《BS-EN-61300-3-13-1997 IEC-61300-3-13-1995.pdf》由会员分享，可在线阅读，更多相关《BS-EN-61300-3-13-1997 IEC-61300-3-13-1995.pdf（12页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 61300-3-13: 1997 IEC 61300-3-13: 1995 Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3.13: Examinations and measurements Control stability of a fibre optic switch The European Standard EN 61300-3-13:1997 has the status of
2、a British Standard ICS 33.180.20 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61300-3-13:1997 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of
3、 the Standards Board and comes into effect on 15 November 1997 BSI 04-2000 ISBN 0 580 28511 1 National foreword This British Standard is the English language version of EN 61300-3-13:1997. It is identical with IEC 61300-3-13:1995. The UK participation in its preparation was entrusted by Technical Co
4、mmittee EPL/86, Fibre optics, to Subcommittee EPL/86/2, Interconnecting devices and passive components, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and
5、 keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. 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 o
6、ld 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 in
7、clude 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 Stand
8、ards 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 Standa
9、rd does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated.
10、 This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61300-3-13:1997 BSI 02-2000i Contents Page National fore
11、wordInside front cover Foreword2 Text of EN 61300-3-133 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NOR
12、ME EUROPENNE EUROPISCHE NORM EN 61300-3-13 August 1997 ICS 33.180.20 English version Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-13: Examinations and measurements Control stability of a fibre optic switch (IEC 61300-3-13:1995) Dispositifs d
13、interconnexion et composants passifs fibres optiques Mthodes fondamentales dessais et de mesures Partie 3-13: Examens et mesures Stabilit de contrle dun interrupteur pour fibres optiques (CEI 61300-3-13:1995) Lichtwellenleiter Verbindungselemente und passive Bauteile Grundlegende Prf- und Meverfahre
14、n Teil 3-13: Untersuchungen und Messungen Schaltstabilitt eines faseroptischen Schalters (IEC 61300-3-13:1995) This European Standard was approved by CENELEC on 1997-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eu
15、ropean 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 Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (E
16、nglish, 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austri
17、a, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komite
18、e fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61300-3-13:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00
19、 2006, Uncontrolled Copy, (c) BSI EN 61300-3-13:1997 BSI 02-2000 2 Foreword The text of the International Standard IEC 61300-3-13:1995, prepared by SC 86B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the formal vote and was approved by CEN
20、ELEC as EN 61300-3-13 on 1997-07-01 without any modification. The following dates were fixed: 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 International Standard IE
21、C 61300-3-13:1995 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword2 1General3 1.1Scope and object3 1.2General description3 1.3Normative reference3 2Apparatus3 3Procedure4 4Details to be specified5 Annex ZA (normative) Normative references to internation
22、al publications with their corresponding European publications6 Figure 1 Test set-up4 Figure 24 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1998-06-01 latest date by which the national standards conflicti
23、ng with the EN have to be withdrawn(dow) 1998-06-01 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-3-13:1997 BSI 02-20003 1 General 1.1 Scope and object The purpose of this part of IEC 1300 is to measure the change in the optical c
24、haracteristics of a switch in a given state as the activation energy is varied. The measurement is conducted to ensure that the switch states are stable and insensitive to variations in the applied activation energy. 1.2 General description The activation energy is varied about its nominal value whi
25、le the optical characteristics (attenuation and return loss) are measured. The activation energy is continuously varied between a minimum and maximum level described in the detail specification. The control stability is determined by measuring the optical characteristics of the switch and expressed
26、as a range between the maximum and minimum values for a number of cycles defined in the detail specification. The control stability will, in general, be different for each different switch state. 1.3 Normative reference The following normative document contains provisions which, through reference in
27、 this text, constitute provisions of this section of IEC 1300-3. At the time of publication, the edition indicated was valid. All normative documents are subject to revision, and parties to agreements based on this section of IEC 1300-3 are encouraged to investigate the possibility of applying the m
28、ost recent edition of the normative document indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 875-1:1992, Fibre optic branching devices Part 1: Generic specification. 2 Apparatus The following apparatus and equipment are required to perform t
29、his measurement. 2.1 Optical source (S) The source shall be sufficiently stable over the time required to perform the measurements. The source shall be capable of producing the spectral characteristics defined in the detail specification (both wavelength and spectral width). 2.2 Excitation unit (E)
30、This is a special launch fibre or imaging system designed to achieve the required launch conditions. 2.3 Branching device (BD) This is a four-port branching device capable of being used at the wavelength of the optical source and has known transfer coefficients at that wavelength. 2.4 Temporary Join
31、t (TJ) This is a method, device or mechanical fixture for temporarily aligning two fibre ends into a reproducible, low-loss joint. It may, for example, be a precision V-groove vacuum chuck, micro manipulator, or a fusion or mechanical splice. The stability of the temporary joint shall be compatible
32、with the measurement precision required. 2.5 Detector A detector shall be used which has sufficient dynamic range to make the measurement. The detector shall be linear over the optical power levels expected to be encountered. Any detector non-linearity contributes directly to measurement error. The
33、detector shall have a sufficient active area and be placed sufficiently close to the output to capture all of the light emitting from the output fibre of the switch to be measured. 2.6 Reference fibre (RF) A fibre of the same type as the pigtail fibre of the specimen. When required, its length, dime
34、nsional and optical parameters shall be specified in the detail specification. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-3-13:1997 4 BSI 02-2000 3 Procedure The measurement is made by comparing the light transmitted through th
35、e component and that reflected from the component along the incident path with the optical power incident on the component and along the fibre. This is accomplished through repeated measurements which may be facilitated by the use of automated data acquisition. 3.1 Pre-condition the specimen as spec
36、ified. 3.2 Configure the measurement as shown in Figure 1. When setting up this measuring arrangement, care should be taken to interconnect all fibre components and interfaces so that the return loss from these interfaces is high and stable. Procedures to reduce the reflected power from the detector
37、s (D1) and (D3) and the temporary joints (TJ) to an acceptable level shall be used and specified in the detail specification. 3.3 Measure the transfer coefficients of the branching device BD in accordance with IEC 875-1. The source (S) for these measurements shall be the same as that used in the mea
38、surement set-up of Figure 1. 3.4 After ensuring the stability and repeatibility of the measurement set-up, record power levels P1, P2, and P3. 3.5 Remove the fibre length L1 from the set-up and replace it with the pigtailed component assembly as shown in Figure 2. The device under measurement (DUT)
39、shall be assembled in accordance with the manufacturers instructions. Particular attention should be given to the cleaning instructions and to the use of any required index matching materials. 3.6 After ensuring the stability of the temporary joints, record, and( is ideally unchanged from P3). 3.7 C
40、alculate the return loss using the following formula: Figure 1 Test set-up Figure 2 (1) P 1 P 2 P 3 P 3 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-3-13:1997 BSI 02-20005 3.8 Calculate the attenuation using the following formula
41、: 3.9 The activation energy is continuously varied between a minimum and maximum value as defined in the detail specification. While the activation energy is varied, record the maximum and minimum values of a and ar. 3.10 The control stability for a particular switch setting is given by: where the m
42、aximum and minimum values of a and ar are over all N cycles. 4 Details to be specified The following details, as applicable, shall be specified in the detail specification: Source (S) characteristics Excitation unit (E) Launch conditions Detector (D) characteristics Branching device requirements Fib
43、re lengths (L1, L2) Temporary joint (TJ) Preconditioning procedure Allowable added loss due to temporary joints Performance requirements (control stability of return loss, attenuation) Number of cycles Switch state measured Deviations from this measuring procedure. (2) %a =| a(max) a(min)|(3) %ar =|
44、 ar(max) ar(min)|(4) Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61300-3-13:1997 6 BSI 02-2000 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standa
45、rd incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate 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 t
46、his European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). NOTEWhen an international publication has been modified by common modifications, indicated by (mod), the relevant EN/H
47、D applies. PublicationYearTitleEN/HDYear IEC 60875-11992Fibre optic branching devices Part 1: Generic specification Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 12:28:46 GMT+00
48、:00 2006, Uncontrolled Copy, (c) BSI BS EN 61300-3-13: 1997 IEC 61300-3-13: 1995 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the inte
49、rnational level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be fou