EN 61290-1-2015 en Optical amplifiers - Test methods - Part 1 Power and gain parameters.pdf

1、BSI Standards PublicationOptical amplifiers Test methodsPart 1: Power and gain parametersBS EN 61290-1:2015National forewordThis British Standard is the UK implementation of EN 61290-1:2015. It isidentical to IEC 61290-1:2014.The UK participation in its preparation was entrusted by TechnicalCommitte

2、e GEL/86, Fibre optics, to Subcommittee GEL/86/3, Fibre optic systems and active devices.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 ofa contract. Users are responsible for

3、its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 83420 2ICS 33.180.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and

4、 Strategy Committee on 28 February 2015.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61290-1:2015EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 61290-1 February 2015 ICS 33.180.30 English Version Optical amplifiers - Test methods - Part 1: Power and gain p

5、arameters (IEC 61290-1:2014) Amplificateurs optiques - Mthodes dessai - Partie 1: Paramtres de puissance et de gain (IEC 61290-1:2014) Prfverfahren fr Lichtwellenleiter-Verstrker - Teil 1: Optische Leistungs- und Verstrkungsparameter (IEC 61290-1:2014) This European Standard was approved by CENELEC

6、on 2015-01-20. 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 m

7、ay be obtained on application to the CEN-CENELEC Management Centre 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

8、notified to the CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, German

9、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation

10、 ElectrotechniqueEuropisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 61290-1:2015 E EN 61290-1:2015 - 2 - Foreword Th

11、e text of document 86C/1188/CDV, future edition 1 of IEC 61290-1, prepared by SC 86C “Fibre optic systems and active devices“ of IEC/TC 86 “Fibre optics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61290-1:2015. The following dates are fixed: latest date by which the

12、 document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-10-20 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-01-20 Attention is drawn to the possibility that some of the

13、 elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61290-1:2014 was approved by CENELEC as a European Standard without any modifi

14、cation. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60793-1-1 NOTE Harmonized as EN 60793-1-1. IEC 60793-1-40 NOTE Harmonized as EN 60793-1-40. IEC 60825-1 NOTE Harmonized as EN 60825-1. IEC 60825-2 NOTE Harmonized as EN 60825-2. I

15、EC 60874-1 NOTE Harmonized as EN 60874-1. IEC 61290-10 NOTE Harmonized as EN 61290-10 series (not modified). BS EN 61290-1:2015- 3 - EN 61290-1:2015 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whol

16、e 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. NOTE 1 When an International Publicatio

17、n has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year IEC 61290-1-1 - Optical amplifiers - T

18、est methods - Part 1-1: Power and gain parameters - Optical spectrum analyzer method EN 61290-1-1 - IEC 61290-1-2 - Optical amplifiers - Test methods - Part 1-2: Power and gain parameters - Electrical spectrum analyzer method EN 61290-1-2 - IEC 61290-1-3 - Optical amplifiers - Test methods - Part 1-

19、3: Power and gain parameters - Optical power meter method EN 61290-1-3 - IEC 61291-1 2012 Optical amplifiers - Part 1: Generic specification EN 61291-1 2012 BS EN 61290-1:2015 2 IEC 61290-1:2014 IEC 2014 CONTENTS 1 Scope and object . 5 2 Normative references 5 3 Acronyms and abbreviations 6 4 Optica

20、l power and gain test method . 6 5 Optical power and gain parameters . 6 6 Test results . 11 Bibliography 14 Figure 1 Typical behaviour of the gain as a function of the input signal power 7 Figure 2 Typical behaviour of the gain as a function of the wavelength 7 Figure 3 Typical behaviour of the gai

21、n as a function of the temperature . 8 Figure 4 Typical behaviour of the gain as a function of the wavelength 9 Figure 5 Typical behaviour of the gain fluctuation as a function of time 9 Figure 6 Typical behaviour of the output power fluctuation as a function of time 10 Figure 7 Typical behaviour of

22、 the gain as a function of the input signal power 11 Figure 8 Typical behaviour of the output power as a function of the input signal power . 11 BS EN 61290-1:2015IEC 61290-1:2014 IEC 2014 5 OPTICAL AMPLIFIERS TEST METHODS Part 1: Power and gain parameters 1 Scope and object This part of 61290 appli

23、es to all commercially available optical amplifiers (OAs) and optically amplified subsystems. It applies to OAs using optically pumped fibres (OFAs based on either rare-earth doped fibres or on the Raman effect), semiconductors (SOAs), and waveguides (POWAs). NOTE 1 The applicability of the test met

24、hods described in the present standard to distributed Raman amplifiers is still under study. The object of this standard is to establish uniform requirements for accurate and reliable measurements of the following OA parameters, as defined in Clause 3 of IEC 61291-1:2012: a) nominal output signal po

25、wer; b) gain; c) reverse gain; d) maximum gain; e) maximum gain wavelength; f) maximum gain variation with temperature; g) gain wavelength band; h) gain wavelength variation; i) gain stability; j) polarization-dependent gain; k) large-signal output stability; l) saturation output power; m) maximum o

26、utput signal power; n) maximum total output power. NOTE 2 All numerical values followed by ().are suggested values for which the measurement is assured. Other values are acceptable if verified. The object of this standard is specifically directed to single-channel amplifiers. For multichannel amplif

27、iers, one should refer to the IEC 61290-10 series. 2 Normative references The following 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 edit

28、ion of the referenced document (including any amendments) applies. IEC 61290-1-1, Optical amplifiers Test methods Part 1-1: Power and gain parameters Optical spectrum analyzer method IEC 61290-1-2, Optical amplifiers Test methods Part 1-2: Power and gain parameters Electrical spectrum analyzer metho

29、d BS EN 61290-1:2015 6 IEC 61290-1:2014 IEC 2014 IEC 61290-1-3, Optical amplifiers Test methods Part 1-3: Power and gain parameters Optical power meter method IEC 61291-1:2012, Optical amplifiers Part 1: Generic specification 3 Acronyms and abbreviations ASE amplified spontaneous emission OA optical

30、 amplifier OFA optical fibre amplifier SOA semiconductor optical amplifier FWHM full width at half maximum OSA optical spectrum analyzer 4 Optical power and gain test method Three commonly practised procedures for quantifying the optical power and gain of an OA are considered in this standard. The a

31、im of the first procedure (see IEC 61290-1-1) is to determine the optical power and gain by means of the optical spectrum analyzer test method. The aim of the second procedure (see IEC 61290-1-2) is to determine the optical power and gain by means of an optical detector and an electrical spectrum an

32、alyzer. The aim of the third procedure (see IEC 61290-1-3) is to determine the optical power and gain by means of an optical power meter and an optical bandpass filter. 5 Optical power and gain parameters The parameters listed below are required for gain and power: a) Nominal output signal power: Th

33、e nominal output signal power is given by the minimum output signal optical power, for an input signal optical power specified in the relevant detail specification, and under nominal operating conditions, given in the relevant detail specification. To find this minimum value, input and output signal

34、 power levels shall be continuously monitored for a given duration of time and in presence of changes in the state of polarization and other instabilities, as specified in the relevant detail specification. The measurement procedures and calculations are described in each test method. b) Gain: The m

35、easurement procedures and calculations are described in each test method. c) Reverse gain: As in b), but with the OA operating with the input port used as output port and vice-versa. d) Maximum gain: As in b), but use a wavelength-tuneable optical source, repeat all procedures at different wavelengt

36、hs in a way to cover the wavelength range specified in the relevant detail specification. Unless otherwise specified, the wavelength should be changed by steps smaller than 1 nm () around the wavelength where the ASE spectral profile, observed (e.g. with an optical spectrum analyzer or a monochromat

37、or) without the input signal, takes its maximum value. NOTE 1 A wavelength measurement accuracy of 0,01 nm, within the operating wavelength range of the OA, is attainable with commercially available wavelength meters based on interference-fringes counting techniques. Some tuneable external-cavity la

38、ser-diode instruments provide a wavelength measurement accuracy of 0,2 nm. The gain values are measured at the different wavelengths as described in b) above. The maximum gain shall be given by the highest of all these gain values at nominal operating BS EN 61290-1:2015IEC 61290-1:2014 IEC 2014 7 co

39、ndition. Figure 1 shows the typical behaviour of the gain as a function of the input signal power. Small-signal gain Linear region Input signal power (dBm) Signalgain (dB)IEC Figure 1 Typical behaviour of the gain as a function of the input signal power e) Maximum gain wavelength: As in d) above, th

40、e maximum gain wavelength shall be the wavelength at which the maximum gain occurs. Refer to Figure 2 for typical gain behaviour for different wavelengths. Signal gain(dB)Signal wavelength (nm)Gain wavelength bandN dBMaximum gainMaximum gain wavelengthIECFigure 2 Typical behaviour of the gain as a f

41、unction of the wavelength f) Maximum gain variation with temperature: The maximum change of signal gain for a certain specified temperature range. The measurement procedures and calculations are described below shall be followed, with reference to the measurement set-up and procedure for each test m

42、ethod: 1) As described in b), measure the maximum gain Gmax-Tmpwithin the variation of temperature, as specified in the relevant detail specification. 2) As described in b), measure the minimum gain Gmin-Tmpwithin the variation of temperature, as specified in the relevant detail specification. 3) Ma

43、ximum gain variation with temperature Gtmpis given by the following formula: Gtmp= Gmax-tmp Gmin-tmp (dB) 1 Refer to Figure 3. Gain variation with temperature may depend on the signal wavelength owing to its active fibre characteristics. The wavelength at which the parameter is specified and measure

44、d should be stated. BS EN 61290-1:2015 8 IEC 61290-1:2014 IEC 2014 Signal gain(dB)Temperature (C)Gmax-tmpTmaxGmin-tmpTminSpecified temperature rangeGain variation withtemperatureGtmpIECFigure 3 Typical behaviour of the gain as a function of the temperature g) Gain wavelength band: Measure the maximu

45、m gain as described in d). Identify those wavelengths at which the gain is N dB below the maximum gain. The gain wavelength band shall be given by the wavelength interval(s) comprised between those wavelengths within which the gain is comprised between the maximum gain value and a value N dB below t

46、he maximum gain. Calculations are processed according to the following procedure. 1) Plot the gain of each wavelength to the gains of adjacent wavelengths as shown in Figure 2. 2) Draw a horizontal line N -dB down from the maximum gain point. 3) The two or more intersection points define the gain wa

47、velength band. The minimum difference in N -dB down wavelengths is gain wavelength band. NOTE 2 A value of N = 3 is typically applied. h) Gain wavelength variation: Measure the maximum gain and minimum gain over the specified measurement wavelength range as described in d). The gain variation shall

48、be the difference between the maximum and the minimum gain values. Calculations are processed according to the following procedure. 1) Plot the gain of each wavelength as shown in Figure 4. 2) Find the maximum gain, Gmax-l(dB) within wavelength band. 3) Find the minimum gain, Gmin-l(dB) within wavel

49、ength band. 4) Calculate the gain wavelength variation, Gl(dB) by the following formula: Gl= Gmax-l Gmin-l(dB) 2 BS EN 61290-1:2015IEC 61290-1:2014 IEC 2014 9 Signal gain(dB)Signal wavelength (nm)Gain wavelength variationWavelength bandlminlmaxGmin-lGlGmax-lIECFigure 4 Typical behaviour of the gain as a function of the wavelength i) Gain stability: The maximum degree of gain fluctuation of the maximum and minimum signal gain, for a certain specified te