1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFibre optic connector opticalinterfaces Part 3-2: Optical interface, 2,5 mm and 1,25 mmdiameter cylindrical full zirconia ferrules for 8 degreesangled-PC single mode fibresBS EN
2、61755-3-2:2009National forewordThis British Standard is the UK implementation of EN 61755-3-2:2009. It wasderived by CENELEC from IEC 61755-3-2:2006, incorporating corrigendumJanuary 2009.The CENELEC common modifications have been implemented at the appro-priate places in the text and are indicated
3、by tags (e.g. ).The UK participation in its preparation was entrusted by Technical CommitteeGEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconnectingdevices and passive components.A list of organizations represented on this committee can be obtained onrequest to its secretary.This
4、publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010ISBN 978 0 580 53572 7ICS 33.180.20Compliance with a British Standard cannot confer immunity fromlegal obligations.Amendments/corrigenda issued since publicat
5、ionAmd. No. Date Text affectedBRITISH STANDARDBS EN 61755-3-2:2009The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by IEC corrigendum January 2009 isindicated in the text by .This British Standard was published under the authority of th
6、e Standards Policy and Strategy Committee on 31 March 2010EUROPEAN STANDARD EN 61755-3-2 NORME EUROPENNE EUROPISCHE NORM February 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Cent
7、ral 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 61755-3-2:2009 E ICS 33.180.20 English version Fibre optic connector optical interfaces - Part 3-2: Optical interface, 2,5 m
8、m and 1,25 mm diameter cylindrical full zirconia ferrules for 8 degrees angled-PC single mode fibres (IEC 61755-3-2:2006, modified + corrigendum 2009) Interfaces optiques de connecteurs pour fibres optiques - Partie 3-2: Interfaces optiques, frules PC en zircone plein cylindrique de diamtre 2,5 mm e
9、t 1,25 mm, pour fibres unimodales angle PC de 8 degrs (CEI 61755-3-2:2006, modifie + corrigendum 2009) Optische Schnittstellen fr Lichtwellenleiter-Steckverbinder - Teil 3-2:Optische Schnittstellen mit 8 abgeschrgten Zirkonium-Ferrulen mit 2,5 mm und 1,25 mm Durchmesser fr Einmodenfasern mit physika
10、lischem Kontakt (IEC 61755-3-2:2006, modifiziert + Corrigendum 2009) This European Standard was approved by CENELEC on 2008-12-01. 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 s
11、tandard 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
12、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 Re
13、public, 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. EN 61755-3-2:2009 - 2 - Foreword The text of
14、the International Standard IEC 61755-3-2:2006, prepared by SC 86B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, together with the common modifications prepared by the Technical Committee CENELEC TC 86BXA, Fibre optic interconnect, passive and connectorised
15、components, was submitted to the formal vote and was approved by CENELEC as EN 61755-3-2 on 2008-12-01. 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
16、by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-12-01 _ Endorsement notice The text of the International Standard IEC 61755-3-2:2006 + corrigendum January 2009 was approved by CENELEC as a European Standard with agreed common modifications. BS EN 61755-3-2:200
17、9 7 FIBRE OPTIC CONNECTOR OPTICAL INTERFACES Part 3-2: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical full zirconia ferrules for 8 degrees angled-PC single mode fibres 1 Scope This part of IEC 61755 defines certain dimensional limits of a 2,5 mm and a 1,25mm diameter cylindrical zirconia
18、 (ZrO2) 8 degrees angled-PC (APC) ferrule optical interface to meet specific requirements for connecting fibre to fibre interconnection. Ferrules made from the material specified in this document are suitable for use in categories C, U, E and O as defined in IEC 61753-1. 2 Description The performanc
19、e of an angled-PC polished 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
20、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 relativ
21、e to fibre hole clearance; alignment sleeve inside diameter; fibre core concentricity relative to the cladding diameter; fibre core orientation relative to keying; ferrule grasping force of the alignment sleeve; the amount of angled PC polishing after tuning of the connector at PC condition. Paramet
22、ers influencing the axial alignment of the optical fibre axes include the following: end-face spherical radius; end-face spherical radius apex offset of ferrule or angle relative to angle-PC reference plane; fibre undercut; ferrule rotational clearance relative to the keying; axial force on ferrule
23、end-face; ferrule and fibre material physical constants; alignment sleeve frictional force; keying accuracy. BS EN 61755-3-2:2009EN 61755-3-2:2009 9 3 Interface parameters The optical interface dimensions are shown in Figure 1, the ferrule dimensions in Figure 3, while Figure 2 underlines fibre core
24、 location. The parameter values are detailed in Tables 1, 2 and 3. I E C B A Fibre axisFerrule axis Angled-PC reference plane IEC 1319/06 Figure 1 Interface dimensions BS EN 61755-3-2:2009EN 61755-3-2:2009 11 Key Key F F H G IEC 1315/06 IEC 1314/06 a) Grades B and C b) Grade D F, G and H define the
25、radial and angular polar coordinate limits of the optical fibre core relative to the optical datum of the ferrule. Figure 2 Fibre core location BS EN 61755-3-2:2009EN 61755-3-2:2009 13 Table 1 Optical interface parameter values for 2,5 mm diameter ferrule Parameter values Grade A Grade B Grade C Gra
26、de D Ref. Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum Remarks A b-100 a-100 a-100 anm B 5 12 5 12 5 12 Radius, mm C 0 50 0 50 0 50 m D 2,4985 2,4995 2,4985 2,4995 2,4985 2,4995 Diameter, mm E 0 0,2 0 0,3 0 0,6 Degrees F 0 0,0010 0 0,0014 0 0,0015 Radius, mm G 0 0,0003 0 0,0003 N/
27、A N/A Radius, mm H 0 50 0 50 N/A N/A Degrees I 8 8 8 DegreesNOTE 1 The core location and tilt angle values specified in this document have been calculated to ensure that the attenuation values specified in 61755-2-2 are met under all circumstances. NOTE 2 Dome offset is measured in both extreme posi
28、tions of the ferrule when the ferrule is rotated in the connector.aContact force 4,9 N minimum. Ferrule material: 3mol% yttria stabilised zirconia, ZrO2. Nominal material physical constant values: Youngs Modulus, E = 200 20 GPa, Poissons Ratio, = 0,30 - 0,31. AMaximum1988 B0.795() B 106 B2106 C2()10
29、3+ 60bA negative value indicates fibre protrusion. BS EN 61755-3-2:2009 EN 61755-3-2:2009 15 Table 2 Optical interface parameter values for 1,25 mm diameter ferrule Parameter values Grade A Grade B Grade C Grade D Ref. Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum Remarks Ab-100 a-
30、100 a-100 anm B 5 12 5 12 5 12 Radius, mm C 0 50 0 50 0 50 m D 1,2485 1,2495 1,2485 1,2495 1,2485 1,2495 Diameter, mm E 0 0,2 0 0,3 0 0,6 Degrees F 0 0,0010 0 0,0014 0 0,0015 Radius, mm G 0 0,0003 0 0,0003 N/A N/A Radius, mm H 0 50 0 50 N/A N/A Degrees I 8 8 8 DegreesNOTE 1 Contact force 2,9 N minim
31、um. Ferrule material: 3mol% yttria stabilised zirconia, ZrO2. Nominal material physical constant values: Youngs Modulus, E = 200 20 GPa, Poissons Ratio, = 0,30 - 0,31. AMaximum1798 B0.795() B 106 B2106 C2()103+ 60NOTE 2 Dome offset is measured in both extreme positions of the ferrule when the ferrul
32、e is rotated in the connector. aThe core location and tilt angle values specified in this document have been calculated to ensure that the attenuation values specified in 61755-2-2 are met under all circumstances. bA negative value indicates fibre protrusion. BS EN 61755-3-2:2009 EN 61755-3-2:2009 1
33、7 J K No sharp edge IEC 1320/06 NOTE Typically two types, stepped and conical, are possible foe APC ferrule tip shape. This figure illustrates the conical type. Figure 3 Ferrule dimensions Table 3 Optical interface parameter values for APC ferrules Ref. 2,5 mm diameter ferrule parameter values 1,25
34、mm diameter ferrule parameter values Notes Minimum Maximum Minimum Maximum J 0,8 1,7 0,6 0,85 Diameter, mmK N/A 1,8 N/A 1,0 mmN/A = Not applicable BS EN 61755-3-2:2009EN 61755-3-2:2009 19 Annex A (informative) The maximum allowed spherical fibre undercut AMaximumis determined by the interaction of t
35、he parameters influencing the longitudinal offset of the optical fibre axes as defined by 1. 1where AMaximumis 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 contact force and mat
36、erial properties B is the end face spherical radius (mm) C is the apex offset from fibre axis (m) DDTEis the differential thermal expansion between the ferrule material and the silica fibre at maximum operating temperature (nm) DPFWis the permanent fibre withdrawal that exceeds the transient fibre m
37、ovement predicted by the first three terms in 1 (nm) End face deformation term as a function of contact force, end face radius and material properties. 2 Geometric compensation term for the offset of the ferrule apex from the fibre axis. 3 k1Bk2B106 B2106 C2()103+A Maximum k 1 B k 2 B106 B2106 C2( )
38、103+ DDTE DPFw BS EN 61755-3-2:2009EN 61755-3-2:2009 21 BS EN 61755-3-2:2009010203040506070 5 1015 20 25 30 1000100200300400500Allowable undercut(nm)Apex offset (m)Radius (mm)IEC 2332/08 A maximum 1 988 B 0 795,( ) B 106 B2106 C2( )103 + 60 = Figure A.1 Allowable undercut as a function of end face r
39、adius and apex offset 4,9 N minimum contact force 010203040506070510 15 20 25 30 1000100200300400500 Allowable undercut(nm)Apex offset (m)Radius (mm) IEC 2333/08 A maximum 1 798 B 0 795, B 106 B2106 C2( ) 103 + 60 = Figure A.2 Allowable undercut as a function of end face radius and apex offset 2,9 N
40、 minimum contact force EN 61755-3-2:2009 23 Bibliography IEC 61753-1, Fibre optic interconnecting devices and passive components Part 1: General and guidance for performance standards 1IEC 61755-2-2, Fibre optic connector optical interfaces Part 2-2: Optical interface standard single mode non-angled
41、 physically contacting fibres _ 1 To be published. BS EN 61755-3-2:2009_ NOTE Harmonized as EN 61753-1:2007 (not modified). NOTE Harmonized as EN 61755-2-2:2006 (not modified). EN 61755-3-2:2009This page deliberately left blankThis page deliberately left blankBSI is the independent national body res
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