IEC 60793 2 Edition 8 0 201 5 1 1 INTERNATIONAL STANDARD NORME INTERNATIONALE Optical fibres – Part 2 Product specifications – General Fibres optiques – Partie 2 Spécifications de produits – Généralit[.]
I E C 60 -2 ® Edition 8.0 201 5-1 I N TE RN ATI ON AL S TAN D ARD N ORM E I N TE RN ATI ON ALE Opti cal fi bres – P art : P rod u ct s pe ci fi cati on s – G en eral F i bres opti q u es – IEC 60793-2:201 5-1 (en-fr) P arti e : S péci fi cati on s d e prod u i ts – G én éral i tés colour i n sid e T H I S P U B L I C AT I O N I S C O P YRI G H T P RO T E C T E D C o p yri g h t © I E C , G e n e v a , S wi tz e rl a n d All rights reserved Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester If you have any questions about I EC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local I EC member National Committee for further information Droits de reproduction réservés Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur Si vous avez des questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence IEC Central Office 3, rue de Varembé CH-1 21 Geneva 20 Switzerland Tel.: +41 22 91 02 1 Fax: +41 22 91 03 00 info@iec.ch www.iec.ch Ab ou t th e I E C The I nternational Electrotechnical Commission (I EC) is the leading global organization that prepares and publishes I nternational Standards for all electrical, electronic and related technologies Ab o u t I E C p u b l i ca ti o n s The technical content of IEC publications is kept under constant review by the IEC Please make sure that you have the latest edition, a corrigenda or an amendment might have been published I E C Catal og u e - 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webstore i ec ch /csc Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csc@iec.ch I E C 60 -2 ® Edition 8.0 201 5-1 I N TE RN ATI ON AL S TAN D ARD N ORM E I N TE RN ATI ON ALE colour i n sid e Opti cal fi bres – P art : P rod u ct s peci fi cati on s – G e n eral F i bre s opti q u e s – P arti e : S péci fi cati on s d e prod u i ts – G én é ral i tés INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 33.1 80.1 ISBN 978-2-8322-2987-3 Warn i n g ! M ake s u re th at you obtai n ed th i s pu bl i ca ti on from an au th ori zed d i s tri bu tor Atten ti on ! Veu i l l ez vou s ass u rer q u e vou s avez obten u cette pu bl i cati on vi a u n d i stri b u teu r ag ré é ® Registered trademark of the International Electrotechnical Commission –2– I EC 60793-2: 201 I EC 201 CONTENTS FOREWORD Scope Norm ative references Terms and definitions Quality assurance Construction of optical fibres Class A – Multimode fibres Class B – Single-m ode fibres Class C – Single-m ode fibres for intraconnection General requirem ents Coating I nterface with the coating 1 Colours of the coating 1 Annex A (normative) Existing m ultimode fibres Annex B (normative) Existing single-mode fibres B Existing single-m ode fibres B Existing fibres for intraconnection Bibliograph y Table Table Table Table Table Table Table Table – Sectional specifications – Main categories of multimode fibres – Sub-categories of multim ode fibres – Categories of glass core/glass clad single-mode fibres – Categories of glass core/glass clad single-mode fibres for intraconnection A – Existing multim ode fibres B – Existing single-m ode fibres B – Existing fibres for intraconnection I EC 60793-2: 201 I EC 201 –3– INTERNATI ONAL ELECTROTECHNI CAL COMMISSI ON O P T I C AL F I B RE S – P a rt : P ro d u c t s p e c i fi c a ti o n s – G e n e l FOREWORD ) The I nternati on al Electrotechni cal Comm ission (I EC) is a worl d wid e organization for stan dardization com prisin g all n ation al el ectrotechnical comm ittees (I EC National Comm ittees) The object of I EC is to prom ote internati onal co-operation on all q uestions concerni ng stand ardi zati on in the el ectrical an d electronic fi elds To this en d and in additi on to other acti vities, I EC pu blish es I nternational Stan dards, Techn ical Specificati ons, Technical Reports, Publicl y Avail abl e Specificati ons (PAS) an d Gu ides (h ereafter referred to as “I EC Publication(s)”) Th ei r preparation is entrusted to tech nical comm ittees; any I EC N ational Comm ittee interested in the subj ect dealt with m ay partici pate in this preparatory work I nternational, governm ental an d n on governm ental organ izations l iaising with th e I EC also participate i n this preparation I EC collaborates closel y with the I nternational Organi zation for Stand ardization (I SO) in accordance with ditions determ ined by agreem ent between th e two organi zati ons 2) The form al decisions or ag reem ents of I EC on tech nical m atters express, as n early as possible, an i nternati onal consensus of opi nion on the rel evant subjects since each technical com m ittee has representati on from all interested I EC N ational Com m ittees 3) I EC Publications have the form of recom m endations for intern ational use an d are accepted by I EC National Com m ittees in that sense While all reasonable efforts are m ade to ensure that th e tech nical content of I EC Publications is accu rate, I EC cann ot be h eld responsi ble for th e way in which th ey are used or for an y m isinterpretation by an y en d u ser 4) I n order to prom ote intern ational u niform ity, I EC National Com m ittees und ertake to apply I EC Publications transparentl y to the m axim um extent possible i n their national an d regi on al publicati ons Any d ivergence between an y I EC Publication and the correspondi ng national or regi on al publicati on sh all be clearl y in dicated in the latter 5) I EC itself d oes n ot provi de an y attestation of conform ity I n depend ent certificati on bodies provi de conform ity assessm ent services and, in som e areas, access to I EC m arks of conform ity I EC is not responsi ble for an y services carri ed out by ind ependent certification bodi es 6) All users shou ld ensure that th ey have the l atest editi on of thi s publicati on 7) No liability shall attach to I EC or its directors, em ployees, servants or ag ents inclu din g in divi du al experts an d m em bers of its tech nical com m ittees and I EC Nati on al Com m ittees for any person al i nju ry, property d am age or other dam age of any n ature whatsoever, wheth er di rect or indirect, or for costs (includ i ng leg al fees) and expenses arisi ng out of the publ ication, use of, or relian ce upon, this I EC Publicati on or any other I EC Publications 8) Attention is drawn to th e N orm ative references cited in th is publ ication Use of the referenced publ ications is indispensable for the correct applicati on of this publication 9) Attention is drawn to the possibility that som e of the elem ents of this I EC Publication m ay be the su bject of patent rig hts I EC shall not be held responsibl e for identifyi ng any or all such patent ri ghts I nternational Standard I EC 60793-2 has been prepared by subcomm ittee 86A: Fibres and cables, of I EC technical comm ittee 86: Fibre optics This eighth edition cancels and replaces the seventh edition published in 201 This edition constitutes a technical revision which was necessary due to the addition of new fibre m odels to the A1 category in I EC 60793-2-1 This edition includes the following significant technical changes with respect to the previous edition: a) addition of two new sub-categories A3f and A3g indicated “under consideration” as they have not yet been full y standardized at the m oment of finalizing this document; b) modification of the N umerical aperture heading in Table in line with recent m odifications in all A1 , A2, A3 and A4 m ultimode product specifications (N A ff onl y) This standard is to be read in conj unction with the I EC 60793-1 series –4– I EC 60793-2: 201 I EC 201 The text of this stand ard is based on the following documents: CDV Report on votin g 86A/1 645/CDV 86A/1 663/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table This publication has been drafted in accordance with the I SO/I EC Directives, Part A list of all parts in the I EC 60793 series, published under the general title be found on the I EC website Optical fibres , can The comm ittee has decided that the contents of this publication will remain unchanged until the stability date indicated on the I EC website under "http: //webstore iec.ch" in the data related to the specific publication At this date, the publication will be • • • • reconfirm ed, withdrawn, replaced by a revised edition, or amended I M P O R T AN T – T h e ' c o l o u r i n s i d e ' th at it tai n s u n d e rs t a n d i n g c o l o u r p ri n t e r of c o l o u rs i ts wh i c h c o n te n ts l ogo a re U s e rs on th e co ve r p ag e o f th i s c o n s i d e re d sh ou l d to t h e re fo re be p u b l i c a ti o n u s e fu l p ri n t th i s fo r i n d i c a te s th e d o cu m en t c o rre c t u sin g a I EC 60793-2: 201 I EC 201 –5– O P T I C AL F I B RE S – P a rt : P ro d u c t s p e c i fi c a ti o n s – G e n e l S cop e This part of I EC 60793 contains the general specifications for both m ultimode and singlemode optical fibres Sectional specifications for each of the four categories m ultim ode fibres: A1 , A2, A3, and A4 (part of the multim ode fibre class A) contain requirem ents specific to each category Sectional specifications for each of the two single-mode fibre classes, B and C, contain requirements comm on to each class Each sectional specification includes family specifications (in normative annexes) that contain requirements for the applicable category or sub-categories These sub-categories are distinguished on the basis of different fibre types or applications The requirements of this standard appl y to all classes Each sectional specification contains the requirem ents that are comm on to all the fam il y specifications that are within it These comm on requirem ents are copied to the famil y specification for ease of reference Tests or measurement m ethods are defined for each specified attribute Where possible, these definitions are by reference to an I EC standard – otherwise the test or m easurem ent method is outlined in the relevant sectional specification Table defines the sectional specifications The relevant famil y specifications are defined within the sectional specifications as normative annexes (see Tables to 5) Annexes A and B summ arize the existing fibre specifications Tabl e D ocu m en t I D – S e c ti o n a l F i b re c a t e g o r y / Cl ad d i n g cl as s m a t e ri a l I EC 60793-2-1 A1 m ultim ode I EC 60793-2-20 s p e c i fi c a t i o n s C o re m a t e ri a l I n d e x p ro fi l e Gl ass Glass Graded A2 m ultim ode Gl ass Glass Quasi-step or step I EC 60793-2-30 A3 m ultim ode Plastic Glass Step or graded (und er consideration) I EC 60793-2-40 A4 m ultim ode Plastic Plastic Step, m ulti-step or graded I EC 60793-2-50 B single-m ode Gl ass Glass Not applicable I EC 60793-2-60 C singl e-m ode Gl ass Glass Not applicable –6– I EC 60793-2: 201 I EC 201 N orm ati ve referen ces The following documents, in whole or in part, are norm ativel y referenced in this document and are indispensable for its application For dated references, onl y the edition cited applies For undated references, the latest edition of the referenced docum ent (including an y amendments) applies I EC 60304, Standard colours for insulation for low-frequency cables and wires I EC 60793-1 (all parts), Optical fibres − Part 1: Measurement methods and test procedures Optical fibres − Part 2-10: Product specifications – Sectional specification for category A1 multimode fibres I EC 60793-2-1 0, I EC 60793-2-20, Optical fibres − Part 2-20: Product specifications – Sectional specification for category A2 multimode fibres Optical fibres − Part 2-30: Product specifications – Sectional specification for category A3 multimode fibres I EC 60793-2-30, I EC 60793-2-40, Optical fibres − Part 2-40: Product specifications – Sectional specification for category A4 multimode fibres I EC 60793-2-50, Optical fibres − Part 2-50: Product specifications – Sectional specification for class B single-mode fibres I EC 60793-2-60, Optical fibres − Part 2-60: Product specifications – Sectional specification for category C single-mode intraconnection fibres Terms an d defi ni ti ons For the purposes of this document, the following term s and definitions apply mu lti m od e fi bre optical fibre in the core of which the radiation of two or m ore bound m odes can propagate at the wavelength of interest [SOU RCE: I EC 60050-731 : 991 , 731 -02-03] si n g l e-m od e fibre optical fibre in which the radiation of onl y one bound mode can propagate at the wavelength of interest [SOU RCE: I EC 60050-731 : 991 , 731 -02-02, m odified — N ote deleted] 3 core central region of an optical fibre through which most of the optical power is transmitted [SOU RCE: I EC 60050-731 : 991 , 731 -02-04] I EC 60793-2: 201 I EC 201 –7– 3.4 cladding dielectric material of an optical fibre surrounding the core [SOU RCE: I EC 60050-731 : 991 , 731 -02-05] 3.5 primary coating thin coating applied directl y to the cladding, usually at the tim e of the fibre drawing, in one or more layers, to preserve integrity of the cladding surface Note to entry: A second ary coating m ay be appl ied directly to th e prim ary coating, of one or m ore fi bres, to rei nforce the protection of th e optical fibre during handli ng an d cablin g [SOU RCE: I EC 60050-731 : 991 , 731 -02-57, m odified — the phrase "usuall y at the time more layers" and the note to entry have been added ] 3.6 fibre buffer material or assembl y of m aterials used to protect the optical fibre against ph ysical dam age [SOU RCE: I EC 60050-731 : 991 , 731 -02-56] 3.7 coloured coating and/or buffer thin coating and/or buffer applied on the prim ary coating and/or buffer or on the secondary coating in order to m ake each fibre distinguishable by its colour Quality assurance I t is the responsibility of the supplier to establish quality assurance by quality control procedures which ensures that the product m eets the requirem ents of this standard and the related sectional specifications and fam il y specifications I t is not intended that a com plete testing programme be carried out on every length of fibre When the customer wishes to specify acceptance tests or other quality procedures, it is essential that an agreement be reached between the supplier and the customer at the time of ordering Construction of optical fibres 5.1 Class A – Multimode fibres The m ain fibre categories are based on g, the refractive index profile parameter, see Table The norm alized index profile is expressed as: ( )=1 − x δx g (1 ) where ( ) = nn((0x)) −− nn((11 )) δx x a n(x) = r a (0 ≤ r ≤ a ) is the norm alized radial position; is the core radius; is the refractive index at normalized position x (2) (3) –8– I EC 60793-2: 201 I EC 201 Table – Main categories of multimode fibres Category M aterial Type Limits A1 Glass core/gl ass claddi ng Graded i nd ex fi bre ≤g