prEN IEC 60728-114:2023
(Main)Optical transmission systems using RFoG technology (TA5)
Optical transmission systems using RFoG technology (TA5)
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste - Teil 114: Optische Übertragungssysteme mit RFoG-Technik
Systèmes de transmission optique qui utilisent la technologie RFoG (TA5)
Optični prenosni sistemi s tehnologijo RFoG (TA5)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2023
Optični prenosni sistemi s tehnologijo RFoG (TA5)
Optical transmission systems using RFoG technology (TA5)
Ta slovenski standard je istoveten z: prEN IEC 60728-114:2023
ICS:
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
100/3883/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60728-114 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-03-24 2023-06-16
SUPERSEDES DOCUMENTS:
100/3766/CD, 100/3805B/CC
IEC TA 5 : CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES
SECRETARIAT: SECRETARY:
Japan Mr Hiroo Tamura
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for Vote
(CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of
• any relevant patent rights of which they are aware and to provide supporting documentation,
• any relevant “in some countries” clauses to be included should this proposal proceed. Recipients are reminded that the
enquiry stage is the final stage for submitting "in some countries" clauses. See AC/22/2007.
TITLE:
Optical transmission systems using RFoG technology (TA5)
PROPOSED STABILITY DATE: 2027
NOTE FROM TC/SC OFFICERS:
This project was approved to proceed to the CDV stage at the TA5 meeting that was held on November 18.
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
IEC CDV 60728-114 © IEC 2023 – 2 –
2 CONTENTS
4 CONTENTS . 2
5 FOREWORD . 5
6 INTRODUCTION . 7
7 1 Scope . 8
8 2 Normative references . 8
9 3 Terms, definitions, symbols and abbreviations . 10
10 3.1 Terms and definitions . 10
11 3.2 Symbols . 15
12 3.3 Abbreviations . 15
13 4 System reference model . 16
14 5 RFoG ONU reference architecture . 17
15 6 Method of measurements . 19
16 6.1 Optical power . 19
17 6.2 Centroidal wavelength and spectral width under modulation. 19
18 6.3 Optical wavelength. 19
19 6.4 Linewidth and chirping of transmitters with single mode lasers . 19
20 6.5 Optical modulation index . 19
21 6.6 Reference output level of an optical receiver . 19
22 6.7 Noise parameters of optical transmitters and optical receivers . 20
23 6.8 Relative intensity noise (RIN), optical modulation index and equivalent
24 input noise current (EINC) . 20
25 6.9 Signal level and signal-to-noise ratio . 20
26 6.10 Noise power ratio (NPR) . 20
27 6.11 Signal-to-noise ratio defined by optical signal . 20
28 6.12 Signal-to-crosstalk ratio (SCR) . 20
29 7 System performance requirements . 21
30 7.1 Digital data system . 21
31 7.1.1 ODN . 21
32 7.1.2 Performance allocation . 21
33 7.2 Forward path and return path frequency split . 22
34 8 RFoG equipment specifications . 22
35 8.1 General specifications . 22
36 8.1.1 Safety . 22
37 8.1.2 Electromagnetic compatibility (EMC) . 22
38 8.1.3 Environmental conditions . 23
39 8.1.4 Marking . 23
40 8.2 R-ONU . 23
41 8.2.1 Indicators . 23
42 8.2.2 R-ONU optical isolation specifications . 24
43 8.2.3 R-ONU’s optional pass through filter . 24
44 8.2.4 R-ONU forward path receiver specifications . 25
45 8.2.5 Return path performance of R-ONU . 27
46 8.3 Headend specifications . 31
– 3 – IEC CDV 60728-114 @ IEC2023
47 8.3.1 Headend forward path specifications . 31
48 8.3.2 Headend return path specifications . 31
49 Annex A (informative) Implementation notes . 33
50 Annex B (informative) System loss specification . 35
51 B.1 General . 35
52 B.2 Forward path considerations . 35
53 B.3 Return path considerations . 36
54 Annex C (informative) Optical beat interference . 39
55 C.1 General . 39
56 C.2 Operating conditions of ODN . 39
57 C.3 Operating conditions of optical receiver at the headend system . 39
58 C.4 Operating conditions of CMTS . 40
59 C.5 Environmental conditions . 40
60 C.6 Relation between optical transmission loss and OMI . 40
61 C.7 Design margin of ODN . 41
62 C.8 Example of system design . 42
63 C.9 Method of measurement of OBI . 43
64 C.9.1 Purpose . 43
65 C.9.2 Measurement setup . 43
66 C.9.3 Example of measurement conditions . 43
67 C.9.4 Procedure . 44
68 C.9.5 Presentation of results . 44
69 C.10 Method of measurement of OBI (measurement with CW signals) . 44
70 C.10.1 Purpose . 44
71 C.10.2 Measurement setup . 44
72 C.10.3 Procedure . 45
73 Annex D (informative) Outdoor housings for R-ONU protection . 46
74 Annex E (informative) Effect of off-state optical power on SNR ratio of transmission
75 signal . 47
76 Bibliography . 49
78 Figure 1 – Optical system reference model for RFoG . 17
79 Figure 2 – Principle schematics of R-ONU . 18
80 Figure 3 – Measurement of optical wavelength using WDM coupler . 19
81 Figure 4 – Optional xPON pass through filter block diagram . 24
82 Figure 5 – R-ONU turn-on and turn-off diagram . 31
83 Figure A.1 – Placement of attenuators when system loss is too low . 34
84 Figure B.1 – Performance allocation of the return path transmission system . 36
85 Figure B.2 – Section SNR specification for SDU and MDU in-house cabling. 38
86 Figure C.1 – Optical transmission loss and OMI . 41
87 Figure C.2 – ODN design margin . 41
88 Figure C.3 – Setup used for the measurement of OBI . 43
89 Figure C.4 – Setup used for the measurement of OBI (CW method) . 45
91 Table 1 – ODN specifications . 21
IEC CDV 60728-114 © IEC 2023 – 4 –
a
92 Table 2 – RF frequencies . 22
93 Table 3 – R-ONU Optical Isolation . 24
94 Table 4 – R-ONU’s optional xPON pass through filter . 25
95 Table 5 – Classification of R-ONU optical receivers . 25
96 Table 6 – Data publication requirements for R-ONU optical receivers . 26
97 Table 7 – Recommendations for R-ONU optical receivers . 26
98 Table 8 – Performance requirements for R-ONU optical receivers . 27
99 Table 9 – Classes of optical return path transmitters . 27
100 Table 10 – Data publication requirements for optical return path transmitters . 27
101 Table 11 – Performance requirements for optical parameters and interfaces . 28
102 Table 12 – Electrical properties requirements for R-ONU optical return path
103 transmitters. 28
104 Table 13 – R-ONU turn-on and turn-off specifications . 29
105 Table 14 – Data publication requirements for return path optical receivers . 32
106 Table 15 – Performance requirements for optical return path receivers . 32
107 Table C.1 – Operating conditions related to O
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