EN 62343-5-1-2015 en Dynamic modules - Part 5-1 Test methods - Dynamic gain tilt equalizer - Gain tilt settling time measurement.pdf

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1、BSI Standards PublicationDynamic modulesPart 5-1: Test methods Dynamic gain tilt equalizer Gain tilt settling time measurementBS EN 62343-5-1:2015National forewordThis British Standard is the UK implementation of EN 62343-5-1:2015. It is identical to IEC 62343-5-1:2014. It supersedes BS EN 62343-5-1

2、:2009 which is withdrawn.The UK participation in its preparation was entrusted by TechnicalCommittee GEL/86, Fibre optics, to Subcommittee GEL/86/3, Fibre optic systems and active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 publicatio

3、n does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 85310 4ICS 33.180.01; 33.180.99 Compliance with a British Standard cannot confer im

4、munity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2015. Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62343-5-1:2015E U R O P E A N S T A N D A R D N O R M E E U R O P

5、 E N N E E U R O P I S C H E N O R M E N 6 2 3 4 3 - 5 - 1 March 2015 ICS 33.180.99; 33.180.01 Supersedes EN 62343-5-1:2009 English Version Dynamic modules - Part 5-1: Test methods - Dynamic gain tilt equalizer - Gain tilt settling time measurement (IEC 62343-5-1:2014) To be completed (IEC 62343-5-1

6、:2014) Dynamische Module - Teil 5-1: Prfverfahren - Equalizer zur Kompensation einer dynamischen Verstrkerkennlinie -Messung der Einstellzeit der Verstrkerschrglage (IEC 62343-5-1:2014) This European Standard was approved by CENELEC on 2014-12-30. CENELEC members are bound to comply with the CEN/CEN

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

8、r 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 the CEN-CENELEC Management Centre has the same status as

9、 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lux

10、embourg, 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 Electrotechnique Europisches Komitee fr Elektrotechnische Normung

11、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 62343-5-1:2015 EEN 62343-5-1:2015 - 2 - Foreword The text of document 86C/1249/CDV, future edition 2 of IEC 62343-5

12、-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 62343-5-1:2015. The following dates are fixed: latest date by which the document has to be implemented at national level by publica

13、tion of an identical national standard or by endorsement (dop) 2015-09-30 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-12-30 This document supersedes EN 62343-5-1:2009. This edition of EN includes the following significant technical change

14、s with respect to the previous edition: a) change in the title; b) changes in performance parameter names Attention is drawn to the possibility that some of the 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

15、such patent rights. Endorsement notice The text of the International Standard IEC 62343-5-1:2014 was approved by CENELEC as a European Standard without any modification. BS EN 62343-5-1:2015- 3 - EN 62343-5-1:2015 Annex ZA (normative) Normative references to international publications with their cor

16、responding European publications 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 edition of the referenced document (including

17、 any amendments) applies. NOTE 1 When an International Publication 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. Publica

18、tion Year Title EN/HD Year IEC 62343 - Dynamic modules - General and guidance EN 62343 - IEC 62343-1-3 - Dynamic modules - Part 1-3: Performance standards - Dynamic gain tilt equalizer (non-connectorized) EN 62343-1-3 - BS EN 62343-5-1:2015 2 IEC 62343-5-1:2014 IEC 2014 CONTENTS 1 Scope 6 2 Normativ

19、e references 6 3 Terms, definitions, abbreviations and response waveforms 6 3.1 Terms and definitions 6 3.2 Abbreviations 7 3.3 Response waveforms 7 4 General information . 8 5 Apparatus 9 5.1 Light source 9 5.2 Pulse generator 9 5.3 O/E converter . 9 5.4 Temperature and humidity chamber 10 5.5 Osci

20、lloscope . 10 5.6 Temporary joints . 10 5.7 Control system 10 5.8 Measurement setup 10 6 Procedure 11 6.1 Direct control type . 11 6.1.1 Setup . 11 6.1.2 Preparation 11 6.1.3 Wavelength setting 12 6.1.4 Pulse generator setting 12 6.1.5 Applying the driving pulse 12 6.1.6 Monitoring and recording the

21、 output signal from DGTE under test (DUT) . 12 6.1.7 Calculation of the gain tilt settling time 12 6.2 Digital control type 12 6.2.1 Setup . 12 6.2.2 Preparation 12 6.2.3 Wavelength setting 12 6.2.4 Sending command . 12 6.2.5 Monitoring and recording the command complete flag 13 6.2.6 Calculation of

22、 the gain tilt settling time 13 6.3 Analogue control type . 13 6.3.1 Setup . 13 6.3.2 Preparation 13 6.3.3 Wavelength setting 13 6.3.4 Applying the control signal . 13 6.3.5 Monitoring and recording the command complete flag 13 6.3.6 Calculation of the gain tilt settling time 13 7 Details to be spec

23、ified . 13 7.1 Apparatus . 13 7.1.1 Light source . 13 7.1.2 Pulse generator . 14 7.1.3 O/E converter 14 7.1.4 Control system 14 BS EN 62343-5-1:2015IEC 62343-5-1:2014 IEC 2014 3 7.2 Measurement conditions . 14 Annex A (informative) Convergence criterion . 15 Annex B (informative) Measurement example

24、s. 16 Annex C (informative) Gain tilt settling time for specific DGTEs . 17 Annex D (informative) Necessity for the correction for temperature dependency 18 Figure 1 Response waveforms for direct control DGTEs 7 Figure 2 Response waveforms for digital control DGTEs 8 Figure 3 Response waveforms for

25、analogue control DGTEs . 8 Figure 4 Measurement setup for direct control . 10 Figure 5 Measurement setup for digital control . 11 Figure 6 Measurement setup for analogue control 11 Figure B.1 Where insertion loss change is sufficient 16 Figure B.2 Where insertion loss change is small 16 Table 1 Cate

26、gorization of DGTE by the control method . 9 BS EN 62343-5-1:2015 6 IEC 62343-5-1:2014 IEC 2014 DYNAMIC MODULES Part 5-1 Test methods Dynamic gain tilt equalizer Gain tilt settling time measurement 1 Scope This part of IEC 62343 contains the measurement method of gain tilt settling time for a dynami

27、c gain tilt equalizer (DGTE) to change its gain tilt from an arbitrary initial value to a desired target value. 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 e

28、dition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62343, Dynamic modules General and guidance IEC 62343-1-3, Dynamic modules Part 1-3: Performance standards Dynamic gain tilt equalizer (non-connectorized) 3 Terms, defi

29、nitions, abbreviations and response waveforms 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 62343 and IEC 62343-1-3 and the following apply. 3.1.1 Tcconvergence time time to converge from the first hit at the target Y % to the stay within the dev

30、iation Y % in the optical power from the output port of DGTE at pre-determined wavelength 3.1.2 Tllatency time time between the application of control signal and the change in output optical power by X % of the initial power of DGTE at pre-determined wavelength 3.1.3 Tpprocessing time time between t

31、he application of control command and the change in output optical power by X % of the initial power of DGTE at pre-determined wavelength 3.1.4 gain tilt settling time (Tlor Tp) + Tr+ TcBS EN 62343-5-1:2015IEC 62343-5-1:2014 IEC 2014 7 3.1.5 Trrise time time to change from the initial X % to the tar

32、get Y % in the optical power from the output port of DGTE at pre-determined wavelength 3.1.6 Tssettling time time to be suppressed from the first hit at the target Y % to the final stay at the target within a required resolution of the optical power from the output port of DGTE at pre-determined wav

33、elength 3.2 Abbreviations CPU central processing unit DGTE dynamic gain tilt equalizer DUT device under test LCD liquid crystal display O/E optical-to-electrical PDL polarization dependent loss TLS tuneable laser source WDM wavelength division multiplexing 3.3 Response waveforms The definitions and

34、symbols defined in 3.1 are shown in Figure 1, Figure 2 and Figure 3. Figure 1 Response waveforms for direct control DGTEs Tl100 % 100 + X % 100 % 100 - Y % TrTsControl signal Time PoPu100 + Y % TcParameters Tl: Latency time Tr: Rise time Tc: Convergence time Ts: Settling time Po: Overshoot Pu: Under

35、shoot Suppressed within required resolution Gain tilt settling time: Tl+Tr+Tc100 - X % Optical power (W) Target power Initial power IEC BS EN 62343-5-1:2015 8 IEC 62343-5-1:2014 IEC 2014 Figure 2 Response waveforms for digital control DGTEs Figure 3 Response waveforms for analogue control DGTEs 4 Ge

36、neral information The DGTE is categorized into three control methods as shown in Table 1. The direct control type is driven directly by voltage or current; the digital control type is operated by digital control system with digital signals; and the analogue control type is operated by analogue signa

37、ls. The definition and the measurement method of gain tilt settling time for DGTE are different for the three control types. Table 1 also shows the configuration of operating systems and the correction for temperature dependency for three control types of DGTE. When the gain tilt settling time for t

38、he DGTE has temperature dependency, users may need to calibrate the temperature effect. The bottom row in Table 1 indicates the typical methods of the correction for temperature dependency (refer to Annex D). Tp100 % 100 + X % 100 % 100 - Y % TrTsCommand Time PoPu100 + Y % TcParameters Tp: Processin

39、g time Tr: Rise time Tc: Convergence time Ts: Settling time Po: Overshoot Pu: Undershoot Suppressed within required resolution Gain tilt settling time: Tp+Tr+Tc100 - X % Optical power (W) Target power Initial power IEC Tl100 % 100 + X % 100 % 100 - Y % TrTsControl signal Time PoPu100 + Y % TcParamet

40、ers Tl: Latency time Tr: Rise time Tc: Convergence time Ts: Settling time Po: Overshoot Pu: Undershoot Suppressed within required resolution Gain tilt settling time: Tl+Tr+Tc100 - X % Optical power (W) Target power Initial power IEC BS EN 62343-5-1:2015IEC 62343-5-1:2014 IEC 2014 9 Table 1 Categoriz

41、ation of DGTE by the control method Direct control Digital control Analogue control Control By voltage or current directly By command through digital circuit By voltage or current through analogue circuit Configurations Correction for temperature dependency By control system By digital circuit or co

42、ntrol system By analogue circuit or control system 5 Apparatus 5.1 Light source A tuneable wavelength device is used as the light source. A tuneable laser source (TLS) or a combination of a broadband light source and tuneable filter is the typical equipment of tuneable wavelength light source. The t

43、uning range of the tuneable wavelength light source shall be enough to cover the operating wavelength of DGTE to be measured. In order to minimise the measurement uncertainty caused by the linewidth of the light source, the linewidth multiplied by the maximum value of the gain tilt slope of DGTE sha

44、ll be smaller than one tenth of the dynamic gain tilt range. Typical value of operating wavelength range and dynamic gain tilt range of DGTE are 35 nm and 4 dB respectively. For example, the error for the linewidth of 1 nm is calculated as: %4,1)4(435/41 =+ (1) The output power of the light source s

45、hall remain stable during the measurement. The stability of the output power during the gain tilt settling time of DGTE to be measured shall be smaller than one tenth of dynamic gain tilt range of DGTE. If the polarization dependent loss (PDL) of DGTE to be measured is larger than 0,5 dB, a depolari

46、zed light source shall be used. 5.2 Pulse generator A pulse generator is used to drive DGTE to be measured. The shape of the pulse shall be rectangular to change the gain tilt. The intensity and width of the pulse shall be such to make the maximum tilt change defined as the specification of DGTE. Th

47、e rise time/fall time of the rectangular pulse shall be shorter than 10 ns or one tenth of the rise time/fall time to be measured. 5.3 O/E converter An O/E converter is used to convert the optical output power of DGTE to be measured to the electrical power to be observed by an oscilloscope. The band

48、width of O/E converter shall be from DC to greater than 10(1/Tr) Hz, where Tris the rise time to be measured. DGTE V/I applied Control system DGTE w/digital circuit Control system Command (Rs232c, I2C, etc.) Control system DGTE w/analogue circuit V/I control (ex.0+5V) BS EN 62343-5-1:2015 10 IEC 623

49、43-5-1:2014 IEC 2014 The maximum power input to the O/E converter before compression shall be 10 times more than the optical power to be measured. 5.4 Temperature and humidity chamber The test setup shall include an environmental chamber capable of producing and maintaining the specified temperature and/or humidity. 5.5 Oscilloscope The oscilloscope shall have a storage function and sufficient bandwidth and accuracy. It shall have at least two traces.