1、3404583 00b4835 2LT = - EZ!iN TELECOMMUNICATION STANDARD I-ETS 300 228 June 1993 Source: ETSI TC-TM Reference: DITTM-1020 UDC: 621.39 Key words: Transmission, multiplexing, optical fibre Transmission and Multiplexing (TM); ITU-T Recommendation G .653-type dispersion shifted single-mode optical fibre
2、 ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: 06921 Sophia Antipolis Cedex - FRANCE Office address: Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE Tel.: + 33 92 94 42 O0 - Fax: + 33 93 65 47 16 0 European Telecommunications Standards Institute 1 99
3、3. All rights reserved. No part may be reproduced except as authorised by written permission. The copyright and the foregoing restriction on reproduction extend to all media in which the information may be embodied. rn 3404583 O064836 I156 m . Page 2 I-ETS 300 2281993 Whilst every care has been take
4、n in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Standards Approval Dept.” at the address shown on the title page. 3404583 0064837 O92 Page 3 I-ETS 300 2281
5、993 Contents Foreword . 5 1 Scope . 7 2 Normative references . 7 3 Definitions 7 4 General . 7 5 Reference Test Methods and Alternative Test Methods 7 6 Material characteristics 7 7 Geometrical characteristics . 7 8 Transmission characteristics 8 History . 9 - 3404583 0064838 T29 * 4 Page 5 LETS 300
6、 228:1993 Foreword This Interim European Telecommunication Standard (I-ETS) has been produced by the Transmission and Multiplexing (TM) Technical Committee of the European Telecommunications Standards Institute (ETSI). An ETSI standard may be given I-ETS status as it is regarded either as a provisio
7、nal solution ahead of a more advanced standard, or because it is immature and requires a trial period. The life of an I-ETS is limited, at first, to three years after which it can be converted into a European Telecommunication Standard (ETS), have its life extended for a further two years, be replac
8、ed by a new version of the I-ETS or, finally, be withdrawn. This I-ETS concerns the functional requirements for single-mode optical fibre to be used in cables for duct, directly buried and aerial cable applications. References are made to test methods and acceptance criteria in LETS 300 227 121 whic
9、h are normative to this I-ETS (see Clause 2, “Normative references“). This I-ETS has been produced in accordance with a specialised agreement on “Work Repartition and Co-operation for Standardisation concerning fibre optics“ and is part of the CEN/CENELEC/ETSI co-operation agreement. Previous page i
10、s blank 3404583 00b4839 9b5 D Page 7 I-ETS 300 2281993 7 Scope This Interim European Telecommunication Standard (I-ETC) specifies the functional requirements of silica, primary coated, dispersion shifted single-mode optical fibre used in cables for duct, directly buried or aerial applications. The r
11、equirements take into account ITU-T Recommendation G. 653 I 1 “Characteristics of a dispersion shifted single-mode optical fibre cable“. The functional requirements specified in this I-ETS refer to uncabled fibre. 2 Normative references This I-ETS incorporates by dated or undated references provisio
12、ns from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this I-ETS only when incorporated in it by amendment or
13、revision. For undated references the latest edition of the publication referred to applies. Il 121 ITU-T Recommendation G.653 (1 993): “Characteristics of dispersion shifted single-mode optical fibre cable“. I-ETS 300 227 (1 993): “Transmission and Multiplexing (TM); ITU-T Recommendation G.652-type
14、single-mode optical fibre“. NOTE: References to test methods and acceptance criteria in certain ITU, CECC and IEC documents are made in I-ETS 300 227 121 which are also, therefore, normative to this I-ETS. 3 Definitions For the purposes of this I-ETS, the definitions provided in I-ETS 300 227 21, Cl
15、ause 3 apply. 4 General The test methods referred to in this specification are Reference Test Methods and Alternative Test Methods. Alternative Test Methods may be used for practical tests. Certain tests are not required to be conducted on a routine basis and are identified as such in the relevant C
16、lauses. The frequency of all tests shall be agreed between the user and the manufacturer under a capability approval procedure. Where reference is made under “Acceptance criteria“ to “no change in attenuation“ then this shall be taken as being s 0,05 dB. This specification is identical to I-ETS 300
17、227 121 except where indicated. 5 Reference Test Methods and Alternative Test Methods See I-ETS 300 227 21. 6 Material characteristics See I-ETS 300 227 121. 7 Geometrical characteristics See I-ETS 300 227 21. Previous page is blank W 3404583 0064840 687 W Page 8 8 Transmission characteristics I-ETS
18、 300 228:1993 See Clause 8 of I-ETS 300 227 t21 except for the following subclauses: 8.3 Mode field diameter Test wavelength: 1550 nm. Acceptance criteria: Range of nominals: Tolerance: =lo%. The nominal value shall be agreed between the user and the manufacturer. 7,O pm to 8,5 pm. 8.4 Cut-off wavel
19、ength U,) Accemance criteria: Upper limit: I 1350 nm. The actual values shall be agreed between the user and manufacturer. 8.5 Chromatic dispersion Non-routine test AcceDtance criteria: As for ITU-T Recommendation G.653 Ill, paragraph 2.2. 8.6 Attenuation coefficient AcceDtance criteria: 1310nm: I 0,50 dBlkm. 1550 nm: I 0,30 dB/km. Lower values may be agreed between user and manufacturer. 3404583 0064841 513 June 1993 Page 9 I-ETS 300 228:1993 First Edition History Document history
