IEC TR 62343-6-3:2010

IEC/TR 62343-6-3 ®
Edition 1.0 2010-05
TECHNICAL
REPORT
colour
inside
Dynamic modules –
Part 6-3: Round robin measurement results for group delay ripple of tunable
dispersion compensators
IEC/TR 62343-6-3:2010(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC/TR 62343-6-3 ®
Edition 1.0 2010-05
TECHNICAL
REPORT
colour
inside
Dynamic modules –
Part 6-3: Round robin measurement results for group delay ripple of tunable
dispersion compensators
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 33.180 ISBN 978-2-88910-992-0
– 2 – TR 62343-6-3 © IEC:2010(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Abbreviated terms .7
4 Types of tunable dispersion compensators (TDCs) .8
4.1 Virtual imaged phased array (VIPA).8
4.2 Fibre Bragg grating (FBG) .8
4.3 Planar lightwave circuit (PLC) .8
4.4 Etalon .9
5 Measurement methods .9
5.1 Modulation phase shift (MPS) method .9
5.2 Modulation phase shift-Mueller matrix (MPS-Mueller) method.10
5.3 Polarization phase shift (PPS) method .10
5.4 Swept wavelength interferometry (SWI) method .10
6 DUTs and test parameters.10
7 Measurement results .11
7.1 VIPA.11
7.2 FBG .14
7.3 PLC.16
7.4 Etalon .19
8 Data analysis.21
8.1 Repeatability .21
8.2 Measurement method differences.22
9 Consideration of phase ripple .24
10 Conclusion .27

Figure 1 – Structure of the VIPA .8
Figure 2 – Chirped fibre grating .8
Figure 3 – PLC (MZ interference circuit) .9
Figure 4 – Etalon (Gires-Tournois interferometer) .9
Figure 5 – GD and IL of the VIPA.12
Figure 6 – GD deviation with each measurement method of the VIPA .12
Figure 7 – GD deviation at different RBWs of the VIPA .13
Figure 8 – Summary of GDR measurement results of the VIPA .13
Figure 9 – Summary of GDR repeatability of the VIPA .14
Figure 10 – GD and IL of FBG1.14
Figure 11 – GD deviation with each measurement method of FBG1 .15
Figure 12 – GD deviation at different RBWs of FBG1 .15
Figure 13 – Summary of GDR measurement results of the FBGs .16
Figure 14 – Summary of GDR repeatability of the FBGs.16
Figure 15 – GD and IL of the PLC .17
Figure 16 – GD deviation of the PLC with different measurement methods .17

TR 62343-6-3 © IEC:2010(E) – 3 –
Figure 17 – GD deviation of the PLC at different RBWs .18
Figure 18 – Summary of GDR measurement results of the PLC .18
Figure 19 – Summary of GDR repeatability of the PLC.19
Figure 20 – GD and IL of the etalon .19
Figure 21 – GD deviation of the etalon with different measurement methods.20
Figure 22 – GD deviation of the etalon at different RBWs .20
Figure 23 – Summary of GDR measurement results of the etalon .21
Figure 24 – Summary of GDR repeatability of the etalon.21
Figure 25 – RBW, measurement methods and GDR repeatability.22
Figure 26 – Differences in GDR measurement results between measurement methods.23
Figure 27 – GDR differences produced when measuring a TDC with GDR of less than
6 ps at RBW of 8 pm.23
Figure 28 – Typical measurement result of GDR .24
Figure 29 – Phase ripple calculated from GDR.25
Figure 30 – Amplitude, period, and EOP of GDR.25
Figure 31 – Phase ripple of the VIPA and FBGs.26
Figure 32 – Phase ripple repeatability of the VIPA and FBGs.26
Figure 33 – Differences in phase ripple between measurement methods .27

Table 1 – DUTs and measurement methods used in round robin testing .10
Table 2 – RBW and modulation frequency .11

– 4 – TR 62343-6-3 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DYNAMIC MODULES –
Part 6-3: Round robin measurement results
for group delay ripple of tunable dispersion compensators

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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 activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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 participate in this preparation. 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 IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or 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 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.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 62343-6-3, which is a technical report, has been prepared by subcommittee 86C: Fibre
optic systems and active devices, of IEC technical committee 86: Fibre optics.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
86C/917/DTR 86C/952/RVC
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above tab
...