standardi
28、zation (ISO) in accordance with conditions determined byagreement between the two organizations.2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an internationalconsensus of opinion on the relevant subjects since each technical committee has represent
29、ation from allinterested IEC National Committees.3) IEC Publications have the form of recommendations for international use and are accepted by IEC NationalCommittees in that sense. While all reasonable efforts are made to ensure that the technical content of IECPublications is accurate, IEC cannot
30、be held responsible for the way in which they are used or for anymisinterpretation by any end user.4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publicationstransparently to the maximum extent possible in their national and regional publications. Any
31、 divergencebetween any IEC Publication and the corresponding national or regional publication shall be clearly indicated inthe latter.5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformityassessment services and, in some areas, access to IEC
32、 marks of conformity. IEC is not responsible for anyservices carried out by independent certification bodies.6) All users should ensure that they have the latest edition of this publication.7) No liability shall attach to IEC or its directors, employees, servants or agents including individual exper
33、ts andmembers of its technical committees and IEC National Committees for any personal injury, property damage orother damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) andexpenses arising out of the publication, use of, or reliance upon, this IEC Publi
34、cation or any other IECPublications.8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications isindispensable for the correct application of this publication.9) Attention is drawn to the possibility that some of the elements of this IEC Publicati
35、on may be the subject ofpatent rights. IEC shall not be held responsible for identifying any or all such patent rights.International Standard IEC 61290-4-1 has been prepared by subcommittee 86C: Fibre optic systems and active devices, of IEC technical committee 86: Fibre optics. This second edition
36、cancels and replaces the first edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) extended the applicability from only EDFAs to all OFAs;b) updated definitions for consis
37、tency with other documents in the IEC 61290-4 series.BS EN 61290-4-1:2016 4 IEC 61290-4-1:2016 IEC 2016 The text of this standard is based on the following documents: CDV Report on voting 86C/1347/CDV 86C/1397/RVC Full information on the voting for the approval of this International Standard can be
38、found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 61290 series, published under the general title Optical amplifiers Test methods can be found on the IEC website. The committee
39、has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or
40、 amended.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 should therefore print this document using a colour printer. BS EN 61290-4-1:2016IEC 61290-4-1:201
41、6 IEC 2016 5 INTRODUCTION This part of IEC 61290-4 is devoted to optical amplifiers (OAs). The technology of OAs is quite new and still emerging; hence amendments and new editions to this document can be expected. Background information on the transient phenomenon in erbium-doped fibre amplifiers an
42、d the consequences on fibre optic systems is provided in Annex A and on slew rate effects in Annex B. BS EN 61290-4-1:2016 6 IEC 61290-4-1:2016 IEC 2016 OPTICAL AMPLIFIERS TEST METHODS Part 4-1: Gain transient parameters Two-wavelength method 1 Scope This part of IEC 61290-4 applies to optical ampli
43、fiers (OAs) using active fibres (optical fibre amplifiers (OFAs) containing rare-earth dopants including erbium-doped fibre amplifiers (EDFAs) and optically amplified elementary sub-systems. These amplifiers are commercially available and widely deployed in service provider networks. The object of d
44、ocument is to provide the general background for OFA transients and related parameters, and to describe a standard test method for accurate and reliable measurement of the following transient parameters: a) channel addition or removal transient gain overshoot and transient net gain overshoot;b) chan
45、nel addition or removal transient gain undershoot and transient net gain undershoot;c) channel addition or removal gain offset;d) channel addition or removal transient gain response time constant (settling time).2 Normative references The following documents are referred to in the text in such a way
46、 that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61291-1, Optical amplifiers Part 1: Generic specification
47、3 Terms, definitions and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61291-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: avail
48、able at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp3.1.1 surviving channel optical signal that remains after a drop event 3.1.2 rise time time it takes for the input optical signal to rise from 10 % to 90 % of the total difference between the initial
49、and final signal levels during an add event BS EN 61290-4-1:2016IEC 61290-4-1:2016 IEC 2016 7 Note 1 to entry: See Figure 1(a). 3.1.3 initial gain gain of the surviving or pre-existing channel before a drop or add event 3.1.4 final gain steady-state gain of the surviving or pre-existing channel after a long period of time (i.e. once the gain has stabilized) after a drop or add event 3.1.5 gain offset change of the gain between initial and final state Note
