M \2009 03 04\~$blank pdf raising standards worldwide™ NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI British Standards WB9423 BSI StandardColCov noK AW BSI FRONT COVERS 5/[.]
BS EN 61755-3-7:2009 BSI British Standards Fibre optic interconnecting devices and passive components — Fibre optic connector optical interfaces — Part 3-7: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical PC composite ferrule using titanium as fibre surrounding material, single mode fibre NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW raising standards worldwide™ BRITISH STANDARD BS EN 61755-3-7:2009 National foreword This British Standard is the UK implementation of EN 61755-3-7:2009 It is identical to IEC 61755-3-7:2009 The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconnecting devices and passive components A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © BSI 2009 ISBN 978 580 59157 ICS 33.180.20 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2009 Amendments issued since publication Amd No Date Text affected BS EN 61755-3-7:2009 EUROPEAN STANDARD EN 61755-3-7 NORME EUROPÉENNE April 2009 EUROPÄISCHE NORM ICS 33.180.20 English version Fibre optic interconnecting devices and passive components Fibre optic connector optical interfaces Part 3-7: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical PC composite ferrule using titanium as fibre surrounding material, single mode fibre (IEC 61755-3-7:2009) Dispositifs d'interconnexion et composants passifs fibres optiques Interfaces optiques de connecteurs pour fibres optiques Partie 3-7: Interfaces optiques, férules composites cylindriques PC, de diamètre 2,5 mm et 1,25 mm, utilisant le titane comme matériau entourant la fibre, fibres unimodales (CEI 61755-3-7:2009) Lichtwellenleiter Verbindungselemente und passive Bauteile Optische Schnittstellen von Lichtwellenleiter-Steckverbindern Teil 3-7: Optische Schnittstelle Zylindrische PC-Composite-Ferrulen mit 2,5 mm und 1,25 mm Durchmesser für Einmodenfaser, mit Titan als Material für die Faserfassung, Einmoden LWL (IEC 61755-3-7:2009) This European Standard was approved by CENELEC on 2009-03-01 CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: avenue Marnix 17, B - 1000 Brussels © 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 61755-3-7:2009 E BS EN 61755-3-7:2009 EN 61755-3-7:2009 –2– Foreword The text of document 86B/2768/FDIS, future edition of IEC 61755-3-7, prepared by SC 86B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61755-3-7 on 2009-03-01 The following dates were fixed: – latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-12-01 – latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-03-01 Endorsement notice The text of the International Standard IEC 61755-3-7:2009 was approved by CENELEC as a European Standard without any modification In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61753-1 NOTE Harmonized as EN 61753-1:2007 (not modified) IEC 61755-3 NOTE Harmonized in EN 61755-3 series (modified) BS EN 61755-3-7:2009 –2– 61755-3-7 © IEC:2009 CONTENTS Scope .5 Description .5 Interface parameters for PC ferrule independent from the ferrule material Annex A (informative) .9 Bibliography 10 Figure – Interface dimensions for PC ferrule Figure – Fibre core location Figure – Interface dimension of the end-face contact zone Table – Optical interface parameter values for 2,5 mm diameter PC ferrule Table – Optical interface parameter values for 1,25 mm diameter PC ferrule BS EN 61755-3-7:2009 61755-3-7 © IEC:2009 –5– FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS – FIBRE OPTIC CONNECTOR OPTICAL INTERFACES – Part 3-7: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical PC composite ferrule using titanium as fibre surrounding material, single mode fibre Scope This part of IEC 61755 defines dimensional limits and material properties of a 2,5 mm and a 1,25 mm diameter cylindrical composite ferrule optical interface to meet specific requirements for PC fibre-to-fibre interconnection The composite ferrule uses different materials in the end face contact zone and in ferrule to sleeve contact zone The specified materials for each zone are zirconia (ZrO ) for the ferrule to sleeve contact zone and titanium for the end face contact zone Ferrules made from the material specified in this standard are suitable for use in categories C, U, E and O as defined in IEC 61753-1 NOTE If mated within the same family (cylindrical PC ferrule), the ferrules specified in this standard are intended to have the same optical attenuation performance grade for connections with all ferrules described in different parts of IEC 61775-3 Description The performance of a cylindrical ferrule optical interface is determined by the accuracy with which the optical datum targets of two mating ferrules are aligned with each other There are three conditions affecting the alignment of two optical datum targets, lateral offset, angular offset and longitudinal offset Parameters influencing the lateral and angular offset of the optical fibre axes include the following: • ferrule outside diameter; • fibre hole concentricity relative to the ferrule outside diameter; • fibre hole angle relative to outside diameter axis; • fibre cladding diameter to fibre hole clearance; • alignment sleeve inside diameter; • fibre core concentricity relative to the cladding diameter; • fibre core orientation relative to keying feature Parameters influencing the longitudinal offset of the optical fibre axes include the following: • end face spherical radius; • end face spherical radius apex offset; • fibre undercut; • axial force on ferrule end face; • ferrule and fibre material physical constants; • alignment sleeve frictional force BS EN 61755-3-7:2009 61755-3-7 © IEC:2009 –6– Interface parameters for PC ferrule independent from the ferrule material D J No sharp edge K E Ferrule axis Fibre axis IEC 2295/08 Figure – I nterface dimensions for PC ferrule F IEC 1315/06 Figure – Fibre core location F defines the radial coordinate limits of the optical fibre core relative to the optical datum of the ferrule BS EN 61755-3-7:2009 61755-3-7 © IEC:2009 –7– C B A IEC 2113/06 Figure – Interface dimension of the end-face contact zone Table – Optical interface parameter values for 2,5 mm diameter PC ferrule Ref Parameter values Grade A Grade B Grade C Grade D Remarks Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum A –200 a –200 a –200 a B 20 20 20 Radius, mm C 70 70 70 μm D 2,4985 2,4995 2,4985 2,4995 2,4985 2,4995 Diameter, mm E 0,6 0,8 0,6 Degrees F 0,00015 0,0003 0,0016 Radius, mm J 0,8 - 0,8 - 0,8 - Diameter, mm K - 1,8 - 1,8 - 1,8 mm a b, nm Contact force 4,9 N minimum Ferrule material: titanium Nominal material physical constant values: Young’s Modulus, E = 105 GPa, Poisson’s Ratio, ν = 0,34 Α Maximum = 2115 × B (−0,765 ) − B × 10 + ⎛⎜ B × 10 − C ⎝ b A negative value indicates fibre protrusion ⎞ × 10 − 80 ⎟ ⎠ BS EN 61755-3-7:2009 61755-3-7 © IEC:2009 –8– Table – Optical interface parameter values for 1,25 mm diameter PC ferrule Ref Parameter Values Grade A Grade B Grade C Grade D Minimum Maximum Minimum Maximum Minimum Maximum a Remarks Minimum Maximum A -200 a -200 a -200 a B 20 20 20 Radius, mm C 70 70 70 μm D 1,2485 1,2495 1,2485 1,2495 1,2485 1,2495 Diameter, mm E 0,6 0,8 0,6 Degrees F 0,00015 0,0003 0,0016 Radius, mm J 0,6 - 0,6 - 0,6 - Diameter, mm K - 1,0 - 1,0 - 1,0 mm Contact force 2,9 N minimum Ferrule material: titanium Nominal material physical constant values: Young’s Modulus, E = 105 GPa, Poisson’s Ratio, ν = 0,34 Α Maximum = 1880 × B (−0,765 ) − B × 10 + ⎛⎜ B × 10 − C ⎞⎟ × 10 − 80 ⎝ ⎠ b b, A negative value indicates fibre protrusion nm BS EN 61755-3-7:2009 61755-3-7 © IEC:2009 –9– Annex A (informative) Maximum allowed spherical fibre undercut The maximum allowed spherical fibre undercut A Maximum is determined by the interaction of the parameters influencing the longitudinal offset of the optical fibre axes as defined by [A.1] A Maximum = k 1× B k − B× 10 + ⎛⎜ B × 10 − C ⎞⎟ × 10 − DDTE − DPFW ⎝ ⎠ [A.1] where A Maximum is the maximum spherical undercut for physical contact (nm); k1 is the coefficient based on ferrule contact force and material properties; k2 is the exponent based on ferrule contact force and material properties; B is the end face spherical radius (mm); C is the apex offset from fibre axis (μm); D DTE is the differential thermal expansion between the ferrule material and the silica fibre at maximum operating temperature (nm) D DTE between the Ti-composite ferrule material and the silica fibre at maximum operating temperature is 50 nm; D PFW is the permanent fibre withdrawal that exceeds the transient fibre movement predicted by the first three terms in [A.1] (nm) D PFW for the Ti-composite ferrule is 30 nm End face deformation term as a function of contact force, end face radius and material properties k 1× B k [A.2] Geometric compensation term for the offset of the ferrule apex from the fibre axis B × 10 + ⎛⎜ B × 10 − C ⎞⎟ × 10 ⎝ ⎠ [A.3] BS EN 61755-3-7:2009 – 10 – 61755-3-7 © IEC:2009 Bibliography IEC 61753-1, Fibre optic interconnecting devices and passive components performance standard – Part 1: General and guidance for performance standards IEC 61755-3 (all parts), Fibre optic connector optical interfaces – Part 3: Optical interface _ This page deliberately left blank This page deliberately left blank WB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page British Standards Institution (BSI) BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions Information on standards British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: +44 (0)20 8996 9000 Fax: +44 (0)20 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards BSI provides a wide range of information on national, European and international standards through its Library Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: info@bsigroup.com Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: membership@bsigroup.com Information regarding online access to British Standards via British Standards Online can be found at www.bsigroup.com/BSOL Further information about BSI is available on the BSI website at www.bsigroup.com Buying standards Orders for all BSI, international and foreign standards publications should be addressed to BSI Customer Services Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001 Email: orders@bsigroup.com You may also buy directly using a debit/credit card from the BSI Shop on the website www.bsigroup.com/shop In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained Details and advice can be obtained from the Copyright & Licensing Manager Tel: +44 (0)20 8996 7070 Email: copyright@bsigroup.com BSI Group Headquarters 389 Chiswick High Road London W4 4AL UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 www.bsigroup.com/standards raising standards worldwide™