【BS英国标准】BS EN 61755-3-8-2009 Fibre optic interconnecting devices and passive components — Fibre optic connector optical interfaces — Part 3-8.doc

bs en 61755-3-8:2009bsi british standardsfibre optic interconnectingdevices and passive components fibre optic connector optical interfaces part 3-8: optical interface, 2,5 mm and 1,25 mm diameter cylindrical 8 degrees angled-apc composite ferrule using titanium as fibre surrounding material, single mode fibreno copying without bsi permission except as permitted by copyright lawraising standards worldwidebs en 61755-3-8:2009british standardnational forewordthis 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 2009isbn 978 0 580 59158 7ics 33.180.20compliance with a british standard cannot confer immunity from legal obligations.this british standard was published under the authority of the standardspolicy and strategy committee on 31 march 2009.amendments issued since publicationamd. no.date text affectedeuropean standarden 61755-3-8norme europenneeuropische norm february 2009 ics 33.180.20english versionfibre 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 angled-apc composite ferruleusing titanium as fibre surrounding material, single mode fibre(iec 61755-3-8:2009)dispositifs dinterconnexionet composants passifs fibres optiques - interfaces optiques de connecteurspour fibres optiques -partie 3-8: interfaces optiques, frules composites cylindriquesapc-angle de 8 degrs,de diamtre 2,5 mm et 1,25 mm, utilisant le titane comme matriauentourant la fibre, fibres unimodales(cei 61755-3-8:2009)lichtwellenleiter - verbindungselemente und passive bauteile - optische schnittstellenvon lichtwellenleiter-steckverbindern - teil 3-8: optische schnittstelle -zylindrische 8 grad abgeschrgteapc-composite-ferrulen mit 2,5 mm und 1,25 mm durchmesserfr einmodenfaser, mit titan als materialfr 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.ceneleceuropean committee for electrotechnical standardization comit europen de normalisation electrotechnique europisches komitee fr elektrotechnische normungcentral 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 ebs en 61755-3-8:200961755-3-8 iec:2009 2 en 61755-3-8:2009- 2 -forewordthe text of document 86b/2769/fdis, future edition 1 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 identicalnational standard or by endorsement(dop)2009-11-01 latest date by which the national standards conflictingwith the en have to be withdrawn(dow)2012-02-01endorsement noticethe text of the international standard iec 61755-3-8:2009 was approved by cenelec as a europeanstandard without any modification.in the official version, for bibliography, the following notes have to be added for the standards indicated:iec 61753-1note harmonized as en 61753-1:2007 (not modified).iec 61755-3note harmonized in en 61755-3 series (partially modified).contents1scope . 52description . 53interface parameters for apc ferrule independent from the ferrule material . 6annex a (informative) . 9bibliography. 10figure 1 interface dimensions for apc ferrule . 6figure 2 fibre core location . 6figure 3 interface dimension of the end face contact zone . 7table 1 optical interface parameter values for 2,5 mm diameter apc ferrule . 7table 2 optical interface parameter values for 1,25 mm diameter apc ferrule . 8bs en 61755-3-8:200961755-3-8 iec:2009 9 fibre optic interconnectingdevices and passive components fibre optic connector optical interfaces part 3-8: optical interface, 2,5 mm and 1,25 mm diameter cylindrical8 degrees angled-apc composite ferrule using titanium as fibre surrounding material, single mode fibre1scopethis part of iec 61755 defines dimensional limits and material properties of a 2,5 mm and a1,25 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 (zro2) for the ferrule to sleeve contact zone and titanium for the end facecontact zone. ferrules made from the material specified in this standard are suitable for usein categories c, u, e and o as defined in iec 61753-1.noteif 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 61775-3.2descriptionthe 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.3interface parameters for apc ferrule independent from the ferrule materialdjno sharp edgekfibre axisferrule axisiec 2348/08figure 1 interface dimensions for apc ferrulefiec 1315/06figure 2 fibre core locationf defines the radial coordinate limits of the optical fibre core relative to the optical datum of the ferrule.8efibre axiscferrule axisabangled-pcreference planeiec 2349/08figure 3 interface dimension of the end face contact zonetable 1 optical interface parameter values for 2,5 mm diameter apc ferruleref.parameter valuesremarksgrade agrade bgrade cgrade dminimummaximumminimummaximumminimummaximumminimummaximuma200a200a200ab nmb720720720radius, mmc070070070md2,49852,49952,49852,49952,49852,4995diameter, mme00,600,800,6degreesf00,0001500,000300,0016radius, mmj0,8-0,8-0,8-diameter, mmk-1,8-1,8-1,8mma contact force 4,9 n minimum. ferrule material: titanium. nominal material physical constant values: youngsmodulus, e = 105 gpa, poissons ratio, = 0,34. maximum = 2115 b (0,765 ) b 10 6 + b 2 10 6 c 2 10 3 80b a negative value indicates fibre protrusion.table 2 optical interface parameter values for 1,25 mm diameter apc ferruleref.parameter valuesremarksgrade agrade bgrade cgrade dminimummaximumminimummaximumminimummaximumminimummaximuma200a200a200ab nmb720720720radius, mmc070070070md1,24851,24951,24851,24951,24851,2495diameter, mme00,600,800,6degreesf00,0001500,000300,0016radius, mmj0,6-0,6-0,6-diameter, mmk-1,0-1,0-1,0mmacontact force 2,9 n minimum. ferrule material: titanium. nominal material physical constant values: youngsmodulus, e = 105 gpa, poissons ratio, = 0,34. maximum = 1880 b (0,765 ) b 10 6 + b 2 10 6 c 2 10 3 80ba negative value indicates fibre protrusion.annex a+(informative)maximum allowed spherical fibre undercutthe maximum allowed spherical fibre undercut amaximum is determined by the interaction of the parameters influencing the longitudinal offset of the optical fibre axes as defined by a.1.a maximum = k1 bk2 b 10 6b 2 10 623 c 10 ddte dpfwa.1whereamaximumis the maximum spherical undercut for physical contact (nm);k1is the coefficient based on ferrule contact force and material properties;k2is the exponent based on ferrule co