1、 IEC 61290-10-5 Edition 1.0 2014-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical amplifiers Test methods Part 10-5: Multichannel parameters Distributed Raman amplifier gain and noise figure Amplificateurs optiques Mthodes dessai Partie 10-5: Paramtres canaux multiples Gain et facteur de bruit
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20、st methods Part 10-5: Multichannel parameters Distributed Raman amplifier gain and noise figure Amplificateurs optiques Mthodes dessai Partie 10-5: Paramtres canaux multiples Gain et facteur de bruit des amplificateurs Raman rpartis INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQ
21、UE INTERNATIONALE S ICS 33.180.30 PRICE CODE CODE PRIX ISBN 978-2-8322-1581-4 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Atte
22、ntion! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC 61290-10-5:2014 IEC 2014 CONTENTS FOREWORD . 3 1 Scope and object . 5 2 Normative references 5 3 Terms, definitions and abbreviations . 6 3.1 Terms and definitions 6 3.2 Abbreviated terms
23、 . 7 4 DRA gain and noise figure parameters Overview 7 5 Apparatus 9 5.1 General . 9 5.2 Multi-channel signal source . 10 5.3 Polarization controller . 11 5.4 Optical spectrum analyser . 11 5.5 Optical power meter 12 5.6 Tuneable narrowband source 12 5.7 Broadband optical source . 12 5.8 Optical con
24、nectors and jumpers 12 6 Test sample . 12 7 Procedure 12 7.1 Overview. 12 7.1.1 Channel on-off gain . 12 7.1.2 Pump module channel insertion loss and channel net gain 13 7.1.3 Channel equivalent noise figure (NF) . 13 7.2 Calibration 13 7.2.1 Calibration of optical bandwidth . 13 7.2.2 Calibration o
25、f OSA power correction factor 15 7.3 Measurement 15 7.4 Calculation 17 7.4.1 Channel on-off gain . 17 7.4.2 Channel net gain . 17 7.4.3 Channel equivalent NF. 17 8 Test results . 17 Annex A (informative) Field measurements versus laboratory measurements 19 Annex B (informative) Pump depletion and ch
26、annel-to-channel Raman scattering 20 Bibliography 21 Figure 1 Distributed Raman amplification in co-propagating (left) and count- propagating (right) configurations . 9 Figure 2 Measurement set-up without a pump module 10 Figure 3 Measurement set-up for counter-propagating configuration 10 Figure 4
27、Measurement set-up for co-propagating configuration 10 Figure 5 Possible implementation of a multi-channel signal source 11 IEC 61290-10-5:2014 IEC 2014 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL AMPLIFIERS TEST METHODS Part 10-5: Multichannel parameters Distributed Raman amplifier gain a
28、nd noise figure FOREWORD 1) The International Electrotechnical 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 standa
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38、n 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 all such patent rights. International Standard IEC 61290-10-5 has been prepared by 86C: Fibre optic systems and active devices, of IEC
39、technical committee 86: Fibre optics. The text of this standard is based on the following documents: CDV Report on voting 86C/1142/CDV 86C/1233/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has
40、 been drafted in accordance with the ISO/IEC Directives, Part 2. 4 IEC 61290-10-5:2014 IEC 2014 A list of all parts in the IEC 61290 series, published under the general title Optical amplifiers Test methods, can be found on the IEC website. The committee has decided that the contents of this publica
41、tion will remain unchanged until the stability 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 reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo o
42、n 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 61290-10-5:2014 IEC 2014 5 OPTICAL AMPLIFIERS TEST METHODS Part 10-5: Multic
43、hannel parameters Distributed Raman amplifier gain and noise figure 1 Scope and object This part of IEC 61290 applies to distributed Raman amplifiers (DRAs). DRAs are based on the process whereby Raman pump power is introduced into the transmission fibre, leading to signal amplification within the t
44、ransmission fibre through stimulated Raman scattering. A detailed overview of the technology and applications of DRAs can be found in IEC TR 61292-6. A fundamental difference between these amplifiers and discrete amplifiers, such as EDFAs, is that the latter can be described using a black box approa
45、ch with well-defined input and output ports. On the other hand, a DRA is basically a pump module, with the actual amplification process taking place along the transmission fibre. This difference means that standard methods described in other parts of IEC 61290 for measuring amplifier parameters, suc
46、h as gain and noise figure, cannot be applied without modification. The object of this standard is to establish uniform requirements for accurate and reliable measurements, using an optical spectrum analyser (OSA), of the following DRA parameters: a) channel on-off gain; b) pump unit insertion loss;
47、 c) channel net gain; d) channel signal-spontaneous noise figure. The measurement method is largely based on the interpolated source subtraction (ISS) method using an optical spectrum analyser, as described and elaborated in IEC 61290-10-4, with relevant modifications relating to a DRA. All numerica
48、l values followed by () are suggested values for which the measurement is assured. Other values may be acceptable but should be verified. NOTE General aspects of noise figure test methods are reported in IEC 61290-3. 2 Normative references The following documents, in whole or in part, are normativel
49、y 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. IEC 60825-1, Safety of laser products Part 1: Equipment classification and requirements IEC 61291-1, Optical amplifiers Part 1: Generic specification IEC 61291-4,
