IEC 61290-10-1-2009 Optical amplifiers - Test methods - Part 10-1 Multichannel parameters - Pulse method using an optical switch and optical spectrum analyzer《光.pdf

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1、 IEC 61290-10-1 Edition 2.0 2009-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical amplifiers Test methods Part 10-1: Multichannel parameters Pulse method using an optical switch and optical spectrum analyzer Amplificateurs optiques Mthodes dessai Partie 10-1: Paramtres canaux multiples Mthode

2、dimpulsion utilisant un interrupteur optique et un analyseur de spectre optique IEC 61290-10-1:2009 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form o

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16、des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61290-10-1 Edition 2.0 2009-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical amplifiers Test methods Part

17、10-1: Multichannel parameters Pulse method using an optical switch and optical spectrum analyzer Amplificateurs optiques Mthodes dessai Partie 10-1: Paramtres canaux multiples Mthode dimpulsion utilisant un interrupteur optique et un analyseur de spectre optique INTERNATIONAL ELECTROTECHNICAL COMMIS

18、SION COMMISSION ELECTROTECHNIQUE INTERNATIONALE T ICS 33.180.30 PRICE CODE CODE PRIX ISBN 2-8318-1032-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61290-10-1 IEC:2009 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope

19、 and object7 2 Normative references .7 3 Abbreviated terms 7 4 Apparatus.8 5 Test sample10 6 Procedure 10 6.1 Calibration.11 6.1.1 Calibration of OSA power measurement 11 6.1.2 Calibration of the pulse duty ratio 11 6.1.3 Calibration of the sampling module12 6.1.4 Calibration of dynamic isolation .1

20、3 6.2 OA measurement 15 6.2.1 Timing adjustment for ASE and amplified signal power measurement15 6.2.2 ASE measurement.16 6.2.3 Amplified signal power measurement.16 7 Calculation .17 7.1 General .17 7.2 Noise factor calculation .18 7.3 ASE power 18 7.4 Gain calculation 19 7.5 Average output signal

21、power .19 7.6 Noise figure calculation .19 8 Test results 19 Annex A (informative) Output waveforms for various EDFAs at 25 kHz and 500 kHz pulse rates20 Annex B (informative) Measurement accuracy versus pulse rate.22 Annex C (informative) Pulse repetition frequency measurements23 Bibliography24 Fig

22、ure 1 Typical arrangement of the optical pulse test method.8 Figure 2 Two arrangements of the optical pulse source9 Figure 3 Static isolation of an optical switch.9 Figure 4 Definitions of rise time and fall time, t rand t f of optical pulses .10 Figure 5 Measurement flow chart .11 Figure 6 Arrangem

23、ent for the sampling switch calibration.12 Figure 7 Arrangement for timing adjustment.13 Figure 8 Timing adjustment of the sampling switch 14 Figure 9 Timing chart for dynamic isolation calibration.15 Figure 10 Arrangement for OA measurement .16 Figure 11 Timing chart for ASE measurement 17 Figure 1

24、2 Timing chart for amplified signal power measurement 17 61290-10-1 IEC:2009 3 Figure A.1 EDFA output waveforms for various EDFAs 21 Figure B.1 NF measurement accuracy versus pulse rate22 Figure C.1 Set-up to evaluate gain recovery error versus modulation rate23 Figure C.2 Gain recovery error versus

25、 modulation frequency with pump current as a parameter .23 4 61290-10-1 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL AMPLIFIERS TEST METHODS Part 10-1: Multichannel parameters Pulse method using an optical switch and optical spectrum analyzer FOREWORD 1) The International Electrotech

26、nical Commission (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 thi

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34、amage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this p

35、ublication. 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 Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or al

36、l such patent rights International Standard IEC 61290-10-1 has been prepared by subcommittee 86C: Fibre optic systems and active devices, of IEC technical committee 86: Fibre optics. This second edition cancels and replaces the first edition published in 2003. It is a technical revision with updated

37、 references and cautions on proper use of the procedure. This International Standard is to be read in conjunction with IEC 61291-1. The text of this standard is based on the following documents: CDV Report on voting 86C/778/CDV 86C/809/RVC Full information on the voting for the approval of this stan

38、dard can be found in the report on voting indicated in the above table. 61290-10-1 IEC:2009 5 This publication 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 1)can be f

39、ound on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result 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 reconfir

40、med, withdrawn, replaced by a revised edition, or amended. _ 1)The first editions of some of these parts were published under the general title Optical fibre amplifiers Basic specification or Optical amplifier test methods. 6 61290-10-1 IEC:2009 INTRODUCTION This International Standard is devoted to

41、 the subject of optical fibre amplifiers. The technology of optical fibre amplifiers is still rapidly evolving, hence amendments and new editions to this standard can be expected. 61290-10-1 IEC:2009 7 OPTICAL AMPLIFIERS TEST METHODS Part 10-1: Multichannel parameters Pulse method using an optical s

42、witch and optical spectrum analyzer 1 Scope and object This part of IEC 61290 applies to optical amplifiers (OAs) using active fibres and waveguides, containing rare-earth dopants, currently commercially available. The object of this standard is to establish uniform requirements for accurate and rel

43、iable measurements of the signal-spontaneous noise figure as defined in IEC 61291-1. The test method independently detects amplified signal power and amplified spontaneous emission (ASE) power by launching optical pulses into the OA under test and synchronously detecting “on“ and “off“ levels of the

44、 output pulses by using an optical sampling switch and an optical spectrum analyzer (OSA). Such measurement is possible because the gain response of the rare-earth doped OA is relatively slow, particularly in Er-doped OAs. However, since the OA gain dynamics vary with amplifier types, operating cond

45、itions and control schemes, the gain dynamics should be carefully considered when applying the present test method to various OA. The manufacturer of the OA should present data validating the required modulation frequency to limit the error to 1 dB. The measurements for obtaining this information ar

46、e described in Annex C. The test method is described basically for multichannel applications, which includes single channel applications as a special case of multichannel (wavelength-division multiplexed) applications. NOTE All numerical values followed by () are currently under study. 2 Normative r

47、eferences 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 (including any amendments) applies. IEC 61291-1, Optical amplifiers Part 1:

48、 Generic specification 3 Abbreviated terms For the purposes of this document, the following abbreviated terms apply: AGC automatic gain control ALC automatic level control AOM acousto-optic modulator APC automatic power control ASE amplified spontaneous emission CW continuous wave 8 61290-10-1 IEC:2

49、009 DBR distributed Bragg reflector (laser diode) DC direct current DFB distributed feed-back (laser diode) ECL external cavity laser (diode) EDFA erbium-doped fibre amplifier ER erbium FWHM full width at half maximum LED light emitting diode LD laser diode NF noise figure OA optical amplifier OSA optical spectrum analyzer SW switch 4 Apparatu