www bzfxw com Fibre optic interconnecting devices and passive components — Fibre optic connector optical interfaces — Part 3 8 Optical interface, 2,5 mm and 1,25 mm diameter cylindrical 8 degrees angl[.]
BS EN 61755-3-8:2009 BSI British Standards Fibre optic interconnecting devices and passive components — Fibre optic connector optical interfaces — Part 3-8: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical degrees angled-APC 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 61755-3-8:2009 National foreword This British Standard is the UK implementation of EN 61755-3-8:2009 It is identical to IEC 61755-3-8:2009 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 59158 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 31 March 2009 Amendments issued since publication Amd No Date Text affected EUROPEAN STANDARD EN 61755-3-8 NORME EUROPÉENNE February 2009 EUROPÄISCHE NORM ICS 33.180.20 English version Fibre optic interconnecting devices and passive components Fibre optic connector optical interfaces Part 3-8: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical degrees angled-APC composite ferrule using titanium as fibre surrounding material, single mode fibre (IEC 61755-3-8:2009) Dispositifs d'interconnexion et composants passifs fibres optiques Interfaces optiques de connecteurs pour fibres optiques Partie 3-8: Interfaces optiques, férules composites cylindriques APC-angle de degrés, de diamètre 2,5 mm et 1,25 mm, utilisant le titane comme matériau entourant la fibre, fibres unimodales (CEI 61755-3-8:2009) Lichtwellenleiter Verbindungselemente und passive Bauteile Optische Schnittstellen von Lichtwellenleiter-Steckverbindern Teil 3-8: Optische Schnittstelle Zylindrische Grad abgeschrägte APC-Composite-Ferrulen mit 2,5 mm und 1,25 mm Durchmesser für Einmodenfaser, mit Titan als Material für die Faserfassung, Einmoden LWL (IEC 61755-3-8:2009) This European Standard was approved by CENELEC on 2009-02-01 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 61755-3-8:2009 E BS EN 61755-3-8:2009 EN 61755-3-8:2009 -2- Foreword The text of document 86B/2769/FDIS, future edition of IEC 61755-3-8, 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 61755-3-8 on 2009-02-01 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) 2009-11-01 – latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-02-01 Endorsement notice The text of the International Standard IEC 61755-3-8:2009 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 (partially modified) BS EN 61755-3-8:2009 –2– 61755-3-8 © IEC:2009 CONTENTS Scope .5 Description .5 Interface parameters for APC ferrule independent from the ferrule material Annex A (informative) .9 Bibliography 10 Figure – Interface dimensions for APC ferrule Figure – Fibre core location Figure – Interface dimension of the end face contact zone Table – Optical interface parameter values for 2,5 mm diameter APC ferrule .7 Table – Optical interface parameter values for 1,25 mm diameter APC ferrule ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ BS EN 61755-3-8:2009 61755-3-8 © IEC:2009 –5– FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS – FIBRE OPTIC CONNECTOR OPTICAL INTERFACES – Part 3-8: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical degrees angled-APC 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 APC 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 APC 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 ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 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; • keying accuracy BS EN 61755-3-8:2009 61755-3-8 © IEC:2009 –6– Interface parameters for APC ferrule independent from the ferrule material D J No sharp edge K Ferrule axis Fibre axis IEC 2348/08 Figure – I nterface dimensions for APC ferrule ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 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 61755-3-8:2009 61755-3-8 © IEC:2009 –7– 8° E Fibre axis C Ferrule axis A B Angled-PC reference plane IEC 2349/08 Figure – Interface dimension of the end face contact zone Table – Optical interface parameter values for 2,5 mm diameter APC ferrule Ref Parameter values Grade A Grade B ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 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 b nm a 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 ⎞⎟ × 10 − 80 ⎝ ⎠ b A negative value indicates fibre protrusion BS EN 61755-3-8:2009 61755-3-8 © IEC:2009 –8– Table – Optical interface parameter values for 1,25 mm diameter APC 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 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 b nm a 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 A negative value indicates fibre protrusion ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ BS EN 61755-3-8:2009 61755-3-8 © 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 ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 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 61755-3-8:2009 – 10 – 61755-3-8 © 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 _ ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ This page deliberately left blank