BS EN 61291-4:2012 BSI Standards Publication Optical amplifiers Part 4: Multichannel applications — Performance specification template BRITISH STANDARD BS EN 61291-4:2012 National foreword This British Standard is the UK implementation of EN 61291-4:2012 It is identical to IEC 61291-4:2011 It supersedes BS EN 61291-4:2008 which is withdrawn The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/3, Fibre optic systems and active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 on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © The British Standards Institution 2012 Published by BSI Standards Limited 2012 ISBN 978 580 74420 ICS 33.180.30 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2012 Amendments issued since publication Amd No Date Text affected BS EN 61291-4:2012 EUROPEAN STANDARD EN 61291-4 NORME EUROPÉENNE EUROPÄISCHE NORM March 2012 ICS 33.180.30 Supersedes EN 61291-4:2008 English version Optical amplifiers Part 4: Multichannel applications Performance specification template (IEC 61291-4:2011) Amplificateurs optiques Partie 4: Applications multicanaux Modèle de spécification de fonctionnement (CEI 61291-4:2011) Lichtwellenleiter-Verstärker Teil 4: Mehrkanalanwendungen Vorlage für Leistungsspezifikationen (IEC 61291-4:2011) This European Standard was approved by CENELEC on 2011-12-29 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 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 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 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 Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels © 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 61291-4:2012 E BS EN 61291-4:2012 EN 61291-4:2012 -2- Foreword The text of document 86C/993/CDV, future edition of IEC 61291-4, 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 61291-4:2012 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 latest date by which the national standards conflicting with the document have to be withdrawn (dop) 2012-09-29 (dow) 2014-12-29 This document supersedes EN 61291-4:2008 EN 61291-4:2012 includes the following significant technical changes with respect to EN 61291-4:2008: The transient parameter test methods, EN 61290-4 series , have been added to Tables 1, and This standard is to be used in conjunction with EN 61291-1 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 identifying any or all such patent rights Endorsement notice The text of the International Standard IEC 61291-4:2011 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: IEC 61280 series NOTE Harmonized in EN 61280 series IEC 61291-2 NOTE Harmonized as EN 61291-2 BS EN 61291-4:2012 EN 61291-4:2012 -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 references, only the edition cited applies For undated references, the latest edition of the referenced document (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 60825-1 - Safety of laser products Part 1: Equipment classification and requirements EN 60825-1 - IEC 61290 Series Optical amplifiers - Test methods EN 61290 Series IEC 61291-1 - Optical amplifiers Part 1: Generic specification EN 61291-1 - IEC 61291-5-2 - Optical amplifiers Part 5-2: Qualification specifications Reliability qualification for optical fibre amplifiers EN 61291-5-2 - –2– BS EN 61291-4:2012 61291-4 © IEC:2011 CONTENTS INTRODUCTION Scope Normative references Terms, definitions and abbreviations 3.1 Terms and definitions 3.2 Overview of multichannel definitions 3.3 Abbreviations Product specification worksheet for booster (power) amplifiers (BA) Product specification worksheet for pre-amplifiers (PA) Product specification worksheet for line amplifiers (LA) Electromagnetic compatibility requirements 10 Bibliography 11 Figure – An optical amplifier in a multichannel application Table – Minimum list of relevant parameters of BA amplifiers to be specified for multichannel applications Table – Minimum list of relevant parameters of pre-amplifiers to be specified for multichannel applications Table – Minimum list of relevant parameters of line amplifiers to be specified for multichannel applications 10 BS EN 61291-4:2012 61291-4 © IEC:2011 –5– INTRODUCTION This International Standard is devoted to the subject of optical amplifiers The technology of optical amplifiers is still rapidly evolving, hence amendments and new editions to this standard can be expected Each abbreviation introduced in this International Standard is generally explained in the text the first time it appears However, for an easier understanding of the whole text, a list of abbreviations used in this International Standard is given in 3.3 –6– BS EN 61291-4:2012 61291-4 © IEC:2011 OPTICAL AMPLIFIERS – Part 4: Multichannel applications – Performance specification template Scope This part of IEC 61291 applies to optical amplifier (OA) devices and sub-systems to be used in multichannel applications For single channel applications, use IEC 61291-2 The object of this performance specification template is to provide a frame for the preparation of detail specifications on the performances of OA devices and sub-systems to be used in multichannel applications Detail product specification writers may add specification parameters and/or groups of specification parameters for particular applications However, detail specification writers may not remove specification parameters specified in this standard 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 references, the latest edition of the referenced document (including any amendments) applies NOTE A list of informative references is given in the bibliography IEC 60825-1, Safety of laser products – Part 1: Equipment classification and requirements IEC 61290 (all parts), Optical amplifiers – Test methods IEC 61291-1, Optical amplifiers – Part 1: Generic specification IEC 61291-5-2, Optical amplifiers – Part 5-2: Qualification specifications – Reliability qualification for optical fibre amplifiers 3.1 Terms, definitions and abbreviations Terms and definitions For the purposes of this document, the terms, definitions and parameters given in IEC 61291-1 and the following apply 3.2 Overview of multichannel definitions Parameters specified for optical devices are those characterizing the transmission, operation, reliability and environmental properties of the OA device, which is seen as a black box from a general point of view as defined in the generic specification IEC 61291-1 Each test method (OA test methods, IEC 61290 series) is generally given for the measurement of a group of homogeneous parameters The grouping of the homogeneous parameters is BS EN 61291-4:2012 61291-4 © IEC:2011 –7– given in the generic specification, IEC 61291-1, together with the corresponding test method specification number Safety characteristics of optical amplifiers described in the present standard are provided in IEC 60825-1 A typical configuration of an OA in a multichannel application is illustrated in Figure At the transmitting side, m signals, coming from m optical transmitters, Tx1, Tx2, Txm, each with a unique wavelength, λ , λ , λ m , respectively, are combined by an optical multiplexer (OM) At the receiving side, the m signals at λ , λ , λ m , are separated with an optical demultiplexer (OD) and routed to separate optical receivers, Rx1, Rx2, Rxm, respectively To characterize the OA in this multichannel application an input reference plane and an output reference plane are defined at the OA input and output ports, respectively, as shown in Figure Output reference plane Input reference plane Tx1 Rx1 Tx2 Rx2 OM OA Pi1 Pi2 Pim Txm OD Po1 Po2 Pom Rxm PASE (λ) IEC 1283/08 Figure – An optical amplifier in a multichannel application At the input reference plane, m input signals at the m wavelengths are considered, each with a unique power level, P i1 , P i2 , P im , respectively At the output reference plane, m output signals at the m wavelengths, resulting from the optical amplification of the corresponding m input signals, are considered, each with power level P o1 , P o2 , P om , respectively Moreover, the amplified spontaneous emission, ASE, with a noise power spectral density, P ASE (λ), is also to be considered at the OA output port Most definitions of relevant parameters given in the generic specification IEC 61291-1 can be suitably extended to multichannel applications When this extension is straightforward, the word “channel” will be added to the pertinent parameter In particular, the noise figure and the signal-spontaneous noise figure as defined in IEC 61291-1 may be extended to multichannel applications, channel by channel, by considering the value of P ASE (λ) at each channel wavelength and the channel signal bandwidth For each channel wavelength there will be a unique value of noise figure that will be a function of the input power level of all signals In this case the parameters, channel noise figure and channel signal-spontaneous noise figure, are introduced 3.3 Abbreviations ASE Amplified spontaneous emission BA Booster (power) amplifier LA Line amplifier na Not applicable OA Optical amplifier OFA Optical fibre amplifier BS EN 61291-4:2012 61291-4 © IEC:2011 –8– PA Pre-amplifier PMD Polarization mode dispersion Product specification worksheet for booster (power) amplifiers (BA) The worksheet in Table contains a minimum list of specification parameters to be included in product specifications of OA devices to be used as booster (power) amplifiers in multichannel applications, together with their specification criteria (that is in terms of maximum value, minimum value or both) and the indication of the corresponding standard test method Table – Minimum list of relevant parameters of BA amplifiers to be specified for multichannel applications Parameters Channel allocation Transmission characteristics Maximum value Test method Under consideration Channel input power range dBm IEC 61290-10 series Total input power range dBm IEC 61290-10 series Channel output power range dBm IEC 61290-10 series Maximum total output power dBm na IEC 61290-10 series Channel addition/removal gain transient response dB na IEC 61290-4 series Multichannel gain variation (gain flatness) dB na IEC 61290-10 series Channel signal-spontaneous noise figure (channel noise figure) dB na IEC 61290-3 series Input reflectance dB na IEC 61290-5 series Output reflectance dB na IEC 61290-5 series dBm na IEC 61290-6 series Operating temperature range °C Maximum operating relative humidity % Range of frequencies Hz Maximum operating vibration severity Amplitude Peak-to-peak Duration IEC 61291-5-2 na mm p-p na s na IEC 61291-5-2 IEC 61291-5-2 Storage temperature range °C Maximum storage relative humidity % na IEC 61291-5-2 mm na IEC 61291-5-2 Maximum shock severity, free drop Safety parameters Minimum value nm or THz Pump leakage to input (for OFA only) Environmental parameters Unit Drop height Safety laser classification IEC 61291-5-2 na na IEC 60825-1 BS EN 61291-4:2012 61291-4 © IEC:2011 –9– Product specification worksheet for pre-amplifiers (PA) The worksheet in Table contains a minimum list of specification parameters to be included in product specifications of OA devices to be used as pre-amplifiers in multichannel applications, together with their specification criteria (that is in terms of maximum value, minimum value or both) and the indication of the corresponding standard test method Table – Minimum list of relevant parameters of pre-amplifiers to be specified for multichannel applications Parameters Channel allocation Transmission characteristics Environmental parameters Minimum value Maximum value Test method nm or THz Under consideration Channel input power range dBm IEC 61290-10 series Total input power range dBm IEC 61290-10 series Channel output power range dBm IEC 61290-10 series Maximum total output power dBm na IEC 61290-10 series Channel addition/removal transient gain response dB na IEC 61290-4 series Channel signal-spontaneous noise figure dB na IEC 61290-3 series Channel gain dB Multichannel gain variation (gain flatness) dB na IEC 61290-10 series Input reflectance dB na IEC 61290-5 series Output reflectance dB na IEC 61290-5 series Pump leakage to output (for OFA only) dBm na IEC 61290-6 series Operating temperature range °C Maximum operating relative humidity % Maximum operating vibration severity na IEC 61290-10 series IEC 61291-5-2 na Range of frequencies Hz Amplitude peak-to-peak mm na s na Duration IEC 61291-5-2 IEC 61291-5-2 Storage temperature range °C Maximum storage relative humidity % na IEC 61291-5-2 mm na IEC 61291-5-2 Maximum shock severity, free drop Safety parameters Unit Drop height Laser safety classification IEC 61291-5-2 na na IEC 60825-1 Product specification worksheet for line amplifiers (LA) The worksheet in Table contains a minimum list of specification parameters to be included in product specifications of OA devices to be used as line amplifiers in multichannel applications, together with their specification criteria (that is in terms of maximum value, minimum value or both) and the indication of the corresponding standard test method BS EN 61291-4:2012 61291-4 © IEC:2011 – 10 – Table – Minimum list of relevant parameters of line amplifiers to be specified for multichannel applications Parameters Test method Channel input power range dBm IEC 61290-10 series Total input power range dBm IEC 61290-10 series Channel output power range dBm IEC 61290-10 series Maximum total output power dBm na IEC 61290-10 series Channel signal-spontaneous noise figure (channel noise figure) dB na IEC 61290-3 series Multichannel gain variation (gain flatness) dB na IEC 61290-10 series Channel addition/removal transient gain response dB na IEC 61290-4 series dB/dB IEC 61290-10 series Channel gain dB IEC 61290-10 series Input reflectance dB na IEC 61290-5 series Output reflectance dB na IEC 61290-5 series Polarisation mode dispersion (PMD) ps na IEC 61290-11 series Operating temperature range °C Maximum operating relative humidity % Maximum operating vibration severity IEC 61291-5-2 na IEC 61291-5-2 IEC 61291-5-2 Range of frequencies Hz Amplitude peak-topeak mm na s na Duration Storage temperature range °C Maximum storage relative humidity % na IEC 61291-5-2 mm na IEC 61291-5-2 Maximum shock severity, free drop Safety parameters Maximum value Under consideration Multichannel gain tilt Environmental parameters Minimum value nm or THz Channel allocation Transmission characteristics Unit Drop height Laser safety classification IEC 61291-5-2 na na IEC 60825-1 Electromagnetic compatibility requirements The devices and assemblies addressed by the present standard shall comply with suitable requirements for electromagnetic compatibility (in terms of both emission and immunity), depending on particular usage/environment in which they are intended to be installed or integrated Guidance on the drafting of such EMC requirements is provided in the IEC Guide 107 Guidance for electrostatic discharge (ESD) is still under study BS EN 61291-4:2012 61291-4 © IEC:2011 – 11 – Bibliography IEC 61280 (all parts), Fibre optic communication subsystem test procedures IEC 61291-2, Optical amplifiers – Part 2: Digital applications – Performance specification template IEC/TR 61292 (all parts), Optical amplifiers IEC/TR 61930, Fibre optic graphical symbology IEC Guide 107, Electromagnetic compatibility – Guide to the drafting of electromagnetic compatibility publications ITU-T Recommendation G.957, Optical interfaces 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