EN 61300-3-45-2011 en Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-45 Examinations and measurements - Attenuation of .pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFibre optic interconnectingdevices and passive components Basic test and measurement proceduresPart 3-45: Examinations and measurements Attenuation of random mated multi-fibre co

2、nnectorsBS EN 61300-3-45:2011National forewordThis British Standard is the UK implementation of EN 61300-3-45:2011. It isidentical to IEC 61300-3-45:2011.The UK participation in its preparation was entrusted by Technical CommitteeGEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconne

3、ctingdevices and passive components.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 64523

4、 5ICS 33.180.20 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 July 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61

5、300-3-45:2011EUROPEAN STANDARD EN 61300-3-45 NORME EUROPENNE EUROPISCHE NORM June 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brusse

6、ls 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61300-3-45:2011 E ICS 33.180.20 English version Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-45: Examinations a

7、nd measurements - Attenuation of random mated multi-fibre connectors (IEC 61300-3-45:2011) Dispositifs dinterconnexion et composantspassifs fibres optiques - Mthodes fondamentales dessais et de mesures - Partie 3-45: Examens et mesures - Affaiblissement d laccouplement de connecteurs quelconques mul

8、tifibres (CEI 61300-3-45:2011) Lichtwellenleiter -Verbindungselemente und passive Bauteile - Grundlegende Prf- und Messverfahren - Teil 3-45: Untersuchungen und Messungen - Dmpfung von zufllig gesteckten Mehrfasersteckverbindern (IEC 61300-3-45:2011) This European Standard was approved by CENELEC on

9、 2011-06-16. 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 alteration. Up-to-date lists and bibliographical references concerning such national standards may

10、 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 translation under the responsibility of a CENELEC member into its own language and notified to

11、the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuan

12、ia, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61300-3-45:2011EN 61300-3-45:2011 - 2 - Foreword The text of document 86B/3177/FDIS, future edition 1 of IEC 61300-3-45, prepared by SC 86B, Fibre o

13、ptic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61300-3-45 on 2011-06-16. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ri

14、ghts. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. 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) 2012-03-16 latest date by wh

15、ich the national standards conflicting with the EN have to be withdrawn (dow) 2014-06-16 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61300-3-45:2011 was approved by CENELEC as a European Standard without any modification. _ BS EN 61300-3-45:201

16、1- 3 - EN 61300-3-45:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undate

17、d references, the latest edition of the referenced document (including any amendments) applies. 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 61300-1 - Fibre optic interconnectin

18、g devices and passive components - Basic test and measurement procedures - Part 1: General and guidance EN 61300-1 - IEC 61300-3-1 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-1: Examinations and measurements - Visual examination EN 61

19、300-3-1 - IEC 61300-3-35 - Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-35: Examinations and measurements - Fibre optic cylindrical connector endface visual and automated inspection EN 61300-3-35 - IEC 61754 Series Fibre optic connector

20、interfaces EN 61754 Series BS EN 61300-3-45:2011 2 61300-3-45 IEC:2011 CONTENTS 1 Scope . 5 2 Normative references 5 3 General description . 5 3.1 Test methods 5 3.2 Precautions . 6 4 Apparatus . 7 4.1 Source (S) . 7 4.2 Launch conditions (E) 7 4.3 Detector (D). 7 5 Procedure . 8 5.1 Method 1 . 8 5.

21、2 Method 2 . 10 5.3 Analysis of results . 13 6 Details to be specified . 13 Figure 1 “Reference” cord measurement Method 1 8 Figure 2 Test cord measurement Method 1 8 Figure 3 Test matrix and labelling for measuring method 1 (2-fibre connector) . 9 Figure 4 Test matrix and labelling for measuring me

22、thod 1 (4-fibre connector) 10 Figure 5 Test matrix and labelling for measuring method 1 (8, 10, 12-fibre connector). 10 Figure 6 “Reference” cord measurement (1) Method 2 . 11 Figure 7 Test cord measurement (1) Method 2 . 11 Figure 8 “Reference” cord measurement (2) Method 2 . 12 Figure 9 Test cord

23、measurement (2) Method 2 . 12 Figure 10 Test matrix and labelling for measuring method 2 (2-fibre connector) 12 Figure 11 Test matrix and labelling for measuring method 2 (4-fibre connector) 13 Figure 12 Test matrix and labelling for measuring method 2 (8, 10, 12-fibre connector) . 13 Table 1 Sample

24、 size for Method 1. 6 Table 2 Sample size for Method 2. 6 BS EN 61300-3-45:201161300-3-45 IEC:2011 5 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 3-45: Examinations and measurements Attenuation of random mated multi-fibre connectors 1 Scope Th

25、e purpose of this part of IEC 61300 is to describe the procedure required to measure the statistical distribution and mean attenuation for random mated optical connectors with physical contact (PC) and angled physical contact (APC) polished 1-row multi-fibre rectangular ferrules as defined in the IE

26、C 61754 series. This measurement method is applicable to cable assemblies. 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 edition of the referen

27、ced document (including any amendments) applies. IEC 61300-1, 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 measurement procedures

28、Part 3-1: Examinations and measurements Visual examination IEC 61300-3-35, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-35: Examinations and measurements Fibre optic connector endface visual and automated inspection IEC 61754 (all parts), Fi

29、bre optic connector interfaces 3 General description 3.1 Test methods Two test methods are described for measuring the attenuation of random mated optical connectors. Both provide an estimate of the expected average performance that a group of cable assemblies (including an adaptor, if applicable) s

30、elected from a batch will exhibit when used in an optical system. The cable assemblies, and any adaptors, must be chosen at random to ensure that the measurements provide a statistically unbiased estimate. Method 1 describes the procedure using a sample of cable assemblies and adaptors specified in

31、Table 1. In this case the plugs (with pins) are used as “reference” plugs and the plugs (without pins) are tested against them sequentially. The results, based on the number of measurements specified in Table 1, are recorded in the test matrix shown in Figures 3 to 5. Method 1 is intended to be part

32、 of a design approval exercise that may involve one or more suppliers. Once approval is achieved, Method 2 would be relied on to maintain process control. However, in the event of a dispute, Method 1 shall act as the reference measurement method. BS EN 61300-3-45:2011 6 61300-3-45 IEC:2011 Method 2

33、describes a procedure for the measurement of a sample of cable assemblies specified in Table 2. Three cable assemblies are selected from the sample as “reference” cable assemblies and pins are fitted. The other test cable assemblies (without pins) are tested against each of the three “reference cabl

34、e assemblies” sequentially. This produces the number of measurements specified in Table 2 and the results are recorded in the test matrix shown in Figures 10 to 12. It is recognised that the number of measurements required by Method 1 may be excessive for day-to-day routine checking of either in-hou

35、se or supplier produced products. In this case, as indicated above, Method 2 may be an alternative option. NOTE In this measurement method, the terms “reference” plug or “reference” cord are used to define those components chosen at random from a batch, against which a number of comparative measurem

36、ents are made. It is not intended that the terms should imply specially chosen or manufactured components, such as those used, for example, in screen testing. Table 1 Sample size for Method 1 Connector (n-fibre connector) Sample size Cord and adaptors Measurements Fibres 2-fibre connector 15 210 420

37、 4-fibre connector 12 132 528 8-fibre connector 10 90 720 10-fibre connector 10 90 900 12-fibre connector 10 90 1 080 Table 2 Sample size for Method 2 Connector (n-fibre connector) Sample size Cord and adaptors Measurements Fibres Total Reference Test :N 2-fibre connector 12 3 9 54 108 4-fibre conne

38、ctor 8 3 5 30 120 8-fibre connector 6 3 3 18 144 10-fibre connector 6 3 3 18 180 12-fibre connector 6 3 3 18 216 3.2 Precautions The following test requirements shall be met. a) Precautions shall be taken to ensure that the cladding modes do not affect the measurement. Cladding modes shall be stripp

39、ed as a function of the fibre coating. b) Precautions shall be taken to ensure that the position of the fibres in the test remains fixed between the measurement of P1and P2to avoid changes in attenuation due to bending losses. c) The stability performance of the test equipment shall be 0,05 dB or 10

40、 % of the attenuation to be measured, whichever is the lower value. The stability shall be maintained over the measurement time and operational temperature range. The required measurement resolution shall be 0,01 dB for both multimode and single mode. BS EN 61300-3-45:201161300-3-45 IEC:2011 7 d) To

41、 achieve consistent results, clean and inspect all connectors and adaptors prior to measurement. Visual examination shall be undertaken in accordance with IEC 61300-3-1 and IEC 61300-3-35. NOTE A cladding mode stripper usually comprises a material having a refractive index equal to or greater than t

42、hat of the fibre cladding. 4 Apparatus 4.1 Source (S) The source consists of an optical emitter, the means to connect to it and associated drive electronics. In addition to meeting the stability and power level requirements, the source shall have the following characteristics: Centre wavelength, as

43、detailed in the performance and product standard; Spectral width, filtered light emitting diode (LED) 150 nm full width half maximum (FWHM); Spectral width, laser diode (LD) 10 nm FWHM. For multimode fibres, broadband sources such as an LED shall be used. For single mode fibres either an LED or LD m

44、ay be used. NOTE The interference of modes from a coherent source will create speckle patterns in multimode fibres. These speckle patterns give rise to speckle or modal noise and are observed as power fluctuations, since their characteristic times are longer than the resolution time of the detector.

45、 As a result, it may be impossible to achieve stable launch conditions using coherent sources for multimode measurements. Consequently, lasers, including optical time domain reflectometer (OTDR) sources, should be avoided in favour of LEDs or other incoherent sources for measuring multimode componen

46、ts. 4.2 Launch conditions (E) The launch condition shall be specified in accordance with IEC 61300-1. 4.3 Detector (D) The detector consists of an optical detector, the means to connect to it and associated electronics. The connection to the detector will be an adaptor that accepts a connector plug

47、of the appropriate design. The detector shall capture all light emitted by the connector plug. In addition to meeting the stability and resolution requirements, the detector shall have the following characteristics: Linearity of multimode, 0,25 dB (over 5 dBm up to 60 dBm); Linearity of single mode,

48、 0,1 dB (over 5 dBm up to 60 dBm). NOTE The power meter linearity should be referenced to a power level of 23 dBm at the operational wavelength. Where the connection to the detector is broken between the measurement of P1 and P2, the measurement repeatability shall be within 0,05 dB or 10 % of the a

49、ttenuation to be measured, whichever is the lower value. A large sensitive area detector 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 level exiting from the device under test (DUT) at the wavelength being measured. BS EN 61300-3-45:2011 8 61300-3-45 IEC:20