IEC_61280-1-3-2021.pdf

IEC 61280-1-3 Edition 3.0 2021-07 INTERNATIONAL STANDARD Fibre optic communication subsystem test procedures Part 1-3:General communication subsystems Measurement of central wavelength,spectral width and additional spectral characteristics IEC 61280-1-3:2021-07(en)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2021 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 or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb infoiec.ch CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigendum or an amendment might have been published.IEC publications search-webstore.iec.ch/advsearchform The advanced search enables to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available online and once a month by email.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:salesiec.ch.IEC online collection-oc.iec.ch Discover our powerful search engine and read freely all the publications previews.With a subscription you will always have access to up to date content tailored to your needs.Electropedia-www.electropedia.org The worlds leading online dictionary on electrotechnology,containing more than 22 000 terminological entries in English and French,with equivalent terms in 18 additional languages.Also known as the International Electrotechnical Vocabulary(IEV)online.IEC 61280-1-3 Edition 3.0 2021-07 INTERNATIONAL STANDARD Fibre optic communication subsystem test procedures Part 1-3:General communication subsystems Measurement of central wavelength,spectral width and additional spectral characteristics INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.180.01 ISBN 978-2-8322-9954-8 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinside 2 IEC 61280-1-3:2021 IEC 2021 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms,definitions and abbreviated terms.6 3.1 Wavelength.6 3.2 Spectral width.7 3.3 Additional spectral characteristics.7 3.4 Abbreviated terms.8 4 Apparatus.8 4.1 Calibrated optical spectrum analyzer(OSA).8 4.2 Calibrated optical wavelength meter(OWM).8 4.3 Power supplies.9 4.4 Input signal source or modulator.9 4.5 Test cord.9 5 Test sample.9 6 Procedure(method A).9 6.1 General.9 6.2 Setup.10 6.3 Adjustment of spectrum analyzer controls.10 6.4 Setting of optical wavelength meter.11 7 Procedure(method B).11 7.1 Setup.11 7.2 Adjustment of spectrum analyzer controls.11 7.3 Setting of optical wavelength meter.11 7.4 Continuous LED and SLM spectra.12 7.5 Discrete MLM spectra.12 7.6 SLM spectra.12 8 Calculation.13 8.1 General.13 8.2 Centre wavelength.13 8.2.1 Continuous LED spectra.13 8.2.2 Discrete MLM spectra.13 8.3 Centroidal wavelength.13 8.4 Peak wavelength.14 8.4.1 Continuous LED and SLM spectra.14 8.4.2 Discrete MLM spectra.14 8.5 RMS spectral width(rms).14 8.6 n-dB-down spectral width(n-dB).14 8.7 Full-width at half-maximum spectral width(fwhm).14 8.7.1 Continuous LED spectra.14 8.7.2 Discrete MLM spectra.15 8.8 Side-mode suppression ratio(SMSR).15 8.9 Signal-to-source spontaneous emission ratio(SSER).15 9 Test results.15 9.1 Required information.15 IEC 61280-1-3:2021 IEC 2021 3 9.2 Information to be available on request.16 10 Examples of results.16 Bibliography.21 Figure 1 Example of a LED optical spectrum.16 Figure 2 Typical spectrum analyzer output for MLM laser.18 Figure 3 fwhm spectral width measurement for MLM laser.18 Figure 4 fwhm spectral width calculation for MLM laser.19 Figure 5 Peak emission wavelength and 30-dB measurement for SLM laser.19 Figure 6 Resolution bandwidth(RBW)dependence of SMSR for SLM laser.20 Figure 7 Signal-to-source spontaneous emission ratio measurement for SLM laser.20 Table 1 Measurement points for LED spectrum from Figure 1.17