IEC_TR_61282-8-2006.pdf

TECHNICAL REPORT IECTR 61282-8 First edition2006-11 Fibre optic communication system design guides Part 8:Calculating dispersion penalty from measured time-resolved chirp data Reference number IEC/TR 61282-8:2006(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editions The IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2.Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating to this publication,including its validity,is available in the IEC Catalogue of publications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication,as well as the list of publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publications The on-line catalogue on the IEC web site(www.iec.ch/searchpub)enables you to search by a variety of criteria including text searches,technical committees and date of publication.On-line information is also available on recently issued publications,withdrawn and replaced publications,as well as corrigenda.IEC Just Published This summary of recently issued publications(www.iec.ch/online_news/justpub)is also available by email.Please contact the Customer Service Centre(see below)for further information.Customer Service Centre If you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.ch Tel:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TECHNICAL REPORT IECTR 61282-8 First edition2006-11 Fibre optic communication system design guides Part 8:Calculating dispersion penalty from measured time-resolved chirp data PRICE CODE IEC 2006 Copyright-all rights reserved 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 the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch R For price,see current catalogueCommission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TR 61282-8 IEC:2006(E)CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Terms and definitions.6 4 Measuring dispersion penalty using a bit-error-ratio test set.7 5 Obtaining time-resolved chirp data.8 6 Calculating dispersion penalty from time-resolved chirp data.9 6.1 Calculate BER for a particular condition.9 6.2 Calculate dispersion penalty.10 6.3 Calculate transmitter and dispersion penalty.11 6.4 Calculate total transmitter power penalty.11 7 An example measurement and calculation of power penalties.11 8 A comparison of dispersion penalty measurements from BER and TRC measurements.12 Annex A(informative)Data analysis of bit error ratio versus received power in digital systems.13 Bibliography.20 Figure 1 Equipment setup for direct power penalty measurements.8 Figure 2 Typical TRC data suitable for dispersion penalty calculations.9 Figure 3 An example measurement of the three power penalties.12 Figure 4 Comparison of dispersion penalty results for measurements with a BER test set and for calculation from TRC data.12 Figure A.1 Plot of Equation(A.1)with SNR plotted linearly.14 Figure A.3 Example plot and analysis using the exact procedure.18 Figure A.4 Example plot and analysis using the log-log procedure.19 Table A.1 Values for BER versus SNR.15 Table A.2 Experimental data for exact linearization.18 Table A.3 Experimental data for log-log analysis.19 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TR 61282-8 IEC:2006(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIBRE OPTIC COMMUNICATION SYSTEM DESIGN GUIDES Part 8:Calculating dispersion penalty from measured time-resolved chirp data 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