1、 INTERNATIONAL STANDARD IECCEINORME INTERNATIONALE61290-7-1Second editionDeuxime dition2007-04Optical amplifiers Test methods Part 7-1: Out-of-band insertion losses Filtered optical power meter method Amplificateurs optiques Mthodes dessai Partie 7-1: Pertes dinsertion hors-bande Mthode par puissanc
2、e-mtre optique filtr Reference number Numro de rfrence IEC/CEI 61290-7-1:2007 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electr
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14、u 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 INTERNATIONAL STANDARD IECCEINORME INTERNATIONALE61290-7-1Second editionDeuxime dition2007-04Optical amplifiers Test methods Part 7-1: Out-of-band insertion
15、 losses Filtered optical power meter method Amplificateurs optiques Mthodes dessai Partie 7-1: Pertes dinsertion hors-bande Mthode par puissance-mtre optique filtr For price, see current cataloguePour prix, voir catalogue en vigueur PRICE CODE CODE PRIX K Commission Electrotechnique InternationaleIn
16、ternational Electrotechnical Commission 2 61290-7-1 IEC:2007 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope and object6 2 Normative references6 3 Abbreviated terms.6 4 Apparatus.6 5 Test sample7 6 Procedure.8 7 Calculation .8 8 Test results 8 9 Electromagnetic compatibility (EMC) requirements9 Bibliogra
17、phy10 Figure 1 Typical arrangement of the optical filter test apparatus for out-of-band insertion loss measurements.7 61290-7-1 IEC:2007 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL AMPLIFIERS TEST METHODS Part 7-1: Out-of-band insertion losses Filtered optical power meter method FOREWORD 1
18、) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the elect
19、rical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to
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21、al Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since ea
22、ch technical committee has representation from all interested National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC P
23、ublications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possib
24、le in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment de
25、clared to be in conformity with one of its standards. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC Nat
26、ional Committees for any personal injury, property damage 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
27、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 Publication may be the subject of patent rights. IEC sha
28、ll not be held responsible for identifying any or all such patent rights. International Standard IEC 61290-7-1 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 publis
29、hed in 1998 and constitutes a technical revision. The main significant changes are the following: a) the title has been changed to be consistant with other documents in the IEC 61290 series; b) the applicability has been extended to all commercially available optical amplifiers - not just optical fi
30、ber amplifiers; c) Clause 9, EMC, has been added. This standard shall be used in conjunction with IEC 61291-1. It was established on the basis of the second (2006) edition of that standard. 4 61290-7-1 IEC:2007 The text of this standard is based on the following documents: CDV Report on voting 86C/7
31、26/CDV 86C/741/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 been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 61290 series, published under the
32、 general title Optical amplifiers Test methods, can be found 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 pub
33、lication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. 61290-7-1 IEC:2007 5 INTRODUCTION This International Standard is devoted to the subject of optical amplifiers. The technology of optical amplifiers is still rapidly evolving, hence amen
34、dments and new additions to this standard can be expected. 6 61290-7-1 IEC:2007 OPTICAL AMPLIFIERS TEST METHODS Part 7-1: Out-of-band insertion losses Filtered optical power meter method 1 Scope and object This part of IEC 61290 applies to optical amplifiers (OAs) using active fibres presently comme
35、rcially available containing rare-earth dopants. The object of this standard is to establish uniform requirements for accurate and reliable measurements, by means of the filtered optical power meter test method, of the following OA parameters, as defined in IEC 61291-1: a) out-of-band insertion loss
36、; b) out-of-band reverse insertion loss. NOTE 1 The out-of-band insertion loss of an OA is highly dependent on the amplifier configuration and the out-of-band wavelength. NOTE 2 All numerical values followed by () are suggested values. 2 Normative references The following referenced documents are in
37、dispensable 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: Generic specification 3 Abbreviated terms Each abb
38、reviation introduced in this standard is explained in the text at least the first time it appears. However, for an easier understanding of the whole text, the following is a list of all abbreviations used in this standard: OA Optical amplifier EMC Electromagnetic compatibility ESD Electrostatic disc
39、harge 4 Apparatus A scheme of the measurement set-up is given in Figure 1. 61290-7-1 IEC:2007 7 Figure 1b Out-of-band insertion loss measurementA B C Figure 1a Optical filter calibration OPTICAL SOURCE Optical source Optical source C IEC 665/98 IEC 664/98 A B OA Optical isolator Optical isolator Opt
40、icalfilter Opticalfilter OA under test Optical power meter Optical power meter Figure 1 Typical arrangement of the optical filter test apparatus for out-of-band insertion loss measurements The test equipment listed below, with the required characteristics, is needed: a) optical source: the optical s
41、ource shall generate a light at the out-of-band wavelength specified in the relevant detail specification. Unless otherwise specified, the optical source shall emit a continuous wave with the full width at half maximum of the spectrum narrower than 1 nm (); b) optical isolator: the polarization-depe
42、ndent loss variation of the isolator, at the out-of-band wavelength, shall be better than 0,2 dB (). Optical isolation shall be better than 40 dB (). The reflectance from this device shall be smaller than 40 dB () at each port; c) optical filter: it shall be pass band at the out-of-band wavelength,
43、and have a high loss over the OA (optical amplifier) pump and signal wavelength ranges, in such a way as to render the total power in these wavelength ranges more than 20 dB () lower than the out-of-band power after passing through the OA; d) optical power meter: it shall have a measurement accuracy
44、 better than 0,2 dB, irrespective of the state of polarization, at the out-of-band wavelength of the OA; e) optical fibre jumpers: the mode field diameter of the optical fibre jumpers used should be as close as possible to that of fibres used at input and output ports of the OA. Their reflectance sh
45、all be smaller than 40 dB () at each port, and the length of each jumper shall be less than 2 m. 5 Test sample The OA shall operate as specified in the relevant detail specification. 8 61290-7-1 IEC:2007 NOTE The operating conditions of the OA under test could be, for instance, the nominal operating
46、 conditions or the unpowered conditions. 6 Procedure This method permits determination of the OA out-of-band insertion losses according to the procedures described below: a) out-of-band insertion loss: 1) set the optical source at the out-of-band wavelength, as specified in the relevant detail speci
47、fication; 2) calibrate the optical filter measuring the optical power at the out-of-band wavelength P0with the optical power meter, without the OA, as shown in Figure 1a; 3) insert the OA under test, as shown in Figure 1b, and measure the optical power P1 at the out-of-band wavelength, with the opti
48、cal power meter. b) out-of-band reverse insertion loss: As in a), but with the OA inserted with the input port used as output port and vice-versa. 7 Calculation Calculation shall be carried out as indicated below. a) Out-of-band insertion loss Calculate the OA out-of-band insertion loss, LOB, from t
49、he power levels P0and P1(in dBm), as: LOB = P0 P1(dBm) b) Out-of-band reverse insertion loss As in a), taking into account that LOBrepresents, in this case, the out-of-band reverse insertion loss of the OA. 8 Test results Report the following information for each test. a) Out-of-band insertion loss The following details shall be prese
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