1、 IEC 61290-4-1 Edition 2.0 2016-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical amplifiers Test methods Part 4-1: Gain transient parameters Two-wavelength method Amplificateurs optiques Mthodes dessai Partie 4-1: Paramtres de gain transitoire Mthode deux longueurs donde IEC 61290-4-1:2016-09(
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19、ous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 61290-4-1 Edition 2.0 2016-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical amplifiers Test methods Part 4-1: Gain transient parameters Two-wavelength method Amplificateurs optiques M
20、thodes dessai Partie 4-1: Paramtres de gain transitoire Mthode deux longueurs donde INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 33.180.30 ISBN 978-2-8322-3659-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commi
21、ssion Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC 61290-4-1:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUCTION
22、. 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 phenomenon
23、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 respons
24、e 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 respo
25、nse 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 Tabl
26、e B.1 Transient gain response for various rise times and fall times (16 dB add or drop) 17 IEC 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 International Electrotechnica
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36、blication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. 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 Pu
37、blication may be the subject of patent 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
38、 edition 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
39、for consistency with other documents in the IEC 61290-4 series. 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 found in t
40、he 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 has decide
41、d 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 amended.
42、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. IEC 61290-4-1:2016 IEC 2016 5 INTRODUCTION Thi
43、s 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 and the consequences on fibre o
44、ptic systems is provided in Annex A and on slew rate effects in Annex B. 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 amplifiers (OAs) using active fibres (optical fibre amp
45、lifiers (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 document is to provide the general background for O
46、FA 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) channel addition or removal transient gain undershoot
47、 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 that some or all of their content constitutes
48、 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 3 Terms, definitions and abbreviated terms 3.1
49、 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: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 3.1.1 survivin
