1、 IEC 61300-2-43 Edition 2.0 2014-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-43: Tests Screen testing of return loss of single-mode PC optical fibre connectors Dispositifs dinterconnexion et co
2、mposants passifs fibres optiques Procdures fondamentales dessais et de mesures Partie 2-43: Essais Slection des connecteurs PC pour fibres optiques unimodales en fonction de leur affaiblissement de rflexion IEC 61300-2-43:2014-06(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Gen
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20、n ou si vous avez des questions contactez-nous: csciec.ch. IEC 61300-2-43 Edition 2.0 2014-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 2-43: Tests Screen testing of return loss of single-mode PC
21、optical fibre connectors Dispositifs dinterconnexion et composants passifs fibres optiques Procdures fondamentales dessais et de mesures Partie 2-43: Essais Slection des connecteurs PC pour fibres optiques unimodales en fonction de leur affaiblissement de rflexion INTERNATIONAL ELECTROTECHNICAL COMM
22、ISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE M ICS 33.180.20 PRICE CODE CODE PRIX ISBN 978-2-8322-1640-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from
23、 an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 61300-2-43:2014 IEC 2014 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references 5 3 General description . 5 4 Apparatus 5 5 Procedure 6 5.1 Selection of the reflection s
24、tandard cord . 6 5.2 Cord screen testing . 6 5.3 Pigtail cord screen testing . 6 6 Details to be specified . 7 Annex A (informative) Screen testing of return loss of pigtails having PC fibre optic connector 8 Bibliography 13 Figure 1 Measurement set-up for open plug reflection standard . 6 Figure 2
25、Measurement set-up for mated reflection standard cords . 6 Figure 3 Measurement set-up for cord screen testing . 6 Figure 4 Measurement set-up for pigtail cord screen testing 7 Figure A.1 Measurement set-up of the screen test method . 9 Figure A.2 Relationship between and . 10 Figure A.3 Cumulative
26、probability of return loss before test 11 Figure A.4 Cumulative probability of return loss after test 11 Figure A.5 Relationship between power and . 12 Figure A.6 Measurement set-up of the reflected powers . 12 IEC 61300-2-43:2014 IEC 2014 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIBRE OPTIC IN
27、TERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 2-43: Tests Screen testing of return loss of single-mode PC optical fibre connectors FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
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37、ferences cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible f
38、or identifying any or all such patent rights. International Standard IEC 61300-3-43 has been prepared by subcommittee 86B: Fibre optic interconnecting devices and passive components, of IEC technical committee 86: Fibre optics. This second edition of IEC 61300-3-43 cancels and replaces the first edi
39、tion published in 1999 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) revision of the scope; b) revision of the procedure; c) addition of measurement uncertainty into the Details to be specified; d) add
40、ition of a bibliography. 4 IEC 61300-2-43:2014 IEC 2014 The text of this standard is based on the following documents: CDV Report on voting 86B/3669/CDV 86B/3755/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. Th
41、is publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 61300 series, published under the general title, Fibre optic interconnecting and passive components Basic test and measurement procedures, can be found on the IEC website. The committee
42、has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, o
43、r amended. IEC 61300-2-43:2014 IEC 2014 5 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 2-43: Tests Screen testing of return loss of single-mode PC optical fibre connectors 1 Scope This part of IEC 61300 aims at screening single-mode physical c
44、ontact (PC) optical fibre connectors of an optical fibre cord or an optical fibre pigtail in terms of return loss, thus ensuring minimum return loss when the connectors, which have been screen tested by this method, are randomly mated with each other in the field. 2 Normative references The followin
45、g 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 amendments) applies. IEC 61300-3-6, Fibr
46、e optic interconnecting devices and passive components Basic test and measurement procedures Part 3-6: Examinations and measurements Return loss 3 General description The domed ferrule end faces of PC connectors (not angled) are produced by a polishing process. This polishing process results in a th
47、in damaged layer at the fibre end face of the connector. In silica fibres, the refractive index of the damaged layer is slightly higher than that of original fibre. This high refractive index layer generates optical reflection. When PC connectors are mated, return loss occurs as a result of multiple
48、 reflections at the two damaged layers of the butted connectors. This test procedure ensures that a designed minimum return loss is achieved when PC connectors are randomly mated. It screens cords or pigtails by using a pair of reflection standard plug (RP) cords. The pair of reflection standard plu
49、gs is selected on the condition that the return loss when the plugs are mated is several decibels better than the designed minimum return loss. Cords which pass this test will achieve the designed minimum return loss in over 99 % of cases when randomly mated (see Annex A). 4 Apparatus The equipment listed below shall be chosen according to the method used to measure the connect
