IEC 61978-1:2024
(Main)Fibre optic interconnecting devices and passive components - Fibre optic passive chromatic dispersion compensators - Part 1: Generic specification
Fibre optic interconnecting devices and passive components - Fibre optic passive chromatic dispersion compensators - Part 1: Generic specification
IEC 61978-1:2024 is available as IEC 61978-1:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61978-1:2024 applies to fibre optic passive chromatic dispersion compensators, all exhibiting the following features:
- they are optically passive;
- they have an optical input and an optical output for transmitting optical power;
- the ports are optical fibres or optical fibre connectors;
- they are wavelength sensitive;
- they can be polarization sensitive.
This document establishes uniform requirements for the passive chromatic dispersion compensator. This fourth edition cancels and replaces the third edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) harmonization of terms and definitions with IEC TS 62627-09;
b) change of Clause 4 regarding requirements.
Dispositifs d'interconnexion et composants passifs fibroniques - Compensateurs de dispersion chromatique passifs fibroniques - Partie 1 : Spécification générique
IEC 61978-1:2024 est disponible sous forme de IEC 61978-1:2024 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 61978-1:2024 s’applique aux compensateurs de dispersion chromatique passifs fibroniques qui présentent les caractéristiques suivantes:
- ils sont passifs au niveau optique;
- ils possèdent une entrée optique et une sortie optique pour la transmission de la puissance optique;
- les ports sont des fibres optiques ou des connecteurs optiques;
- ils sont sensibles aux longueurs d’onde;
- i ls peuvent être sensibles à la polarisation.
Le présent document établit des exigences uniformes pour les compensateurs de dispersion chromatique passifs. Cette quatrième édition annule et remplace la troisième édition parue en 2014. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) harmonisation des termes et définitions avec l’IEC TS 62627-09;
b) modification de l’Article 4 concernant les exigences.
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IEC 61978-1 ®
Edition 4.0 2024-04
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic
passive chromatic dispersion compensators –
Part 1: Generic specification
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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International Standards for all electrical, electronic and related technologies.
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IEC 61978-1 ®
Edition 4.0 2024-04
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic
passive chromatic dispersion compensators –
Part 1: Generic specification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.01 ISBN 978-2-8322-8788-0
– 2 – IEC 61978-1:2024 RLV © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
3.1 Component terms. 7
3.2 Performance parameter terms . 8
4 Requirements . 11
4.1 Classification . 11
4.1.1 General . 13
4.1.2 Technology . 14
4.1.3 Types . 14
4.1.4 Wavelength band . 14
4.1.5 Application of PDCSs and their suitable technologies . 14
4.1.6 Interface style . 14
4.2 Documentation . 15
4.2.1 Symbols . 15
4.3.2 Specification system .
4.2.2 Drawings . 16
4.2.3 Tests and measurements . 16
4.2.4 Test data sheets report . 17
4.2.5 Instructions for use . 17
4.3 Standardisation system . 17
4.3.1 Interface standards . 17
4.3.2 Performance standards . 17
4.3.3 Reliability standards . 18
4.4.3 Interlinking .
4.4 Design and construction . 20
4.4.1 Materials . 20
4.4.2 Workmanship . 20
4.5 Quality . 20
4.6 Performance requirements . 20
4.7 Identification and marking . 21
4.7.1 General . 21
4.7.2 Variant identification number .
4.7.2 Component marking . 21
4.7.3 Package marking . 21
4.8 Packaging . 22
4.9 Storage conditions . 22
4.10 Safety . 22
Annex A (informative) Example of dispersion compensating fibre (DCF) technologies . 23
Annex B (informative) Example of fibre Bragg grating (FBG) technologies . 25
Annex C (informative) Example of virtually imaged phased array (VIPA) technologies . 27
Annex D (informative) Example of GT etalon technologies . 29
Annex E (informative) Technology dependent characteristics of PCDCs . 30
Annex F (informative) Example of interface style . 31
Bibliography . 32
Figure 1 – Standards currently under preparation .
Figure A.1 – Chromatic dispersion in a standard single-mode optical fibre (SMF) . 23
Figure A.2 – Calculated contour for different dispersion at the wavelength of 1,55 µm
[CD(λ:1,55 µm)] for a step index core fibre . 24
Figure A.3 – Examples of refractive index profile used in DCF . 24
Figure B.1 – Illustration of the use of a chirped fibre Bragg grating for chromatic
dispersion compensation . 25
Figure B.2 – Expanded view over 10 nm of the insertion loss (attenuation) spectrum of
a multi-channel FBG . 26
Figure C.1 – Structure of virtually imaged phased array (VIPA) . 27
Figure C.2 – Detailed light path and mechanism of generating chromatic dispersion . 28
Figure D.1 – Gires-Tournois etalon . 29
Figure F.1 – Examples of interface style for fibre optic PCDCs . 31
Table 1 – Example of a typical fibre optic PDCS classification . 13
Table 2 – Three-level IEC specification structure .
Table 2 – Application, channel numbers, passband and technologies of PDCSs . 14
Table 3 – Standards interlink matrix .
Table 4 – Quality assurance options .
Table E.1 – Summary of technology dependent characteristics of PCDCs . 30
– 4 – IEC 61978-1:2024 RLV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS – FIBRE OPTIC PASSIVE
CHROMATIC DISPERSION COMPENSATORS –
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.
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...
IEC 61978-1 ®
Edition 4.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
passive chromatic dispersion compensators –
Part 1: Generic specification
Dispositifs d'interconnexion et composants passifs fibroniques –
Compensateurs de dispersion chromatique passifs fibroniques –
Partie 1 : Spécification générique
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
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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 corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.
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containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.
Also known as the International Electrotechnical Vocabulary
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(IEV) online.
If you wish to give us your feedback on this publication or need
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IEC 61978-1 ®
Edition 4.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Fibre optic
passive chromatic dispersion compensators –
Part 1: Generic specification
Dispositifs d'interconnexion et composants passifs fibroniques –
Compensateurs de dispersion chromatique passifs fibroniques –
Partie 1 : Spécification générique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.01 ISBN 978-2-8322-8702-6
– 2 – IEC 61978-1:2024 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
3.1 Component terms. 7
3.2 Performance terms . 8
4 Requirements . 10
4.1 Classification . 10
4.1.1 General . 10
4.1.2 Technology . 11
4.1.3 Types . 11
4.1.4 Wavelength band . 11
4.1.5 Application of PDCSs and their suitable technologies . 11
4.1.6 Interface style . 12
4.2 Documentation . 12
4.2.1 Symbols . 12
4.2.2 Drawings . 12
4.2.3 Tests and measurements . 12
4.2.4 Test report . 13
4.2.5 Instructions for use . 13
4.3 Standardisation system . 13
4.3.1 Interface standards . 13
4.3.2 Performance standards . 13
4.3.3 Reliability standards . 13
4.4 Design and construction . 14
4.4.1 Materials . 14
4.4.2 Workmanship . 14
4.5 Quality . 14
4.6 Performance requirements . 14
4.7 Identification and marking . 14
4.7.1 General . 14
4.7.2 Component marking . 14
4.7.3 Package marking . 15
4.8 Packaging . 15
4.9 Storage conditions . 15
4.10 Safety . 15
Annex A (informative) Example of dispersion compensating fibre (DCF) technologies . 16
Annex B (informative) Example of fibre Bragg grating (FBG) technologies . 18
Annex C (informative) Example of virtually imaged phased array (VIPA) technologies . 20
Annex D (informative) Example of GT etalon technologies . 22
Annex E (informative) Technology dependent characteristics of PCDCs . 23
Annex F (informative) Example of interface style . 24
Bibliography . 25
Figure A.1 – Chromatic dispersion in a standard single-mode optical fibre (SMF) . 16
Figure A.2 – Calculated contour for different dispersion at the wavelength of 1,55 µm
[CD(λ:1,55 µm)] for a step index core fibre . 17
Figure A.3 – Examples of refractive index profile used in DCF . 17
Figure B.1 – Illustration of the use of a chirped fibre Bragg grating for chromatic
dispersion compensation . 18
Figure B.2 – Expanded view over 10 nm of the insertion loss (attenuation) spectrum of
a multi-channel FBG . 19
Figure C.1 – Structure of virtually imaged phased array (VIPA) . 20
Figure C.2 – Detailed light path and mechanism of generating chromatic dispersion . 21
Figure D.1 – Gires-Tournois etalon . 22
Figure F.1 – Examples of interface style for fibre optic PCDCs . 24
Table 1 – Example of a typical fibre optic PDCS classification . 11
Table 2 – Application, channel numbers, passband and technologies of PDCSs . 12
Table E.1 – Summary of technology dependent characteristics of PCDCs . 23
– 4 – IEC 61978-1:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS – FIBRE OPTIC PASSIVE
CHROMATIC DISPERSION COMPENSATORS –
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 reco
...
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