1、 IEC 60728-6 Edition 3.0 2011-04 INTERNATIONAL STANDARD Cable networks for television signals,sound signals and interactive services Part 6:Optical equipment IEC 60728-6:2011(E)Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No
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9、ntre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC 60728-6Edition
10、3.0 2011-04INTERNATIONAL STANDARD Cable networks for television signals,sound signals and interactive services Part 6:Optical equipment INTERNATIONAL ELECTROTECHNICAL COMMISSION XBICS 33.060.40;33.160.99 PRICE CODEISBN 978-2-88912-427-5 Registered trademark of the International Electrotechnical Comm
11、ission Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 60728-6 IEC:2011(E)CONTENTS FOREWORD.6 INTRODUCTION.8 1 Scope.9 2 Normative references.9 3 T
12、erms,definitions,symbols and abbreviations.11 3.1 Terms and definitions.11 3.2 Symbols.18 3.3 Abbreviations.19 4 Methods of measurement.20 4.1 Measurement requirements.20 4.1.1 General.20 4.1.2 Input specification.20 4.1.3 Measurement conditions.20 4.2 Optical power.21 4.3 Loss,isolation,directivity
13、 and coupling ratio.21 4.3.1 General.21 4.3.2 Measurement requirements.21 4.3.3 Principle of measurement.21 4.4 Return loss.22 4.5 Saturation output power of an optical amplifier.22 4.5.1 Purpose.22 4.5.2 Procedure.22 4.6 Centroidal wavelength and spectral width under modulation.22 4.7 Linewidth and
14、 chirping of transmitters with single mode lasers.23 4.7.1 Purpose.23 4.7.2 Equipment required.23 4.7.3 General measurement requirements.23 4.7.4 Procedure.23 4.7.5 Potential sources of error.25 4.8 Optical modulation index.25 4.8.1 Purpose.25 4.8.2 Equipment required.25 4.8.3 Procedure.25 4.8.4 Pot
15、ential sources of error.26 4.9 Reference output level of an optical receiver.26 4.9.1 Purpose.26 4.9.2 Equipment required.26 4.9.3 General measurement requirements.27 4.9.4 Procedure.27 4.9.5 Potential sources of error.27 4.10 Slope and flatness.28 4.10.1 Purpose.28 4.10.2 Equipment required.28 4.10
16、.3 Procedure.28 4.10.4 Potential sources of error.29 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.60728-6 IEC:2011(E)3 4.11 Composite second order distortion(CSO)of optical transmitters.29 4.11.1 Purpose.29 4.11.2 Equipment required.30 4.11.3 Procedure.30 4.11.4 Potential sources of error.30 4.12 Composite triple beats(CTB)of optical transm
