ITU-T SERIES G SUPP 47-2012 General aspects of optical fibres and cables (Study Group 15)《光学纤维和电缆的一般方面研究组15》.pdf
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1、 International Telecommunication Union ITU-T Series GTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 47(09/2012) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS General aspects of optical fibres and cables ITU-T G-series Recommendations Supplement 47 ITU-T G-SERIES
2、RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON MET
3、ALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.69
4、9 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7
5、000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. G series Supplement 47 (09/2012) i Supplement 47 to ITU-T G-series Recommendations General aspects of optical fibres and cables Summary Supplement
6、 47 to ITU-T G-series Recommendations provides information on the general transmission characteristics of single-mode optical fibres and cables specified in the ITU-T G.65x-series of Recommendations related to the practical use condition. It covers the environmental and length-related characteristic
7、 of ITU-T G.65x-series optical fibres and cables. The fibre material-related characteristics are also described in Appendix I. Version 2 of this supplement introduces the general aspect of multi-path interference (MPI) in an optical fibre in order to support newly established test methods for cohere
8、nt MPI which can be found in Appendix IV of Recommendation ITU-T G.650.1. History Edition Recommendation Approval Study Group 1.0 ITU-T G Suppl. 47 2009-10-09 15 2.0 ITU-T G Suppl. 47 2012-09-21 15 ii G series Supplement 47 (09/2012) FOREWORD The International Telecommunication Union (ITU) is the Un
9、ited Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recomme
10、ndations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The ap
11、proval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administrati
12、on“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this publication is voluntary. However, the publication may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with
13、 the publication is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the publication is required of an
14、y party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this publication may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property
15、 Rights, whether asserted by ITU members or others outside of the publication development process. As of the date of approval of this publication, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this publication. However, implementers ar
16、e cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2013 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permissi
17、on of ITU. G series Supplement 47 (09/2012) iii Table of Contents Page 1 Scope 1 2 References. 1 3 Definitions 4 4 Abbreviations and acronyms 4 5 Environmental characteristics of optical fibre and cable 5 5.1 Temperature dependence of chromatic dispersion . 5 5.2 Temperature dependence of polarizati
18、on mode dispersion 5 6 Length-related characteristics of optical fibre and cable 6 6.1 Cut-off wavelength . 6 6.2 SBS power rating 8 6.3 FWM efficiency 9 Appendix I Intrinsic material characteristics of optical fibre . 11 I.1 Rayleigh scattering . 11 I.2 Material dispersion . 11 I.3 Non-linear refra
19、ctive index . 12 I.4 Raman gain coefficient . 12 G series Supplement 47 (09/2012) 1 Supplement 47 to ITU-T G-series Recommendations General aspects of optical fibres and cables 1 Scope The purpose of this supplement is to understand the transmission properties of the cabled single-mode fibres during
20、 use, and to promote the proper and effective use of ITU-T G.65x-series Recommendations for single-mode fibres and cables. In particular, when upgrading existing systems to high-speed transmission systems based on the installed transmission line and/or designing a new transmission line for a high-sp
21、eed and large capacity transmission system, the system operators and designers should be provided with useful information that is not shown in the fibre Recommendations. This supplement covers the general transmission characteristics of single-mode optical fibres and cables related to the practical
22、use conditions. This supplement contains: environmental characteristics of optical fibres and cables, length-related characteristics of optical fibres and cables. In Appendix I, the optical fibre characteristics related to the fibre material such as Rayleigh scattering and material dispersion are de
23、scribed for reference. This supplement will provide useful guidelines when designing the transmission lines and/or systems. Moreover, it should be updated as and when optical fibre technologies are updated. 2 References ITU-T G.650.1 Recommendation ITU-T G.650.1 (2010), Definitions and test methods
24、for linear, deterministic attributes of single-mode fibre and cable. ITU-T G.650.2 Recommendation ITU-T G.650.2 (2007), Definitions and test methods for statistical and non-linear related attributes of single-mode fibre and cable. ITU-T G.652 Recommendation ITU-T G.652 (2009), Characteristics of a s
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