1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Filtered optical power meter methodThe European Standard EN 61290-7-1:2007 has the status of a Brit
2、ish StandardICS 33.180.30Optical amplifiers Test methods Part 7-1: Out-of-band insertion losses BRITISH STANDARDBS EN 61290-7-1:2007BS EN 61290-7-1:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 September 2007 BSI 2007ISBN 978 0 580 5
3、7554 9Amendments issued since publicationAmd. No. Date Commentsrequest to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obli
4、gations.National forewordThis British Standard is the UK implementation of EN 61290-7-1:2007. It is identical to IEC 61290-7-1:2007. It supersedes BS EN 61290-7-1:1998 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommitte
5、e GEL/86/3, Fibre optic systems and active devices.A list of organizations represented on this committee can be obtained on EUROPEAN STANDARD EN 61290-7-1 NORME EUROPENNE EUROPISCHE NORM June 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrot
6、echnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61290-7-1:2007 E ICS 33.180.30 Supersedes EN 61290-7-1:1998E
7、nglish version Optical amplifiers - Test methods - Part 7-1: Out-of-band insertion losses - Filtered optical power meter method (IEC 61290-7-1:2007) Amplificateurs optiques - Mthodes dessai - Partie 7-1: Pertes dinsertion hors-bande - Mthode par puissance-mtre optique filtr (CEI 61290-7-1:2007) Prfv
8、erfahren fr Lichtwellenleiter-Verstrker - Teil 7-1: Einfgungsdmpfungen auerhalb des Bandes - Leistungsmessverfahren mit optischem Filter (IEC 61290-7-1:2007) This European Standard was approved by CENELEC on 2007-05-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations wh
9、ich 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 be obtained on application to the Central Secretariat or to any CENELEC member. This Europea
10、n 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 the Central Secretariat has the same status as the official versions. CENELEC members are the
11、 national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
12、Sweden, Switzerland and the United Kingdom. EN 61290-7-1:2007 2 Foreword The text of document 86C/726/CDV, future edition 2 of IEC 61290-7-1, prepared by SC 86C, Fibre optic systems and active devices, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel Unique Acceptance Procedure
13、and was approved by CENELEC as EN 61290-7-1 on 2007-05-01. This European Standard supersedes EN 61290-7-1:1998. The main significant changes are the following: the title has been changed to be consistent with other documents in the EN 61290 series; the applicability has been extended to all commerci
14、ally available optical amplifiers - not just optical fiber amplifiers; Clause 9, EMC, has been added. This standard is to be used in conjunction with EN 61291-1:2006. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical na
15、tional standard or by endorsement (dop) 2008-02-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-05-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61290-7-1:2007 was approved by CENELEC as a
16、 European Standard without any modification. _ 3 EN 61290-7-1:2007 CONTENTS INTRODUCTION 4 1 Scope and object5 2 Normative references .5 3 Abbreviated terms 5 4 Apparatus 5 5 Test sample .6 6 Procedure 7 7 Calculation .7 8 Test results 7 9 Electromagnetic compatibility (EMC) requirements8 Annex ZA (
17、normative) Normative references to international publications with their corresponding European publications .10 Bibliography .9 Figure 1 Typical arrangement of the optical filter test apparatus for out-of-band insertion loss measurements 6 EN 61290-7-1:2007 4 INTRODUCTION This International Standar
18、d is devoted to the subject of optical amplifiers. The technology of optical amplifiers is still rapidly evolving, hence amendments and new additions to this standard can be expected. 5 EN 61290-7-1:2007 OPTICAL AMPLIFIERS TEST METHODS Part 7-1: Out-of-band insertion losses Filtered optical power me
19、ter method 1 Scope and object This part of IEC 61290 applies to optical amplifiers (OAs) using active fibres presently commercially available containing rare-earth dopants. The object of this standard is to establish uniform requirements for accurate and reliable measurements, by means of the filter
20、ed optical power meter test method, of the following OA parameters, as defined in IEC 61291-1: a) out-of-band insertion loss; b) out-of-band reverse insertion loss. NOTE 1 The out-of-band insertion loss of an OA is highly dependent on the amplifier configuration and the out-of-band wavelength. NOTE
21、2 All numerical values followed by () are suggested values. 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 referenced document (i
22、ncluding any amendments) applies. IEC 61291-1, Optical amplifiers Part 1: Generic specification 3 Abbreviated terms Each abbreviation introduced in this standard is explained in the text at least the first time it appears. However, for an easier understanding of the whole text, the following is a li
23、st of all abbreviations used in this standard: OA Optical amplifier EMC Electromagnetic compatibility ESD Electrostatic discharge 4 Apparatus A scheme of the measurement set-up is given in Figure 1. EN 61290-7-1:2007 6 Figure 1 Typical arrangement of the optical filter test apparatus for out-of-band
24、 insertion loss measurements The test equipment listed below, with the required characteristics, is needed: a) optical source: the optical source shall generate a light at the out-of-band wavelength specified in the relevant detail specification. Unless otherwise specified, the optical source shall
25、emit a continuous wave with the full width at half maximum of the spectrum narrower than 1 nm (); b) optical isolator: the polarization-dependent loss variation of the isolator, at the out-of-band wavelength, shall be better than 0,2 dB (). Optical isolation shall be better than 40 dB (). The reflec
26、tance from this device shall be smaller than 40 dB () at each port; c) optical filter: it shall be pass band at the out-of-band wavelength, and have a high loss over the OA (optical amplifier) pump and signal wavelength ranges, in such a way as to render the total power in these wavelength ranges mo
27、re than 20 dB () lower than the out-of-band power after passing through the OA; d) optical power meter: it shall have a measurement accuracy better than 0,2 dB, irrespective of the state of polarization, at the out-of-band wavelength of the OA; e) optical fibre jumpers: the mode field diameter of th
28、e optical fibre jumpers used should be as close as possible to that of fibres used at input and output ports of the OA. Their reflectance shall be smaller than 40 dB () at each port, and the length of each jumper shall be less than 2 m. 5 Test sample The OA shall operate as specified in the relevant
29、 detail specification. NOTE The operating conditions of the OA under test could be, for instance, the nominal operating conditions or the unpowered conditions. Figure 1b Out-of-band insertion loss measurementA B C Figure 1a Optical filter calibration OPTICAL SOURCE Optical source Optical source C IE
30、C 665/98 IEC 664/98 A B OA Optical isolator Optical isolator Opticalfilter Opticalfilter OA under test Optical power meter Optical power meter 7 EN 61290-7-1:2007 6 Procedure This method permits determination of the OA out-of-band insertion losses according to the procedures described below: a) out-
31、of-band insertion loss: 1) set the optical source at the out-of-band wavelength, as specified in the relevant detail specification; 2) calibrate the optical filter measuring the optical power at the out-of-band wavelength P0with the optical power meter, without the OA, as shown in Figure 1a; 3) inse
32、rt the OA under test, as shown in Figure 1b, and measure the optical power P1 at the out-of-band wavelength, with the optical power meter. b) out-of-band reverse insertion loss: As in a), but with the OA inserted with the input port used as output port and vice-versa. 7 Calculation Calculation shall
33、 be carried out as indicated below. a) Out-of-band insertion loss Calculate the OA out-of-band insertion loss, LOB, from the power levels P0and P1(in dBm), as: LOB = P0 P1(dBm) b) Out-of-band reverse insertion loss As in a), taking into account that LOBrepresents, in this case, the out-of-band rever
34、se insertion loss of the OA. 8 Test results Report the following information for each test. a) Out-of-band insertion loss The following details shall be presented: 1) arrangement of the test set-up; 2) spectral linewidth (full width at half maximum) of the optical source; 3) out-of-band wavelengths
35、of the measurement; 4) indication of the optical pump power (if applicable); 5) ambient temperature (if required); 6) out-of-band insertion loss. b) Out-of-band reverse insertion loss In addition to details 1) to 5), previously listed for the out-of-band insertion loss, the following shall be presen
36、ted: 6) out-of-band reverse insertion loss. EN 61290-7-1:2007 8 9 Electromagnetic compatibility (EMC) requirements The devices and assemblies addressed by the present standard shall comply with suitable requirements for electromagnetic compatibility (in terms of both emission and immunity), dependin
37、g on particular usage/environment in which they are intended to be installed or integrated. Guidance on the drafting of such EMC requirements is provided in IEC Guide 107. Guidance for electrostatic discharge (ESD) is still under study. 9 EN 61290-7-1:2007 Bibliography IEC Guide 107, Electromagnetic
38、 compatibility Guide to the drafting of electromagnetic compatibility publications IEC 60793-1(all parts), Optical fibres Part 1: Measurement methods and test procedures IEC 60825-1, Safety of laser products Part 1: Equipment classification, requirements and users guide IEC 60825-2, Safety of laser
39、products Part 2: Safety of optical fibre communication systems (OFCS) IEC 60874-1, Connectors for optical fibres and cables Part 1: Generic specification IEC/TR 61931, Fibre optic Terminology _ NOTE Harmonized in EN 60793-1 series (not modified). NOTE Harmonized as EN 60825-2:2004 (not modified). NO
40、TE Harmonized as EN 60874-1:2003 (not modified). EN 61290-7-1:2007 10 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
41、, only the edition cited applies. For undated 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 Y
42、ear IEC 61291-1 - 1)Optical amplifiers - Part 1: Generic specification EN 61291-1 2006 2)1) Undated reference. 2)Valid edition at date of issue. blankBS EN BSI389 Chiswick High RoadLondonW4 4AL61290-7-1:2007BSI British Standards InstitutionBSI is the independent national body responsible for prepari
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