1、BRITISH STANDARD BS EN 61300-2-40:2001 IEC 61300-2-40:2000 Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-40: Tests Screen testing of attenuation of single-mode tuned angled optical connectors The European Standard EN 61300-2-40:2000 has the s
2、tatus of a British Standard ICS 33.180.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61300-2-40:2001 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee
3、 and comes into effect on 15 June 2001 BSI 06-2001 ISBN 0 580 37206 5 National foreword This British Standard is the official English language version of EN 61300-2-40:2000. It is identical with IEC 61300-2-40:2000. The UK participation in its preparation was entrusted by Technical Committee GEL/86,
4、 Fibre optics, to Subcommittee GEL/86/2, Interconnecting devices and passive components, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the
5、 old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally
6、include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Sta
7、ndards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Stan
8、dard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Europe
9、an developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendme
10、nts issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61300-2-40 NORME EUROPENNE EUROPISCHE NORM December 2000 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Se
11、cretariat: rue de Stassart 35, B - 1050 Brussels 2000 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61300-2-40:2000 E ICS 33.180.20 English version Fibre optic interconnecting devices and passive components Basic test and measur
12、ement procedures Part 2-40: Tests - Screen testing of attenuation of single-mode tuned angled optical connectors (IEC 61300-2-40:2000) Dispositifs dinterconnexion et composants passifs fibres optiques - Mthodes fondamentales dessais et de mesures Partie 2-40: Essais Tri par mesure de laffaiblissemen
13、t des connecteurs pour fibres optiques monomodales angulaires de type accord (CEI 61300-2-40:2000) Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prf- und Messverfahren Teil 2-40: Prfungen - Sortierprfverfahren fr die Dmpfung von abgestimmten schrg angeschliffenen Einmod
14、en-LWL-Steckverbindern (IEC 61300-2-40:2000) This European Standard was approved by CENELEC on 2000-11-01. 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 alte
15、ration. 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 t
16、ranslation 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, Czech Republic, Denmark, Finland, France, Germany, Gre
17、ece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Foreword The text of document 86B/1325/FDIS, future edition 1 of IEC 61300-2-40, prepared by SC 86B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre
18、optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61300-2-40 on 2000-11-01. 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) 2001-08-01 l
19、atest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2003-11-01 Annexes designated “normative“ are part of the body of the standard. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the Internationa
20、l Standard IEC 61300-2-40:2000 was approved by CENELEC as a European Standard without any modification. _ Page2 EN61300240:2000 BSI 06-2001 CONTENTS Page Clause 1 General 4 1.1 Scope and object 4 1.2 General description. 4 1.3 Normative references 4 1.4 Adjusting sector 4 2 Apparatus 6 2.1 Optical s
21、ource (S). 6 2.2 Excitation unit (E) . 6 2.3 Detector (D) 6 2.4 Temporary joints (TJ) 6 2.5 Screen plug for tuned connector (SP) 6 2.6 Reference adaptor (RA) 6 3 Procedure 6 4 Details to be specified 7 Annex ZA (normative) Normative references to international publications with their corresponding E
22、uropean publications . 8 Page3 EN61300240:2000 BSI 06-2001 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 2-40: Tests Screen testing of attenuation of single-mode tuned angled optical connectors 1 General 1.1 Scope and object This part of IEC 61
23、300 describes the test for screening single-mode tuned connectors against tuning errors. It is applicable to single-mode angled connectors which are equipped with a tuning mechanism. The tests ensure that the plugs passing this test have attenuations lower than A max when they are randomly mated to
24、other connectors of the same type. 1.2 General description Attenuation is mainly caused by lateral misalignment of the respective fibre cores. The misalignment is related to the lateral offsets of the fibre core centre to the ferrule axis of each connector plug. In order to tune a connector, the plu
25、g shall have a lateral fibre core offset located in a specified adjusting sector. The screen test method described in the subsequent procedure is able to identify plugs having the desired performance. 1.3 Normative references The following normative documents contain provisions which, through refere
26、nce in this text, constitute provisions of this part of IEC 61300. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 61300 are encouraged to investigate the possibility of applying the mos
27、t recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 61300-3-4, Fibre optic interconnecting devices and passive
28、 components Basic test and measurement procedures Part 3-4: Examination and measurements Attenuation 1.4 Adjusting sector Each connector based on a “plug/adaptor/plug“ structure defines an (Oy) axis around which the two plugs are in a symmetrical position. Page4 EN61300240:2000 BSI 06-2001 Connectio
29、n axis Optical core Optical core Optical core Connection axis Adjusting sector ( adj ) (Oy) axis (Oy) axis True position of the screen plug core IEC 1070/2000 Figure 1 Adjusting sector and reference plug true position In every angled connector, the polishing angle ( ) is included in the plan (xOz).
30、The adjusting sector is around this (Oy) axis. Only two options are possible. The selected adjusting sector shall be defined in the relevant connector specification. The preferred orientation of the adjustment sector shall be the direction of the plug key (see figure 2). Key IEC 1071/2000 Figure 2 P
31、referred orientation of the adjustment sector for some constructions Example of angled connector scheme The size of the adjusting sector is adj= /N adj , where N adj(adjusting number) is recom- mended to be 4 or 6. Page5 EN61300240:2000 BSI 06-2001 2 Apparatus 2.1 Optical source (S) Unless stated ot
32、herwise in the test procedure, the recommended source is a laser diode. 2.2 Excitation unit (E) Unless stated otherwise in the test procedure, the excitation unit is only a single mode fibre length greater than 2 m. 2.3 Detector (D) Unless stated otherwise in the test procedure, the recommended dete
33、ctor is a large sensitive area. 2.4 Temporary joints (TJ) 2.5 Screen plug for tuned connector (SP) This is an angled polished plug which has a lateral offset of the fibre core eccentrically positioned at a theoretical true position, with a tolerance from this theoretical true position. This referenc
34、e plug shall be defined in the relevant connector specification. The preferred true position is located at 0,75 m from the ferrule axis, in the direction of the adjusting axis. The fibre core is within 0,3 m around this true position (see figure 1). In order to reduce dispersion in attenuation due t
35、o the mode field diameter difference the screen plug should use the same fibre type as the plug to be screened. 2.6 Reference adaptor (RA) The reference adaptor shall be defined in the connector detail or product specification. 3 Procedure Preconditioning procedure: The alignment and end surfaces of
36、 the plug ferrules and the adaptors shall be cleaned before test. The clean conditions shall be maintained during the test. The attenuation measurement methods shall comply with IEC 61300-3-4, Insertion method B, and shall be conducted at ambient temperature. No recovery procedures are required. The
37、 attenuation limit A ref for screening the plug under test depends on the connector construction. Measure the attenuation A oof the plug under test with a reference adaptor (RA) and a screen plug (SP). A ohas to be smaller than a specific value A ref . The relation between the maximum attenuation in
38、 random mating A maxthat is expected for screened plugs and A refshall be defined in the connector detail or product specification. If not, A refhas to be specified in the test procedure. Page6 EN61300240:2000 BSI 06-2001S/ES/E D SPRA SP PUT D TJ X TJ X A o A ref IEC 1072/2000 Figure 3 Test method 4
39、 Details to be specified The procedure of this screen test shall specify the following details: peak wavelength of optical source; maximum attenuation A max (dB); A ref (if not specified in the connector detail or product specification); deviation from test procedure; unless the preferred values giv
40、en in this test method are used, the following information shall be given or a reference shall be made to a specification providing the following information: source wavelength; screen plug definition; reference adaptor; pre-conditioning procedure; recovery procedure; additional pass/fail criteria.
41、_ Page7 EN61300240:2000Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate
42、 places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication
43、referred to applies (including amendments). NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 61300-3-4 1998 Fibre optic interconnecting devices and passive components - Basic test a
44、nd measurement procedures Part 3-4: Examination and measurements - Attenuation EN 61300-3-4 1998 Page8 EN61300240:2000BS EN 61300-2-40:2001 IEC 61300-2-40:2000 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing Br
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