IEC 60728-14:2014

IEC 60728-14 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –
Part 14: Optical transmission systems using RFoG technology

Réseaux de distribution par câbles pour signaux de télévision, signaux de
radiodiffusion sonore et services interactifs –
Partie 14: Systèmes de transmission optique appliquant la technologie RFoG
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IEC 60728-14 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable networks for television signals, sound signals and interactive services –

Part 14: Optical transmission systems using RFoG technology

Réseaux de distribution par câbles pour signaux de télévision, signaux de

radiodiffusion sonore et services interactifs –

Partie 14: Systèmes de transmission optique appliquant la technologie RFoG

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 33.060.40; 33.160; 33.180 ISBN 978-2-8322-1439-8

– 2 – IEC 60728-14:2014 © IEC 2014
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions, symbols and abbreviations . 10
3.1 Terms and definitions . 10
3.2 Symbols . 16
3.3 Abbreviations . 16
4 System reference model . 17
5 RFoG ONU reference architecture . 18
6 Method of measurements . 19
6.1 Optical power . 19
6.2 Centroidal wavelength and spectral width under modulation . 19
6.3 Optical wavelength . 20
6.4 Linewidth and chirping of transmitters with single mode lasers . 20
6.5 Optical modulation index . 20
6.6 Reference output level of an optical receiver. 20
6.7 Noise parameters of optical transmitters and optical receivers . 20
6.8 Relative intensity noise (RIN), optical modulation index and equivalent
input noise current (EINC) . 20
6.9 Carrier level and carrier-to-noise ratio . 20
6.10 Noise power ratio (NPR) . 20
6.11 Carrier-to-noise ratio defined by optical signal . 21
6.12 Carrier-to-crosstalk ratio (CCR) . 21
7 System performance requirements . 21
7.1 Digital data system . 21
7.1.1 ODN . 21
7.1.2 Performance allocation . 21
7.2 Forward path and return path frequency split . 22
8 RFoG equipment specifications . 22
8.1 General specifications . 22
8.1.1 Safety . 22
8.1.2 Electromagnetic compatibility (EMC) . 22
8.1.3 Environmental conditions . 22
8.1.4 Marking . 23
8.2 R-ONU . 23
8.2.1 Indicators . 23
8.2.2 R-ONU forward path receiver specifications . 23
8.2.3 Return path performance of R-ONU . 25
8.2.4 Remote control functions . 29
8.3 Headend specifications . 34
8.3.1 Headend forward path specifications . 34
8.3.2 Headend return path specifications: R-RRX . 34

Annex A (informative) Implementation notes . 36
Annex B (informative) System loss specification . 38
B.1 General . 38
B.2 Forward path considerations . 38
B.3 Return path considerations . 39
Annex C (informative) Optical beat interference . 42
C.1 General . 42
C.2 Operating conditions of ODN . 42
C.3 Operating conditions of optical receiver at the headend system. 42
C.4 Operating conditions of CMTS . 43
C.5 Environmental conditions. 43
C.6 Relation between optical transmission loss and OMI . 43
C.7 Design margin of ODN . 44
C.8 Example of system design . 45
C.9 Method of measurement of OBI . 46
C.9.1 Purpose . 46
C.9.2 Measurement setup . 46
C.9.3 Example of measurement conditions . 46
C.9.4 Procedure . 47
C.9.5 Presentation of results . 47
C.10 Method of measurement of OBI (measurement with CW signals) . 47
C.10.1 Purpose . 47
C.10.2 Measurement setup . 47
C.10.3 Procedure . 48
Annex D (normative) Optional remote control manager . 49
Annex E (informative) Outdoor housings for R-ONU protection . 50
Annex F (informative) Effect of off-state optical power
...