IEC 61280-4-4-2017 Fibre optic communication subsystem test procedures - Part 4-4 Cable plants and links - Polarization mode dispersion measurement for installe.pdf
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1、 IEC 61280-4-4 Edition 2.0 2017-03 INTERNATIONAL STANDARD Fibre optic communication subsystem test procedures Part 4-4: Cable plants and links Polarization mode dispersion measurement for installed links IEC 61280-4-4:2017-03(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 I
2、EC, 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 or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IECs member National Commit
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8、line and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing 20 000 terms and definitions in English and French, with equivalent terms in 16 additional languages. Also known as the International Electrotec
9、hnical Vocabulary (IEV) online. IEC Glossary - std.iec.ch/glossary 65 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have been collected from earlier publications of IEC TC 37, 77, 86
10、and CISPR. IEC Customer Service Centre - webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC 61280-4-4 Edition 2.0 2017-03 INTERNATIONAL STANDARD Fibre optic communication subsystem test p
11、rocedures Part 4-4: Cable plants and links Polarization mode dispersion measurement for installed links INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.180.01 ISBN 978-2-8322-4077-9 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publi
12、cation from an authorized distributor. colour inside 2 IEC 61280-4-4:2017 IEC 2017 CONTENTS FOREWORD . 7 INTRODUCTION . 9 1 Scope 10 2 Normative references 10 3 Terms, definitions, symbols and abbreviated terms 10 3.1 Terms and definitions 10 3.2 Symbols and abbreviated terms 11 4 Background on PMD
13、properties . 12 5 Measurement methods 13 5.1 Methods of measuring PMD 13 5.1.1 General . 13 5.1.2 Method A: Fixed analyzer with Fourier transformation (FA-FT) 14 5.1.3 Method B: Stokes parameters evaluation (SPE) . 14 5.1.4 Method C: Interferometric 15 5.1.5 Method D: Stokes parameter evaluation usi
14、ng back-reflected light . 15 5.1.6 Method E: Modulated phase-shift technique . 15 5.1.7 Method F: Polarization phase shift (PPS) . 15 5.1.8 Method G: Wavelength scanning OTDR and SOP Analysis (WSOSA) 16 5.2 Document structure . 16 5.3 Reference test method 16 6 Measurement configurations 16 6.1 Pass
15、ive cabling link 16 6.2 Link including amplifiers 17 6.3 Link including chromatic dispersion compensating modules 17 6.3.1 General . 17 6.3.2 Grating based DCM . 17 6.4 Link including ROADMs 17 6.4.1 General . 17 6.4.2 Multi-channel point to point configuration . 18 6.4.3 Single channel configuratio
16、n 18 7 Measurement considerations . 18 7.1 General . 18 7.2 Wavelength range . 18 7.3 PMD measurement range 18 7.4 Measurement dynamic range 19 7.5 Fibre movement 19 7.6 Input and output SOP scrambling 19 7.6.1 General . 19 7.6.2 Polarizers/scramblers 19 7.6.3 The 9-states Mueller set 20 7.6.4 Rando
17、m scrambling . 20 7.7 Polarization dependent loss 20 7.8 Amplifier considerations 20 7.8.1 General . 20 7.8.2 Optical isolators . 20 7.8.3 Wavelength range 20 IEC 61280-4-4:2017 IEC 2017 3 7.8.4 Power levels 20 7.8.5 Amplified spontaneous emission (ASE) noise 21 7.9 Considerations on location of equ
18、ipment . 21 8 Apparatus 21 8.1 General . 21 8.2 Light source and polarizers . 21 8.3 Input optics . 22 8.4 Cladding mode stripper . 22 8.5 High-order mode filter . 22 8.6 Output connection . 22 8.7 Output optics 23 8.8 Detector 23 8.9 Computer or test platform . 23 8.10 Means to reduce the effects o
19、f amplified spontaneous emission . 23 9 Sampling and specimens . 23 10 Procedure 23 11 Calculation or interpretation of results . 24 12 Documentation 24 12.1 Information required for each measurement 24 12.2 Information to be available 24 13 Specification information . 25 (normative) Fixed analyzer
20、method 26 Annex A A.1 Apparatus . 26 A.1.1 Block diagrams 26 A.1.2 Light source . 28 A.1.3 Analyzer 29 A.1.4 Optional polarization control at the input and output of the link under test 29 A.2 Procedure . 29 A.2.1 Wavelength range and increment . 29 A.2.2 Complete the scans . 30 A.3 Calculations Fou
21、rier transform . 31 A.3.1 General . 31 A.3.2 Data pre-processing and Fourier transformation 32 A.3.3 Transform data fitting. 32 A.3.4 Spectral range . 34 (normative) Stokes parameter evaluation method 36 Annex B B.1 Apparatus . 36 B.1.1 Block diagrams 36 B.1.2 Light source . 37 B.1.3 Polarimeter 37
22、B.2 Procedure . 37 B.3 Calculations 38 B.3.1 General . 38 B.3.2 Jones matrix eigenanalysis (JME) 38 B.3.3 Poincar sphere analysis (PSA) DGD calculation 40 (normative) Interferometric method 41 Annex C C.1 General . 41 4 IEC 61280-4-4:2017 IEC 2017 C.2 Traditional analysis (TINTY) 42 C.2.1 Apparatus
23、42 C.2.2 Procedure 43 C.2.3 Calculations . 44 C.3 General analysis (GINTY) . 45 C.3.1 Benefit . 45 C.3.2 Apparatus 45 C.3.3 Procedure 46 C.3.4 Calculations . 47 (informative) Stokes parameter evaluation method using back-reflected light. 49 Annex D D.1 Utility 49 D.2 Apparatus . 49 D.2.1 Block diagr
24、am 49 D.2.2 Directional coupler . 49 D.2.3 Angled connector . 49 D.2.4 Far-end termination . 49 D.3 Procedure . 50 D.4 Calculation and interpretation of results 50 (informative) Modulation phase-shift method 51 Annex E E.1 Apparatus . 51 E.1.1 Overview and block diagrams 51 E.1.2 Light source(s). 52
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