IEC 60728-6:2011

Cable networks for television signals, sound signals and interactive services - Part 6: Optical equipment

IEC 60728-6:2011 lays down the measuring methods, performance requirements and data publication requirements of optical equipment of cable networks for television signals, sound signals and interactive services. This third edition cancels and replaces the second edition published in 2003 of which it constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition:
- The normative references were updated.
- The methods of measurement for optical power and return loss were substituted by references to other standards.
- The method of measurement for polarization dependent loss was deleted.
- A method of measurement for carrier-to-crosstalk ratio (CCR) was added.
- The methods of measurement for CSO and CTB of optical amplifiers were substituted by a method of measurement for microscopic gain tilt of optical amplifiers.
This parameter can be used for calculating the second order distortion of optical amplifiers according to the method described in the new Annex B. New classes for optical transmitters and receivers have been defined.

Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs – Partie 6: Matériels optiques

L'IEC 60728-6:2011 présente les méthodes de mesure, les exigences de performance et les exigences de publication de données des matériels optiques des réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs.
La présente norme
• s'applique à tous les émetteurs, récepteurs, amplificateurs, coupleurs directifs, isolateurs, dispositifs de multiplexage, connecteurs et épissures, optiques, utilisés dans les réseaux de distribution par câbles;
• couvre la gamme de fréquences de 5 MHz à 3 000 MHz;
• identifie les exigences de performance garanties pour certains paramètres;
• présente les exigences de publication des données avec une performance garantie;
• décrit les méthodes de mesure pour l'essai de conformité.
Toutes les exigences et les données publiées concernent les niveaux de performance minimums dans la gamme de fréquence spécifiée et dans des conditions d'adaptation correcte, tels que pouvant s'appliquer aux réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs.
L'IEC 60728-6:2011 annule et remplace la deuxième édition parue en 2003, dont elle constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente.
• Les références normatives ont été mises à jour.
• Les méthodes de mesure de la puissance optique et de l’affaiblissement de réflexion ont été remplacées par des références à d’autres normes.
• La méthode de mesure de l’affaiblissement dépendant de la polarisation a été supprimée.
• Une méthode de mesure du rapport porteuse sur diaphonie (CCR) a été ajoutée.
• Les méthodes de mesure de CSO (Distorsion composite d’ordre deux) et de CTB (Battement triple composite) des amplificateurs optiques ont été remplacées par une méthode de mesure de la variation de gain microscopique des amplificateurs optiques. Ce paramètre peut être utilisé pour calculer la distorsion d’ordre deux des amplificateurs optiques selon la méthode décrite à la nouvelle Annexe B.
• De nouvelles classes d’émetteurs et récepteurs optiques ont été définies.

General Information

• Status: Published
• Publication Date: 10-Apr-2011
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.060.40 - Cabled distribution systems
• ICS: 33.160.99 - Other audio, video and audiovisual equipment
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Drafting Committee: WG 3 - TC 100/TA 5/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 31-May-2011
• Completion Date: 11-Apr-2011

Relations

• Revises: IEC 60728-6:2003 - Cable networks for television signals, sound signals and interactive services - Part 6: Optical equipment
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60728-6 ®
Edition 3.0 2011-04
INTERNATIONAL
STANDARD
Cable networks for television signals, sound signals and interactive services –
Part 6: Optical equipment
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 IEC's 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.

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IEC 60728-6 ®
Edition 3.0 2011-04
INTERNATIONAL
STANDARD
Cable networks for television signals, sound signals and interactive services –
Part 6: Optical equipment
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 33.060.40; 33.160.99 ISBN 978-2-88912-427-5
– 2 – 60728-6 © IEC:2011(E)
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references. 9
3 Terms, 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 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 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 Potential 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
4.10.3 Procedure . 28
4.10.4 Potential sources of error . 29

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 transmitters . 30
4.12.1 Purpose . 30
4.12.2 Equipment required . 31
4.12.3 Procedure . 31
4.12.4 Potential sources of error . 31
4.13 Composite crossmodulation of optical transmitters . 31
4.13.1 Purpose . 31
4.13.2 Equipment required . 32
4.13.3 Procedure . 32
4.13.4 Potential sources of error . 34
4.14 Receiver intermodulation . 34
4.14.1 Purpose . 34
4.14.2 Equipment required . 34
4.14.3 General measurement requirements . 35
4.14.4 Procedure . 35
4.14.5 Potential sources of error . 36
4.15 Microscopic gain tilt of optical amplifiers . 36
4.15.1 Purpose . 36
4.15.2 Equipment required . 36
4.15.3 Procedure . 37
4.15.4 Potential sources of error . 38
4.16 Noise parameters of optical transmitters and optical receivers . 38
4.16.1 Purpose . 38
4.16.2 Equipment required . 38
4.16.3 General measurement requirements . 39
4.16.4 Procedure . 40
4.16.5 Relative intensity noise . 42
4.16.6 Equivalent input noise current density . 42
4.16.7 Potential sources of error . 42
4.17 Method for combined measurement of relative intensity noise (RIN), optical
modulation index and equivalent input noise current . 43
4.17.1 Purpose . 43
4.17.2 Equipment required . 43
4.17.3 General measurement conditions . 44
4.17.4 Procedure . 44
4.17.5 Potential sources of error . 45
4.18 Noise figure of optical amplifiers . 45
4.19 Influence of fibre . 45
4.19.1 Purpose . 45
4.19.2 Equipment required . 45
4.19.3 Procedure . 45
4.19.4 Potential sources of error . 45
4.20 SBS threshold . 46

– 4 – 60728-6 © IEC:2011(E)
4.20.1 Purpose . 46
4.20.2 Equipment required . 46
4.20.3 Procedure . 46
4.20.4 Potential sources of error . 47
4.21 Carrier-to-crosstalk ratio (CCR) . 47
4.21.1 Purpose . 47
4.21.2 Equipment required . 47
4.21.3 Procedure . 47
4.21.4 Potential sources of error .
...

IEC 60728-6 ®
Edition 3.0 2011-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –
Part 6: Optical equipment
Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 6: Matériels optiques
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 IEC's 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.

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International Standards for all electrical, electronic and related technologies.

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IEC 60728-6 ®
Edition 3.0 2011-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –

Part 6: Optical equipment
Réseaux de distribution par câbles pour signaux de télévision, signaux de

radiodiffusion sonore et services interactifs –

Partie 6: Matériels optiques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.060.40; 33.160.99 ISBN 978-2-8322-1036-5

– 2 – IEC 60728-6:2011 © IEC:2011
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, 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 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 . 23
4.7 Linewidth and 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 . 24
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 Potential 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
4.10.3 Procedure . 28
4.10.4 Potential sources of error . 29

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 transmitters . 30
4.12.1 Purpose . 30
4.12.2 Equipment required . 31
4.12.3 Procedure . 31
4.12.4 Potential sources of error . 31
4.13 Composite crossmodulation of optical transmitters . 31
4.13.1 Purpose . 31
4.13.2 Equipment required . 32
4.13.3 Procedure . 32
4.13.4 Potential sources of error . 34
4.14 Receiver intermodulation . 34
4.14.1 Purpose . 34
4.14.2 Equipment required . 34
4.14.3 General measurement requirements . 35
4.14.4 Procedure . 35
4.14.5 Potential sources of error . 36
4.15 Microscopic gain tilt of optical amplifiers. 36
4.15.1 Purpose . 36
4.15.2 Equipment required . 36
4.15.3 Procedure . 37
4.15.4 Potential sources of error . 38
4.16 Noise parameters of optical transmitters and optical receivers . 38
4.16.1 Purpose . 38
4.16.2 Equipment required . 38
4.16.3 General measurement requirements .
...