SIST EN 61290-10-1:2004
(Main)Optical amplifiers - Test methods -- Part 10-1: Multichannel parameters - Pulse method using an optical switch and optical spectrum analyzer
Optical amplifiers - Test methods -- Part 10-1: Multichannel parameters - Pulse method using an optical switch and optical spectrum analyzer
Applies to optical fibre amplifiers (OFAs) using active fibres, containing rare-earth dopants, currently commercially available. The uniform requirements for accurate and reliable measurements of the signal-spontaneous noise figure as defined in 3.1.18 of EN 61291-1 are established. The test method independently detects amplified signal power and amplified spontaneous emission (ASE)power by launching optical pulses into the OFA under test and synchronously detecting on and off levels of the output pulses by using an optical sampling switch and an optical spectrum analyzer (OSA).
Prüfverfahren für Lichtwellenleiter-Verstärker -- Teil 10-1: Mehrkanalparameter - Pulsmethode bei Verwendung eines optischen Schalters und optischen Spektralanalysators
Amplificateurs optiques - Méthodes d'essai -- Partie 10-1: Paramètres à canaux multiples - Méthode d'impulsion utilisant un interrupteur optique et un analyseur de spectre optique
En anglais seulement
Optični ojačevalci – Preskusne metode – 10-1. del: Parametri z več kanali - Metoda s pulzom pri uporabi optičnega stikala in optičnega spektralnega analizatorja (IEC 61290-10-1:2003)*
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Standards Content (Sample)
SIST EN 61290-10-1:2004SLOVENSKIseptember 2004
STANDARDOptični ojačevalci – Preskusne metode – 10-1. del: Parametri z več kanali - Metoda s pulzom pri uporabi optičnega stikala in optičnega spektralnega analizatorja (IEC 61290-10-1:2003)*Optical amplifiers - Test methods - Part 10-1: Multichannel parameters - Pulse method using an optical switch and optical spectrum analyzer (IEC 61290-10-1:2003)©
Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljenoReferenčna številkaSIST EN 61290-10-1:2004(en)ICS33.180.30
EUROPEAN STANDARD
EN 61290-10-1 NORME EUROPÉENNE EUROPÄISCHE NORM
July 2003 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61290-10-1:2003 E
ICS 33.180.30
English version
Optical amplifiers -
Test methods Part 10-1: Multichannel parameters -
Pulse method using an optical switch
and optical spectrum analyzer (IEC 61290-10-1:2003)
Amplificateurs optiques -
Méthodes d'essai Partie 10-1: Paramètres à canaux multiples -
Méthode d'impulsion utilisant
un interrupteur optique
et un analyseur de spectre optique (CEI 61290-10-1:2003)
Prüfverfahren für Lichtwellenleiter-Verstärker Teil 10-1: Mehrkanalparameter - Pulsmethode bei Verwendung
eines optischen Schalters
und optischen Spektralanalysators (IEC 61290-10-1:2003)
This European Standard was approved by CENELEC on 2003-05-01. 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 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 same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
EN 61290-10-1:2003 - 2 - Foreword
The text of document 86C/498/FDIS, future edition 1 of IEC 61290-10-1, 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 was approved by CENELEC as EN 61290-10-1 on 2003-05-01.
This standard shall be read in conjunction with EN 61291-1:1998 and EN 61290-3:2000
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) 2004-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow) 2006-05-01
The International Electrotechnical Commission (IEC) and CENELEC draw attention to the fact that it is claimed that compliance with this International Standard/European Standard may involve the use of two patents.
One patent concerns a technique for determining the amplified spontaneous emission noise of an optical amplifier in the presence of an optical signal given in clause 3 and clause 5.
The IEC and CENELEC take no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured the IEC that he/she is willing to negotiate licences under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holder of this patent right is registered with the IEC. Information may be obtained from:
Agilent Technologies Palo Alto (CA) USA
Another patent concerns a measurement system and noise measurement apparatus for an optical amplifier given in clause 3 and clause 5.
The IEC and CENELEC take no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured the IEC that he/she is willing to negotiate licences under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holder of this patent right is registered with the IEC. Information may be obtained from:
Fujitsu Limited Tokyo Japan
Attention is drawn to the possibility that some of the elements of this International Standard/European Standard may be the subject of patent rights other than those identified above. IEC and CENELEC shall not be held responsible for identifying any or all such patent rights.
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A, B, and C are informative. Annex ZA has been added by CENELEC. __________
- 3 - EN 61290-10-1:2003
Endorsement notice
The text of the International Standard IEC 61290-10-1:2003 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 60793-1 NOTE Harmonized in
EN 60793-1 series (modified).
IEC 60825-1 NOTE Harmonized as EN 60825-1:1994 (not modified).
IEC 60825-2 NOTE Harmonized as EN 60825-2:2000 (not modified).
IEC 60874-1 NOTE Harmonized as EN 60874-1:1999 (not modified).
IEC 61290-1-1 NOTE Harmonized as EN 61290-1-1:1998 (not modified).
__________
EN 61290-10-1:2003 - 4 - Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). 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 61290-3 - 1) Optical fibre amplifiers - Basic specification Part 3: Test methods for noise figure parameters
EN 61290-3 2000 2) IEC 61291-1 - 1) Optical fibre amplifiers Part 1: Generic specification EN 61291-1 1998 2)
1) Undated reference.
2) Valid edition at date of issue.
NORMEINTERNATIONALECEIIECINTERNATIONALSTANDARD61290-10-1Première éditionFirst edition2003-03Amplificateurs optiques –Méthodes d'essai –Partie 10-1:Paramètres à canaux multiples –Méthode d'impulsion utilisant un interrupteuroptique et un analyseur de spectre optiqueOptical amplifiers –Test methods –Part 10-1:Multichannel parameters –Pulse method using an optical switchand optical spectrum analyzerPour prix, voir catalogue en vigueurFor price, see current catalogue IEC 2003
Droits de reproduction réservés
Copyright - all rights reservedAucune partie de cette publication ne peut être reproduite niutilisée sous quelque forme que ce soit et par aucun procédé,électronique ou mécanique, y compris la photocopie et lesmicrofilms, sans l'accord écrit de l'éditeur.No part of this publication may be reproduced or utilized in anyform or by any means, electronic or mechanical, includingphotocopying and microfilm, without permission in writing fromthe publisher.International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11
Telefax: +41 22 919 03 00
E-mail: inmail@iec.ch
Web: www.iec.chCODE PRIXPRICE CODETCommission Electrotechnique InternationaleInternational Electrotechnical Commission
61290-10-1 © IEC:2003– 3 –CONTENTSFOREWORD.5INTRODUCTION.91Scope and object.112Normative references.113Apparatus.114Test sample.175Procedure.175.1Calibration.195.2OFA measurement.276Calculation.336.1Noise factor calculation.336.2ASE power.356.3Gain calculation.356.4Average output signal power.356.5Noise figure calculation.357Test results.35Annex A (informative)
List of abbreviations.39Annex B (informative)
Output waveforms for various EDFAs at 25 kHz and 500 kHzpulse rates (see 5.1.2 a).41Annex C (informative)
Measurement accuracy versus pulse rates (see 5.1.2 a).45Bibliography.47Figure 1 – Typical arrangement of the optical pulse test method.13Figure 2 – Two arrangements of the optical pulse source.13Figure 3 – Static isolation of an optical switch.15Figure 4 – Definitions of rise time and fall time, tr and tf of optical pulses.17Figure 5 – Measurement flow chart.19Figure 6 – Arrangement for the sampling switch calibration.21Figure 7 – Arrangement for timing adjustment.23Figure 8 – Timing adjustment of the sampling switch.25Figure 9 – Timing chart for dynamic isolation calibration.27Figure 10 – Arrangement for OFA measurement.29Figure 11 – Timing chart for ASE measurement.31Figure 12 – Timing chart for amplified signal power measurement.31Figure B.1 – EDFA output waveforms for various EDFAs.43Figure C.1 – NF measurement accuracy versus pulse rates.45
61290-10-1 © IEC:2003– 5 –INTERNATIONAL ELECTROTECHNICAL COMMISSION____________OPTICAL AMPLIFIERS –TEST METHODS –Part 10-1: Multichannel parameters –Pulse method using an optical switchand optical spectrum analyzerFOREWORD1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprisingall national electrotechnical committees (IEC National Committees). The object of the IEC is to promoteinternational co-operation on all questions concerning standardization in the electrical and electronic fields. Tothis end and in addition to other activities, the IEC publishes International Standards. Their preparation isentrusted to technical committees; any IEC National Committee interested in the subject dealt with mayparticipate in this preparatory work. International, governmental and non-governmental organizations liaisingwith the IEC also participate in this preparation. The IEC collaborates closely with the International Organizationfor Standardization (ISO) in accordance with conditions determined by agreement between the twoorganizations.2)The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, aninternational consensus of opinion on the relevant subjects since each technical committee has representationfrom all interested National Committees.3)The documents produced have the form of recommendations for international use and are published in the formof standards, technical specifications, technical reports or guides and they are accepted by the NationalCommittees in that sense.4)In order to promote international unification, IEC National Committees undertake to apply IEC InternationalStandards transparently to the maximum extent possible in their national and regional standards. Anydivergence between the IEC Standard and the corresponding national or regional standard shall be clearlyindicated in the latter.5)The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for anyequipment declared to be in conformity with one of its standards.The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed that compliancewith this document may involve the use of two patents.One patent concerns a technique for determining the amplified spontaneous emission noise of an optical amplifierin the presence of an optical signal given in Clause 3 and Clause 5.IEC takes no position concerning the evidence, validity and scope of this patent right.The holder of this patent right has assured the IEC that he/she is willing to negotiate licenses under reasonable andnon-discriminatory terms and conditions with applicants throughout the world.
In this respect, the statement of theholder of this patent right is registered with the IEC. Information may be obtained from:Agilent TechnologiesPalo Alto (CA)USAAnother patent concerns a measurement system and noise measurement apparatus for an optical amplifier given inclause 3 and clause 5.IEC takes no position concerning the evidence, validity and scope of this patent right.The holder of this patent right has assured the IEC that he/she is willing to negotiate licenses under reasonable andnon-discriminatory terms and conditions with applicants throughout the world.
In this respect, the statement of theholder of this patent right is registered with the IEC. Information may be obtained from:Fujitsu LimitedTokyoJapanAttention is drawn to the possibility that some of the elements of this International Standard may be the subject ofpatent rights other than those identified above. IEC shall not be held responsible for identifying any or all suchpatent rights.
61290-10-1 © IEC:2003– 7 –International Standard IEC 61290-10-1 has been prepared by subcommittee 86C: Fibre opticsystems and active devices, of IEC technical committee 86: Fibre optics.This standard should be read in conjunction with IEC 61291-1 and IEC 61290-3.This bilingual version (2003-05) replaces the English version.The text of this standard is based on the following documents:FDISReport on voting86C/498/FDIS86C/533/RVDFull information on the voting for the approval of this standard can be found in the report onvoting indicated in the above table.This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.The committee has decided that the contents of this publication will remain unchanged until 2008.At this date, the publication will be•reconfirmed;•withdrawn;•replaced by a revised edition, or•amended.
61290-10-1 © IEC:2003– 9 –INTRODUCTIONAs far as can be determined, this part of IEC 61290 is the first International Standard on thissubject. The technology of optical fibre amplifiers is quite new and still emerging, henceamendments and new editions to this document can be expected.Each abbreviation introduced in this standard is explained in the text at least the first time itappears. However, for an easier understanding of the whole text, a list of abbreviations used inthis International Standard is given in Annex A.
61290-10-1 © IEC:2003– 11 –OPTICAL AMPLIFIERS –TEST METHODS –Part 10-1: Multichannel parameters –Pulse method using an optical switchand optical spectrum analyzer1 Scope and objectThis part of IEC 61290 applies to optical fibre amplifiers (OFAs) using active fibres, containingrare-earth dopants, currently commercially available. It establishes uniform requirementsfor accurate and reliable measurements of the signal-spontaneous noise figure as definedin 3.1.18 of IEC 61291-1.The test method independently detects amplified signal power and amplified spontaneousemission (ASE) power by launching optical pulses into the OFA under test and synchronouslydetecting “on” and “off” levels of the output pulses by using an optical sampling switch and anoptical spectrum analyzer (OSA).Such a measurement is possible because the gain response of the rare-earth doped OFA isrelatively slow, particularly in Er-doped OFAs. However, since the OFA gain dynamics varywith amplifier types, operating conditions and control scheme, the amplifier type should beconsidered when applying the present test method.The test method is described basically for multichannel applications, which includes singlechannel applications as a special case of multichannel (wavelength-division multiplexed)applications.NOTE
All numerical values followed by (‡) are intended to be currently under study.2 Normative referencesThe following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.IEC 61290-3, Optical fibre amplifiers – Basic specification – Part 3: Test methods for noisefigure parametersIEC 61291-1, Optical fibre amplifiers – Part 1: Generic specification3 ApparatusThe basic measurement set-up is given in Figure 1.
61290-10-1 © IEC:2003– 13 –SWOptical spectrumanalyzerTriggerOptical pulsestypical repetition rate500 to 1 000 kHzOAOFA under testOptical pulsesourceIEC
844/03Figure 1 – Typical arrangement of the optical pulse test methodThe test equipment needed, with the required characteristics, is listed below.a)Optical pulse source: Two arrangements of the optical pulse source are possible as shownin Figure 2. Optical pulse source a (Figure 2a) consists of CW optical sources with anexternal optical switch and attenuator(s). Optical pulse source b (Figure 2b) consists ofdirectly modulated optical sources and attenuator(s).Optical sourcesoperating at CWOptical attenuator(s)Optical switchdBOptical pulse source aIEC
845/03Figure 2a – Pulse source consisting of CW optical sources with anexternal optical switch and attentuator(s)Optical pulse source bOptical sourcespulsated by directmodulationdBOptical attenuator(s)IEC
846/03Figure 2b – Pulse source consisting of directly modulatedoptical sources and attenuator(s)Figure 2 – Two arrangements of the optical pulse sourceUnless otherwise specified, the full width at half maximum (FWHM) of the output spectrumof optical pulse source a or b shall be narrower than 0,1 nm(‡)1 so as not to cause anyinterference to adjacent channels. In the case of a single-channel source, it shall benarrower than 1 nm (‡). Distributed feedback (DFB) lasers, distributed Bragg r
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