1、 IEC 61290-11-1 Edition 2.0 2008-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical amplifiers Test methods Part 11-1: Polarization mode dispersion parameter Jones matrix eigenanalysis (JME) Amplificateurs optiques Mthodes dessais Partie 11-1: Paramtre de dispersion du mode de polarisation Analy
2、se des vecteurs propres de la matrice de Jones (JME) IEC 61290-11-1:2008 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 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, electronic
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16、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 61290-11-1 Edition 2.0 2008-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical amplifiers Test methods Part 11-1: Polarization mode dis
17、persion parameter Jones matrix eigenanalysis (JME) Amplificateurs optiques Mthodes dessais Partie 11-1: Paramtre de dispersion du mode de polarisation Analyse des vecteurs propres de la matrice de Jones (JME) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE M ICS
18、33.180.30 PRICE CODE CODE PRIX ISBN 2-8318-8771-2 2 61290-11-1 IEC:2008 CONTENTS FOREWORD.3 1 Scope and object5 2 Normative references .5 3 Acronyms, symbols and abbreviations 6 4 Apparatus.6 4.1 General .6 4.2 Tuneable laser 7 4.3 Polarization adjuster7 4.4 Polarizers7 4.5 Input optics .7 4.6 Fibre
19、 pigtail .7 4.7 Optical lens system .7 4.8 Output optics.7 4.9 Polarimeter7 5 Procedure 8 6 Calculations .8 6.1 Jones matrix eigenanalysis calculations 8 6.2 Display of DGD versus wavelength9 6.3 Average DGD9 6.4 Maximum DGD 9 7 Test results 9 Annex A (informative) Degree of polarization reduction d
20、ue to optical amplifier ASE11 Bibliography13 Figure 1 Schematic diagram of equipment (typical)6 Figure 2 Measurement example of the DGD for a typical optical amplifier 9 Figure A.1 Spectrum of optical amplifier output11 61290-11-1 IEC:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OPTICAL AMPLIF
21、IERS TEST METHODS Part 11-1: Polarization mode dispersion parameter Jones matrix eigenanalysis (JME) FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The obje
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30、use of, or reliance upon, this IEC Publication 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 tha
31、t 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 61290-11-1 has been prepared by subcommittee 86C: Fibre optic systems and active devices, of IEC technical c
32、ommittee 86: Fibre optics. This second edition cancels and replaces the first edition, published in 2003, and is a technical revision that specifically addresses additional types of optical amplifiers. It also includes updated references. The text of this standard is based on the following documents
33、: CDV Report on voting 86C/694/CDV 86C/710/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. 4 61290-11-1 IEC:2008 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all
34、the parts in the IEC 61290 series, under the 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
35、.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. 61290-11-1 IEC:2008 5 OPTICAL AMPLIFIERS TEST METHODS Part 11-1: Polarization mode dispersion parameter Jones matrix eigenanalysis (JME) 1 Sc
36、ope and object This part of IEC 61290 applies to all commercially available optical amplifiers (OAs), including optical fibre amplifiers (OFAs) using active fibres, semiconductor optical amplifiers (SOAs), and planar waveguide optical amplifiers (PWOAs). Polarization-mode dispersion (PMD) causes an
37、optical pulse to spread in the time domain. This dispersion could impair the performance of a telecommunications system. The effect can be related to differential group velocity and corresponding arrival times of different polarization components of the signal. For a narrowband source, the effect ca
38、n be related to a differential group delay (DGD) between pairs of orthogonally polarized principal states of polarization (PSP). Other information about PMD may be found in IEC 61282-9 in general and in IEC 61292-5 on OAs in particular. This test method describes a procedure for measuring the PMD of
39、 OAs. The measurement result is obtained from the measurement of the normalized Stokes parameters at two closely spaced wavelengths. The test method described herein requires a polarized signal at the input of the polarimeter with a degree of polarization (DOP) of at least 25 %. Although the test so
40、urce is highly polarized, the DOP at the output of the OA is reduced by amplified spontaneous emission (ASE). Annex A analyses the impact of ASE on the DOP. In order to assure an accurate measurement, the DOP is measured as part of the measurement procedure. The method described herein has been show
41、n to be immune to polarization-dependent gain (PDG) and polarization dependent loss (PDL) up to approximately 1 dB. Although the Jones matrix eigenanalysis (JME) test method is in principle also applicable to unpumped (that is, unpowered) OAs, the JME technique in this standard applies to pumped (th
42、at is, powered) OAs only. 2 Normative references 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.
43、IEC/TR 61282-9, Fibre optic communication system design guides Part 9: Guidance on polarization mode dispersion measurements and theory IEC/TR 61292-5, Optical amplifiers Part 5: Polarization mode dispersion parameter General information 6 61290-11-1 IEC:2008 3 Acronyms, symbols and abbreviations Wa
44、velength interval Differential group delay (DGD) Optical frequency Angular optical frequency F OA noise factor G Gain h Planks constant N() Power spectral density of the ASE P s Amplified signal power ASE Amplified spontaneous emission DGD Differential group delay DOP Degree of polarization DUT Devi
45、ce (optical amplifier) under test JME Jones matrix eigenanalysis OA Optical amplifier OFA Optical fibre amplifier PDG Polarization-dependent gain PDL Polarization-dependent loss PMD Polarization-mode dispersion PWOA Planar waveguide optical amplifier PSP Principal states of polarization SOA Semicond
46、uctor optical amplifier 4 Apparatus 4.1 General Figure 1 provides a schematic diagram of the key components in a typical measurement system. 0 45 90 Linear polarizers Tunable laser Polarimeter Polarization adjuster DUT IEC 393/03Figure 1 Schematic diagram of equipment (typical) 61290-11-1 IEC:2008 7
47、 4.2 Tuneable laser Use single-line lasers or narrowband sources that can be varied or tuned across the intended measurement wavelength range. The spectral distribution shall be narrow enough so that light on the DUT remains polarized under all conditions of the measurement. 4.3 Polarization adjuste
48、r If the source is polarized, a polarization adjuster follows the laser and is set to provide roughly circularly polarized light to the polarizers, so that the polarizers never cross polar- ization with the input light. If the source is unpolarized, this is not necessary. For the polarized source, a
49、djust the polarization as follows. a) Set the tuneable laser wavelength to the centre of the range to be measured. b) Insert each of the three polarizers into the beam and perform three corresponding power measurements at the output of the polarizer. c) Adjust the source polarization via the polarization adjuster in such a way that the three powers fall within approximately a
