IEC PAS 62074-1:2007

IEC/PAS 62074-1
Edition 1.0 2007-09
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
Fibre optic WDM devices –
Part 1: Generic specification
IEC/PAS 62074-1:2007(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.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: 0Hinmail@iec.ch
Web: 1Hwww.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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: 2Hwww.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It also gives information on projects, withdrawn and replaced publications.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: 3Hwww.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: 4Hwww.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: 5Hwww.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: 6Hcsc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC/PAS 62074-1
Edition 1.0 2007-09
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
Fibre optic WDM devices –
Part 1: Generic specification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
W
ICS 33.180.01; 33.180.20 ISBN 2-8318-9283-X

– 2 – PAS 62074-1 © IEC:2007(E)

CONTENTS
FOREWORD.0H0H4

1 Scope.1H1H5

2 Normative references.2H2H5

3 Terms and definitions .3H3H6

3.1 Basic term definitions .4H4H6

3.2 Component definitions .5H5H9

3.3 Performance parameter definitions .6H6H10
4 Requirements .7H7H23
4.1 Classification.8H8H23
4.1.1 Type .9H9H23
4.1.2 Style .10H10H23
4.1.3 Variant.11H11H24
4.1.4 Assessment level.12H12H24
4.2 Documentation .13H13H25
4.2.1 Symbols.14H14H25
4.2.2 Specification system .15H15H25
4.2.3 Drawings .16H16H26
4.2.4 Measurements .17H17H27
4.2.5 Test data sheets .18H18H27
4.2.6 Instructions for use .19H19H27
4.3 Standardization system.20H20H27
4.3.1 Performance standards.21H21H27
4.3.2 Reliability standard .22H22H28
4.3.3 Interlinking.23H23H28
4.4 Design and construction .24H24H29
4.4.1 Materials.25H25H29
4.4.2 Workmanship .26H26H29
4.5 Quality.27H27H30
4.6 Performance requirements.28H28H30
4.7 Identification and marking.29H29H30
4.7.1 Variant identification number.30H30H30

4.7.2 Component marking.31H31H30
4.7.3 Package marking .32H32H30
4.8 Safety.33H33H31

Annex A (informative) Examples of fibre optic WDM device types .34H34H32
Bibliography .35H35H36

36H36H6
Figure 1 – Example of a six-port device, with two-input and four-output ports.
Figure 2 – Illustration of transfer matrix coefficient.37H37H8
Figure 3 – Example of a six-port device, with two-input and four-output ports.38H38H9
Figure 4 – Illustration of adjacent channel isolation.39H39H11
Figure 5 – Illustration of a four-wavelength bidirectional system .40H40H12
Figure 6 – Illustration of channel insertion loss variation .41H41H13

PAS 62074-1 © IEC:2007(E) – 3 –

Figure 7 – Illustration of free spectral range.42H42H14

Figure 8 – Illustration of insertion loss .43H43H15

Figure 9 – Illustration of minimum and maximum insertion loss.44H44H15

Figure 10 – Illustration of isolation wavelength.45H45H16

Figure 11 – Illustration of isolation wavelength range .46H46H16

Figure 12 – Illustration of maximum adjacent channel isolation .47H47H17

Figure 13 – Illustration of non-adjacent channel isolation .48H48H18

Figure 14 – Illustration of operating wavelength .49H49H18

Figure 15 – Illustration of operating wavelength range .50H50H19
Figure 16 – Illustration of polarization dependent centre wavelength (PDCW) .51H51H19
Figure 17a – At the band edges.52H52H21
Figure 17b – In-band.53H53H21
Figure 17 – Illustration of ripple .54H54H21
Figure 18 – Illustration of X-dB bandwidth.55H55H22
Figure 19 – Wavelength-selective branching device.56H56H23
Figure 20 – Wavelength-selective branching device.57H57H24
Figure 21 – Wavelength-selective branching device.58H58H24
Figure 22 – Wavelength-selective branching device.59H59H24
Figure A.1 – Example of a wavelength multiplexer .60H60H32
Figure A.2 – Example of a wavelength demultiplexer .61H61H33
Figure A.3 – Example of a wavelength multiplexer/demultiplexer.62H62H33
Figure A.4 – Example of a wavelength router.63H63H34
Figure A.5 – Example of wavelength channel add/drop .64H64H35

Table 1 – Three-level IEC specification structure .65H65H26
Table 2 – Standards interlink matrix .66H66H29
Table 3 – Quality assurance options .67H67H29

– 4 – PAS 62074-1 © IEC:2007(E)

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
FIBRE OPTIC WDM DEVICES –
Part 1: Generic specification
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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.
A PAS is a technical specification not fulf
...