1、 IEC 61300-3-42Edition 1.0 2007-11INTERNATIONAL STANDARD NORME INTERNATIONALEFibre 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
2、 sleeves Dispositifs dinterconnexion et composants passifs fibres optiques Procdures fondamentales dessais et de mesures Partie 3-42: Examens et mesures Affaiblissement apport par les manchons dalignement et/ou les raccords quips de manchons dalignement lastiques unimodaux IEC61300-3-42:2007 THIS PU
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17、contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61300-3-42Edition 1.0 2007-11INTERNATIONAL STANDARD NORME INTERNATIONALEFibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-42: Examinations and measurements Attenuati
18、on of single mode alignment sleeves and or adaptors with resilient alignment sleeves Dispositifs dinterconnexion et composants passifs fibres optiques Procdures fondamentales dessais et de mesures Partie 3-42: Examens et mesures Affaiblissement apport par les manchons dalignement et/ou les raccords
19、quips de manchons dalignement lastiques unimodaux INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE LICS 33.180.20 PRICE CODECODE PRIXISBN 2-8318-9426-3 2 61300-3-42 IEC:2007 CONTENTS FOREWORD.3 1 Scope.5 2 Normative references .5 3 General description 5 3.1 Attenu
20、ation5 3.2 Precautions in measuring attenuation6 4 Apparatus.6 4.1 Launch conditions and source (S) .6 4.2 Power meter (D)6 4.3 Reference plugs (RP) 7 4.4 Reference adaptors (Ar) 7 4.5 Mode filter (mf)7 5 Procedure 7 5.1 Pre-conditioning 7 5.2 Visual inspection .8 5.3 Attenuation measurement8 5.4 Pr
21、ocedure for measuring 8-position adaptor attenuation:.8 6 Details to be specified 9 Annex A (informative) Example results sheet .10 Bibliography11 Figure 1 Measurement of P08 Figure 2 Measurement of P18 Figure A.1 Example of results sheet.10 Table 1 Preferred source and launch conditions.6 Table 2 P
22、referred power-meter parameters7 61300-3-42 IEC:2007 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ 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 wi
23、th resilient alignment sleeves FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions co
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32、tions. 8) Attention is drawn to the Normative references 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 pa
33、tent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61300-3-42 has been prepared by subcommittee 86B: Fibre optic interconnecting devices and passive components, of IEC technical committee 86: Fibre optics. The text of this standar
34、d is based on the following documents: FDIS Report on voting 86B/2600/FDIS 86B/2644/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Par
35、t 2. 4 61300-3-42 IEC:2007 A list of all parts of the IEC 61300 series, published under the general title Fibre optic interconnecting devices and passive components Basic test and measurement procedures, can be found on the IEC website. The committee has decided that the contents of this publication
36、 will remain unchanged until the maintenance result 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, or amended. 61300-3-42 IEC:2007 5 FIBRE O
37、PTIC 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 1 Scope This part of IEC 61300 describes the method to measure the attenuat
38、ion of single mode adaptors with resilient sleeves and the attenuation of resilient sleeves. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edit
39、ion of the referenced document (including any amendments) applies. IEC 61300-1:2003 Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 1: General and guidance IEC 61300-3-1, Fibre optic interconnecting devices and passive components Basic test and m
40、easurement procedures Part 3-1: Examinations and measurements Visual examination IEC 61300-3-35 PAS, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-35: Examinations and measurements Fibre optic cylindrical connector endface visual inspection I
41、EC 61754 (all parts), Fibre optic connector interfaces IEC 61755-3 (all parts) Fiber optic connector optical interfaces Part 3: Optical interface 3 General description 3.1 Attenuation Attenuation is intended to give a value for the decrease of useful power, expressed in decibels, resulting from the
42、insertion of a device under test (DUT), within a length of optical fibre cable. The DUT may have more than two optical ports (multiple adaptors). However, since an attenuation measurement is made across only two ports, the DUTs in this standard shall be described as having two ports. The reference m
43、ethod for measuring attenuation is with an optical power meter. The measured attenuation is a result of the lateral offset between the fibre cores of the used connectors and the interaction between sleeve geometry and ferrule outer diameter. 6 61300-3-42 IEC:2007 3.2 Precautions in measuring attenua
44、tion The following test precautions shall be taken. The power in the fibre shall not be at a level high enough to generate non-linear scattering effects. A recommended level is less than 0 dBm. The position of the fibres in the test should be fixed between the measurement of P0and P1to avoid changes
45、 in attenuation due to bending loss. The relative rotation of the 2 plugs during the test shall be less than 5 4 Apparatus 4.1 Launch conditions and source (S) Unless otherwise specified, the launch condition shall be in accordance with Annex B of IEC 61300-1. The source unit consists of an optical
46、emitter, the associated drive electronics and fibre pigtail (if any). The preferred source and launch conditions are given in Table 1 below. Table 1 Preferred source and launch conditions Number Type Centre wavelengthnm Spectral width nm Stabilityat 23 oC dB/h Launch conditions (Annex B, IEC 61300-1
47、) Source type S4 Single-mode 1 310 30 120 0,05 B.2.2 LED NOTE For this measurement method an LED is chosen to avoid influences of polarisation sensitivity of the measurement set up. 4.2 Power meter (D) The power-meter unit consists of an optical detector, the mechanism for connecting to it and assoc
48、iated detection electronics. The connection to the detector will be with an adaptor that accepts a connector plug of the appropriate design. The measurement system shall be stable within specified limits over the period of time required to measure P0and P1. For measurements where the connection to t
49、he detector must be broken between the measurement of P0and P1, the measurement repeatability shall be within 0,02 dB. A detector with a large sensitive area may be used to achieve this.The precise characteristics of the detector shall be compatible with the measurement requirements. The dynamic range of the power meter shall be capable of measuring the power le
