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    EN 61755-2-5-2015 en Fibre optic interconnecting devices and passive components - Connector optical interfaces - Part 2-5 Connection parameters of non-dispersion shifted single-mod.pdf

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    EN 61755-2-5-2015 en Fibre optic interconnecting devices and passive components - Connector optical interfaces - Part 2-5 Connection parameters of non-dispersion shifted single-mod.pdf

    1、BSI Standards PublicationFibre optic interconnecting devices and passive components Connector optical interfacesPart 2-5: Connection parameters of non-dispersion shifted single-mode physically contacting fibres Angled for reference connection applicationsBS EN 61755-2-5:2015National forewordThis Bri

    2、tish Standard is the UK implementation of EN 61755-2-5:2015. It isidentical to IEC 61755-2-5:2015.The UK participation in its preparation was entrusted by TechnicalCommittee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre opticinterconnecting devices and passive components.A list of organizati

    3、ons represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 9

    4、78 0 580 73815 9ICS 33.180.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2015.Amendments/corrigenda issued since publicationDate Text affectedBRITISH

    5、STANDARDBS EN 61755-2-5:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61755-2-5 February 2015 ICS 33.180.20 English Version Fibre optic interconnecting devices and passive components - Connector optical interfaces - Part 2-5: Connection parameters of non-dispersion shifted single-mode phy

    6、sically contacting fibres - Angled for reference connection applications (IEC 61755-2-5:2015) Dispositifs dinterconnexion et composants passifs fibres optiques - Interfaces optiques de connecteurs pour fibres optiques - Partie 2-5: Connexion de fibres unimodales dispersion non dcale en contact physi

    7、que avec angle, avec polissage, pour applications en tant que connecteurs de rfrence (IEC 61755-2-5:2015) Lichtwellenleiter - Verbindungselemente und passive Bauteile -Optische Schnittstellen von Lichtwellenleiter-Steckverbindern - Teil 2-4: Optische Schnittstelle von nicht-dispersionsverschobenen,

    8、abgeschrgten Einmodenfasern mit physikalischem Kontakt fr die Anwendung mit Referenzsteckverbindern (IEC 61755-2-5:2015) This European Standard was approved by CENELEC on 2015-02-12. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givi

    9、ng 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 CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three

    10、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 CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electro

    11、technical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Roman

    12、ia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

    13、 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 61755-2-5:2015 E BS EN 61755-2-5:2015EN 61755-2-5:2015 - 2 - Foreword The text of document 86B/3846/FDIS, future edition 1 of IEC 61755-2-5, prepared by SC 86B “Fibre optic inter

    14、connecting devices and passive components“ of IEC/TC 86 “Fibre optics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61755-2-5:2015. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical

    15、national standard or by endorsement (dop) 2015-11-12 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-02-12 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CE

    16、N shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61755-2-5:2015 was approved by CENELEC as a European Standard without any modification. BS EN 61755-2-5:2015- 3 - EN 61755-2-5:2015 Annex ZA (normative) Normat

    17、ive references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated reference

    18、s, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards list

    19、ed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 60793-2-50 - Optical fibres - Part 2-50: Product specifications - Sectional specification for class B single-mode fibres EN 60793-2-50 - IEC 61300-3-4 - Fibre optic interconnecting devices and passive component

    20、s - Basic test and measurement procedures - Part 3-4: Examinations and measurements - Attenuation EN 61300-3-4 - IEC 61300-3-42 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-42: Examinations and measurements - Attenuation of single mode

    21、 alignment sleeves and or adaptors with resilient alignment sleeves EN 61300-3-42 - IEC 61755-2-1 - Fibre optic connector optical interfaces - Part 2-1: Optical interface standard single mode non-angled physically contacting fibres EN 61755-2-1 - IEC 61755-2-2 - Fibre optic connector optical interfa

    22、ces - Part 2-2: Optical interface standard single mode 8 degrees angled physically contacting fibres EN 61755-2-2 - IEC 61755-3 (mod) series Fibre optic connector optical interfaces EN 61755-3 series IEC/TR 62627-04 - Fibre optic interconnecting devices and passive components - Part 04: Example of u

    23、ncertainty calculation: Measurement of the attenuation of an optical connector - - BS EN 61755-2-5:2015 2 IEC 61755-2-5:2015 IEC 2015 CONTENTS 1 Scope 5 2 Normative references 5 3 Performance grades 6 4 Description 6 5 Criteria for a fit within performance grades 7 5.1 General . 7 5.2 Attenuation gr

    24、ades and criteria . 7 6 Use of selected fibre to assemble reference connector plugs . 9 7 Reference adaptor . 9 8 Attenuation measurement uncertainty contribution . 9 Annex A (informative) Example of determination of the attenuation measurement uncertainty 10 Figure 1 Representation of fibre core po

    25、sition of single connector plug under the assumption of worst case alignment with identical connector plug. 8 Figure A.1 Attenuation measurement uncertainty contribution for Grade 1 reference connectors 10 Table 1 Single-mode attenuation grades at 1 310 nm (dB) . 6 Table 2 Mode field diameter and fi

    26、bre core nominal index of refraction for fibre to be used in reference connector plugs 7 Table 3 Measurement uncertainty contribution of reference connectors . 9 BS EN 61755-2-5:2015IEC 61755-2-5:2015 IEC 2015 5 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS CONNECTOR OPTICAL INTERFACES

    27、Part 2-5: Connection parameters of non-dispersion shifted single-mode physically contacting fibres Angled for reference connection applications 1 Scope This part of IEC 61755 defines a set of prescribed conditions that should be maintained in order to satisfy the requirements of angled polished refe

    28、rence connections. The prescribed conditions include dimensional limits and optical fibre requirements of the optical interface to meet specific requirements for reference connection (plugs and adaptors) used for attenuation measurements. Two different grades for reference connections are defined in

    29、 this standard. The use of each of these grades depends on the application and on the targeted attenuation measurement uncertainty. The model uses a Gaussian distribution of light intensity over the specified restricted mode field diameter (MFD) range. This standard is intended to be used for shippi

    30、ng and acceptance inspections. The reference connector plug is specified for B1.1, B1.3 and B6 fibres as specified in IEC 60793-2-50. The use of the reference connector plug would not be recommended where classification of fibre is difficult, for example construction and maintenance of cable plant.

    31、2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amend

    32、ments) applies. IEC 60793-2-50, Optical fibres Part 2-50: Product specifications Sectional specification for class B single-mode fibres IEC 61300-3-4, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-4: Examinations and measurements Attenuation

    33、IEC 61300-3-42, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-42: Examinations and measurements Attenuation of single mode alignment sleeves and or adaptors with resilient alignment sleeves IEC 61755-2-1, Fibre optic interconnecting devices a

    34、nd passive components Connector optical interfaces Part 2-1: Connection parameters of non-dispersion shifted single-mode physically contacting fibres Non-angled BS EN 61755-2-5:2015 6 IEC 61755-2-5:2015 IEC 2015 IEC 61755-2-2, Fibre optic interconnecting devices and passive components Connector opti

    35、cal interfaces Part 2-2: Connection parameters of non-dispersion shifted single-mode physically contacting fibres Angled IEC 61755-3 (all parts), Fibre optic interconnecting devices and passive components Connector optical interfaces Part 3-x: Connector parameters of non-dispersion shifted single-mo

    36、de physically contacting fibres IEC TR 62627-04, Fibre optic interconnecting devices and passive components Technical report Part 04: Example of uncertainty calculation: Measurement of the attenuation of an optical connector. 3 Performance grades Performance grades for APC polished reference connect

    37、ors are given in Table 1. The specified attenuation for each grade is obtained when the reference plugs are connected to each other with the reference adaptor. Table 1 Single-mode attenuation grades at 1 310 nm (dB) Reference grade aAttenuation adB Contribution to measurement uncertainty bdB R1 0,1

    38、0,1 R2 0,2 0,2 aUnder the assumption of worst case alignment with identical connector plug. Expected attenuation measured when connecting two plugs of the same grade may be higher due to significant measurement uncertainty bAs described in Clause 8. 4 Description Optical reference connector plugs ar

    39、e connector plugs manufactured with restricted tolerances for dimensions relevant to lateral and angular offset. These connector plugs are used for attenuation measurement purposes according to IEC 61300-3-4, and shall be considered as part of the measurement set-up since they strongly contribute to

    40、 its measurement uncertainty (for example see IEC TR 62627-04). The attenuation measurement uncertainty contributions for both grades of reference connectors are listed in Table 3. The principal performance of a reference connector plug is given by its contribution to measurement uncertainty (estima

    41、ted based on the reproducibility of an attenuation measurement of the same device performed using multiple different reference connector plugs of the same grade) which is determined by the accuracy with which the core of the optical fibre is aligned to the optical datum target and determines the ran

    42、dom attenuation performance of a reference connector population. The main parameters influencing the performance of the reference connector plugs are fibre core location, fibre core axis angle and mode field diameter variability. Figure 1 represents the fibre alignment tolerances for the two differe

    43、nt reference grades described in this standard, under the assumption of using selected reference fibre, described in Table 2. The design curves given in Figure 1 each represent maximum allowable combinations of a given specific fibre core location and an associated fibre core axis angle to not excee

    44、d the specified attenuation of any single considered connection. The design curves shown represent the determination of the parameters under a worst case mismatch of the mode field diameter of the selected fibres as given in Table 3, i.e. 9,1/9,3 m and a wavelength of 1 BS EN 61755-2-5:2015IEC 61755

    45、-2-5:2015 IEC 2015 7 310 nm. These mode field diameter ranges are selected within the IEC 60793-2-50 family specification for single-mode, non-dispersion shifted fibres as given in Table 2. 5 Criteria for a fit within performance grades 5.1 General Figure 1 and Table 2 give the criteria for meeting

    46、the performance grades listed above in Table 1. The parameters chosen for the criteria definition are based on the degree of significance in affecting the performance under test. 5.2 Attenuation grades and criteria Considering a beam with a Gaussian distribution, the coupling efficiency, , of two si

    47、ngle mode fibres is given by Equation (1). Table 2 Mode field diameter and fibre core nominal index of refraction for fibre to be used in reference connector plugs Fibre type Nominal wavelength nm MFD am n0(core) Min. Max. Dispersion unshifted fibre 1 310 9,1 9,3 1,452 0 aMFD as specified here has a

    48、 narrow tolerance compared to tolerance field in IEC 60793-2-50. The attenuation (also referred to as insertion loss, IL, or coupling efficiency) of the fibres equals combined.Attenuation combinedis expressedas in Equation (1) below:. ( )( )( )( )( )+= 22122212222022122222122212combinedsin22exp2log1

    49、0nd(1) where d is the total lateral offset; is the angular misalignment between fibre cores; is the wavelength of transmitted light in vacuum; n0 is the index of refraction of the fibre core; 1is the transmit fibre mode field radius; 2is the receive fibre mode field radius. The definition of reference connector grades is based on worst case calculation (unlike the other level 2 optical interface standards, IEC


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