1、 IEC 62343-5-1 Edition 2.0 2014-11 INTERNATIONAL STANDARD Dynamic modules Part 5-1 Test methods Dynamic gain tilt equalizer Gain tilt settling time measurement IEC 62343-5-1:2014-11(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Geneva, Switzerland All rights reserved.
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11、Gain tilt settling time measurement INTERNATIONAL ELECTROTECHNICAL COMMISSION R ICS 33.180.01; 33.180.99 PRICE CODE ISBN 978-2-8322-1959-1 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colou
12、r inside 2 IEC 62343-5-1:2014 IEC 2014 CONTENTS FOREWORD . 4 1 Scope 6 2 Normative 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 g
13、enerator 9 5.3 O/E converter . 9 5.4 Temperature and humidity chamber 10 5.5 Oscilloscope . 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
14、setting 12 6.1.5 Applying the driving pulse 12 6.1.6 Monitoring and recording the 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
15、 6.2.5 Monitoring and recording the command complete flag 13 6.2.6 Calculation of 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
16、 flag 13 6.3.6 Calculation of the gain tilt settling time 13 7 Details to be specified . 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 IEC 62343-5-1:2014 IEC 2014 3 7.2 Measurement conditions . 14 Annex A (informative) Converg
17、ence criterion . 15 Annex B (informative) Measurement examples. 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
18、 for digital control DGTEs 8 Figure 3 Response waveforms for 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 Fi
19、gure B.2 Where insertion loss change is small 16 Table 1 Categorization of DGTE by the control method . 9 4 IEC 62343-5-1:2014 IEC 2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DYNAMIC MODULES Part 5-1 Test methods Dynamic gain tilt equalizer Gain tilt settling time measurement FOREWORD 1) The In
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29、 reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of
30、the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62343-5-1 has been prepared by subcommittee 86C: Fibre optic systems and active devices, of IEC technical committee 86
31、: Fibre optics. This second edition cancels and replaces the first edition published in 2009. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) change in the title b) changes in performance parameter names.
32、 IEC 62343-5-1:2014 IEC 2014 5 The text of this standard is based on the following documents: CDV Report on voting 86C/1249/CDV 86C/1277/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been d
33、rafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62343 series, published under the general title Dynamic Modules, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date in
34、dicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The col
35、our inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 IEC 62343-5-1:2014 IEC 2014 DYNAMIC MODULES Part 5-1 Test met
36、hods 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 dynamic gain tilt equalizer (DGTE) to change its gain tilt from an arbitrary initial value to a desired target value. 2 Normative refer
37、ences 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 any amendments) applies. I
38、EC 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, definitions, abbreviations and response waveforms 3.1 Terms and definitions For the purposes of this document, the terms and definiti
39、ons given in IEC 62343 and IEC 62343-1-3 and the following apply. 3.1.1 T cconvergence time time to converge from the first hit at the target Y % to the stay within the deviation Y % in the optical power from the output port of DGTE at pre-determined wavelength 3.1.2 T llatency time time between the
40、 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 T pprocessing time time between the application of control command and the change in output optical power by X % of the initial power of DGTE at pre-determined
41、 wavelength 3.1.4 gain tilt settling time (T lor T p ) + T r+ T cIEC 62343-5-1:2014 IEC 2014 7 3.1.5 T rrise time time to change from the initial X % to the target Y % in the optical power from the output port of DGTE at pre-determined wavelength 3.1.6 T ssettling time time to be suppressed from the
42、 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 wavelength 3.2 Abbreviations CPU central processing unit DGTE dynamic gain tilt equalizer DUT device under test LCD liquid crystal display O/E
43、 optical-to-electrical PDL polarization dependent loss TLS tuneable laser source WDM wavelength division multiplexing 3.3 Response waveforms The definitions and symbols defined in 3.1 are shown in Figure 1, Figure 2 and Figure 3. Figure 1 Response waveforms for direct control DGTEs T l 100 % 100 + X
44、 % 100 % 100 - Y % T r T s Control signal Time P o P u 100 + Y % T c Parameters T l : Latency time T r : Rise time T c : Convergence time T s : Settling time P o : Overshoot P u : Undershoot Suppressed within required resolution Gain tilt settling time: T l+T r+T c 100 - X % Optical power (W) Target
45、 power Initial power IEC 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 General information The DGTE is categorized into three control methods as shown in Table 1. The direct control type is driven directly
46、 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 signals. The definition and the measurement method of gain tilt settling time for DGTE are different for the three control types. Table 1
47、 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 the DGTE has temperature dependency, users may need to calibrate the temperature effect. The bottom row in Table 1 indicates the typi
48、cal methods of the correction for temperature dependency (refer to Annex D). T p 100 % 100 + X % 100 % 100 - Y % T r T s Command Time P o P u 100 + Y % T c Parameters T p : Processing time T r : Rise time T c : Convergence time T s : Settling time P o : Overshoot P u : Undershoot Suppressed within r
49、equired resolution Gain tilt settling time: T p+T r+T c 100 - X % Optical power (W) Target power Initial power IEC T l 100 % 100 + X % 100 % 100 - Y % T r T s Control signal Time P o P u 100 + Y % T c Parameters T l: Latency time T r : Rise time T c : Convergence time T s : Settling time P o : Overshoot P u : Undershoot Suppressed within required resolution Gain tilt settling time: T l+T r+T c 100 - X % Optical power (W) Target power Initial power IEC
