ITUTSeries G.docx

1、ITUT Series GInternational Telecommunication UnionITU-TSeriesGTELECOMMUNICATIONSTANDARDIZATION SECTOROF ITUSupplement40(11/2006) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKSOptical fibre and cable Recommendations and standards guidelineITUT G-series Recommendations Suppleme

2、nt40ITU-T G-SERIES RECOMMENDATIONSTRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKSINTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITSG.100G.199GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMSG.200G.299INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE S

3、YSTEMS ON METALLIC LINESG.300G.399GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINESG.400G.449COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONYG.450G.499TRANSMISSION MEDIA CHARACTERISTICSG.600G.699DIGITAL TERMI

4、NAL EQUIPMENTSG.700G.799DIGITAL NETWORKSG.800G.899DIGITAL SECTIONS AND DIGITAL LINE SYSTEMG.900G.999QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTSG.1000G.1999TRANSMISSION MEDIA CHARACTERISTICSG.6000G.6999DATA OVER TRANSPORT GENERIC ASPECTSG.7000G.7999PACKET OVER TRANSPORT ASPECT

5、SG.8000G.8999ACCESS NETWORKSG.9000G.9999For further details, please refer to the list of ITU-T Recommendations.Supplement40 to ITU-T G-series RecommendationsOptical fibre and cable Recommendations and standards guidelineSummaryThis Supplement provides information on the background and specifications

6、 used in the development of optical fibre and cable ITU-T Recommendations such as ITU-T G.651, ITUTG.652, ITU-T G.653, ITU-T G.654, ITU-T G.655, ITU-T G.656, ITU-T G.657 and L series. It also contains information used in the development of test method Recommendations such as ITU-T G.650.1 and ITU-T

7、G.650.2. Moreover, this Supplement maps ITUT documents to optical fibre and cable standards developed under IEC.SourceSupplement40 to ITUT G-series Recommendations was agreed on 10November2006 by ITUT Study Group15 (2005-2008).FOREWORDThe International Telecommunication Union (ITU) is the United Nat

8、ions specialized agency in the field of telecommunications. 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 Recommendations on them with a view to standardizing telecommunica

9、tions on a worldwide basis.The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITUT study groups which, in turn, produce Recommendations on these topics.The approval of ITU-T Recommendations is covered by the procedure la

10、id down in WTSA Resolution1.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.NOTEIn this publication, the expression Administration is used for conciseness to indicate both a telecommunication adm

11、inistration 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 the publication is achieved when all of these mandatory provisions are

12、 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 any party.INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility

13、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 Rights, whether asserted by ITU members or others outside of the publication

14、 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 are cautioned that this may not represent the latest information and are therefo

15、re strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/.ITU2007All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU.CONTENTS Page1 Scope 12 References 13 Definitions 43.1 Terms defined el

16、sewhere 43.2 Terms defined in this Supplement 54 Abbreviations and acronyms 65 Conventions 66 Features of existing optical fibre categories and their application areas 66.1 Attenuation properties 66.2 Dispersion properties 66.3 Bending properties 67 Relationship between fibre parameters and interfac

17、e parameters 67.1 Relationship between PMD and DGD 67.2 Transmission limitation due to dispersion properties 68 Unspecified fibre parameters and their test methods 78.1 Non-linear coefficient 78.2 Effective area Aeff 78.3 Stimulated brillouin scattering (SBS) threshold 78.4 Raman gain coefficient 78

18、.5 Microbending loss 79 Optical fibre properties for operation and maintenance 79.1 Properties of cut-off wavelength under the deployment conditions 79.2 Properties of chromatic dispersion and polarization mode dispersion 79.3 Splice loss 79.4 Input power limitation and safety aspects 79.5 Reliabili

19、ty of optical fibre cable 89.6 Optical loss properties due to hydrogen 89.7 Environmental test conditions for fibres 89.8 Optical fibre cable network maintenance 8Appendix I Standardized criteria 9I.1 Criteria for revising the optical fibre Recommendations 9I.2 Guideline for conducting measurement r

20、ound robins in Question 5 of ITU-T Study Group 15 (Q.5/15) 9Appendix II Optical fibre cable structures 10Appendix III Fibre optics hardware and passive components 11Appendix IV Construction and installation practices 12 PageAppendix V Status of optical fibre and cable specifications in ITU-T and IEC

21、 13V.1 Fibre specifications 13V.2 Fibre cable specifications 14Appendix VI Comparison of ITU-T Recommendations and IEC documents concerning test methods 15VI.1 Test methods for single-mode fibres 15VI.2 Test methods for multimode fibres 18VI.3 Documents available only in IEC and not in ITU-T 19Suppl

22、ement40 to ITU-T G-series RecommendationsOptical fibre and cable Recommendations and standards guideline1 ScopeThis fibre guideline aims at providing a road map with regard to the specifications of various kinds of fibres and their test methods, as well as the most important fibre optics hardware wh

23、ich will be very useful for engineers reading the ITU-T Recommendations and other documents to design an optical fibre network. This guideline should also make it easier for readers to correlate the specifications found in the fibre, component, terrestrial system interface, and submarine system Reco

24、mmendations currently being developed in Questions 5, 7, 6 and 8 of ITU-T Study Group 15, respectively. Moreover, this guideline provides important information for system designs and optical fibre cable installations in relation to, for example, high power limitations and reliability, which is avail

25、able to optical fibre cable installation suppliers and system designers. This guideline contains: Definitions of fibre parameters not specified in current ITU-T fibre Recommendations but very important for practical use. Features of existing optical fibre categories and their application areas. The

26、relationship between fibre parameters and interface parameters. Optical fibre properties for operation and maintenance.In the appendices, the following items are described for reference: Standardization criteria for optical fibres in ITU-T Study Group 15. Optical fibre cable structures and construct

27、ions. Fibre optics hardware and passive components mostly used in the construction of an optical network. Comparison of ITU-T Recommendations and IEC documents related to optical fibre specifications and test methods.In particular, this guideline is prepared concisely by quoting document numbers so

28、as to avoid any overlap with existing ITU-T Recommendations and Handbooks or IEC documents. This guideline would be a very useful desk book for engineers dealing with optical transmission systems. 2 ReferencesITU-T G.650.1 ITUT Recommendation G.650.1 (2004), Definitions and test methods for linear,

29、deterministic attributes of singlemode fibre and cable.ITU-T G.650.2 ITUT Recommendation G.650.2 (2005), Definitions and test methods for statistical and non-linear related attributes of singlemode fibre and cable.ITU-T G.651 ITU-T Recommendation G.651 (1998), Characteristics of a 50/125 m multimode

30、 graded index optical fibre cable.ITU-T G.652 ITUT Recommendation G.652 (2005), Characteristics of a singlemode optical fibre and cable.ITU-T G.653 ITUT Recommendation G.653 (2006), Characteristics of a dispersionshifted singlemode optical fibre and cable.ITU-T G.654 ITUT Recommendation G.654 (2006)

31、, Characteristics of a cut-off shifted single-mode optical fibre and cable.ITU-T G.655 ITUT Recommendation G.655 (2006), Characteristics of a nonzero dispersion-shifted singlemode optical fibre and cable.ITU-T G.656 ITUT Recommendation G.656 (2006), Characteristics of a fibre and cable with non-zero dispersion for wideband optical transport.ITU-T G.657 ITU-T Recommendation G.657 (2006), Characteristics of a bending loss insensitive single mode optical fibre and cable for the access network.ITU-T G.663 ITU-