IEC-PAS-61280-2-10-2003.pdf
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1、 PRE-STANDARD Fibre optic communication subsystem test procedures Part 2-10: Digital systems Time-resolved chirp and alpha-factor measurement of laser transmitters P U B L I C L Y A V A I L A B L E S P E C I F I C A T I O N IEC/PAS 61280-2-10 Edition 1.0 2003-01 I N T E R N A T I O N A L E L E C T R
2、 O T E C H N I C A L C O M M I S S I O N Reference number IEC/PAS 61280-2-10 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/06/2007 09:53:47 MSTNo reproduction or networking permitt
3、ed without license from IHS -,-,- Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/06/2007 09:53:47 MSTNo reproduction or networking permitted without license from IHS -,-,- PRE-STAND
4、ARD Fibre optic communication subsystem test procedures Part 2-10: Digital systems Time-resolved chirp and alpha-factor measurement of laser transmitters P U B L I C L Y A V A I L A B L E S P E C I F I C A T I O N IEC/PAS 61280-2-10 Edition 1.0 2003-01 I N T E R N A T I O N A L E L E C T R O T E C H
5、 N I C A L C O M M I S S I O N Reference number IEC/PAS 61280-2-10 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/06/2007 09:53:47 MSTNo reproduction or networking permitted without
6、 license from IHS -,-,- 2 Copyright 2003, IEC CONTENTS FOREWORD.3 1 Scope.4 2 Background 4 3 Definition of time-resolved chirp .4 4 Modeling transmitter behaviour.5 5 Overview of chirp measurement methods .6 6 Frequency discriminator method.9 6.1 Apparatus9 6.1.1 Pattern Generator9 6.1.2 EDFA 9 6.1.
7、3 Polarization controller9 6.1.4 Interferometer10 6.1.5 Optical oscilloscope.10 6.2 Procedure .10 7 Monochromator method11 7.1 Apparatus11 7.1.1 Pattern generator 11 7.1.2 EDFA 11 7.1.3 Monochromator .11 7.1.4 Optical oscilloscope.11 7.2 Procedure .11 8 Alpha-factor calculations 12 8.1 Alpha factor
8、vs. time, (t)12 8.2 Average alpha factor, avg.13 8.3 Alpha factor vs. power, (P) 13 9 Documentation .14 10 Abbreviations .14 Annex A Verification of TRC setup and calculations15 Annex B Optical transmitter modulation methods .16 B.1 Directly modulated laser16 B.2 Electro-absorption modulator.17 B.3
9、Mach-Zehnder modulator.18 BIBLIOGRAPHY .20 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/06/2007 09:53:47 MSTNo reproduction or networking permitted without license from IHS -,-,-
10、Copyright 2003, IEC 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIBRE OPTIC COMMUNICATION SUBSYSTEM TEST PROCEDURES Part 2-10: Digital systems Time-resolved chirp and alpha-factor measurement of laser transmitters FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organ
11、ization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activiti
12、es, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also p
13、articipate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as
14、possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical s
15、pecifications, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regio
16、nal standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity wit
17、h one of its standards. 6) The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed that compliance with this document may involve the use of a patent concerning the double-pass monochromator described in clauses 2.4 and 4.1. IEC takes no position concerning
18、 the evidence, validity and scope of this patent right. The holders of this patent right has assured the IEC that they are willing to negotiate licenses under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holder of
19、this patent right is registered with the IEC. Information may be obtained from: Agilent Technologies Palo Alto CA USA A PAS is a technical specification not fulfilling the requirements for a standard, but made available to the public. IEC-PAS 61280-2-10 has been prepared by subcommittee 86C: Fibre o
20、ptic systems and active devices, of IEC technical committee 86: Fibre optics The text of this PAS is based on the following document: This PAS was approved for publication by the P-members of the committee concerned as indicated in the following document: Draft PAS Report on voting 86C/475A/PAS 86C/
21、496/RVD Following publication of this PAS, the technical committee or subcommittee concerned will investigate the possibility of transforming the PAS into an International Standard. This PAS shall remain valid for an initial maximum period of 3 years starting from 2002-08. The validity may be extend
22、ed for a single 3-year period, following which it shall be revised to become another type of normative document, or shall be withdrawn. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 0
23、3/06/2007 09:53:47 MSTNo reproduction or networking permitted without license from IHS -,-,- 4 Copyright 2003, IEC FIBRE OPTIC COMMUNICATION SUBSYSTEM TEST PROCEDURES Part 2-10: Digital systems Time-resolved chirp and alpha-factor measurement of laser transmitters 1 Scope This part of IEC 61280 sets
24、 forth standard procedures for measuring time-resolved chirp on laser transmitters. The calculation of alpha-factor, a measure of transient chirp, is derived from the measured TRC data. Also covered is a means to verify the TRC setups and calculations (Annex A) and a review of laser modulation metho
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