IEC 61978-1:2014

Fibre optic interconnecting devices and passive components - Fibre optic passive chromatic dispersion compensators - Part 1: Generic specification

IEC 61978-1:2014 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 may be polarization sensitive. This standard establishes uniform requirements for the passive chromatic dispersion compensator. This third edition cancels and replaces the second edition, published in 2009, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- introduction of new terms and definitions;
- revision of classifications;
- addition of Annex E. Keywords: fibre optic passive chromatic dispersion compensators

Dispositifs d'interconnexion et composants passifs à fibres optiques - Compensateurs de dispersion chromatique passifs à fibres optiques - Partie 1: Spécification générique

IEC 61978-1:2014 s'applique aux compensateurs de dispersion chromatique passifs à fibres optiques présentant 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 de fibres optiques;
- ils sont sensibles aux longueurs d'onde;
- ils peuvent être sensibles à la polarisation. La présente norme établit des exigences uniformes pour les compensateurs de dispersion chromatique passifs. La présente troisième édition annule et remplace la deuxième édition publiée en 2009, dont elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- introduction de nouveaux termes et définitions;
- révision des classifications;
- ajout de l'Annexe E. Mots clés: compensateurs de dispersion chromatique passifs à fibres optiques

General Information

• Status: Published
• Publication Date: 22-May-2014
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Drafting Committee: WG 7 - TC 86/SC 86B/WG 7

Relations

• Revises: IEC 61978-1:2009 - Fibre optic interconnecting devices and passive components - Fibre optic passive chromatic dispersion compensators - Part 1: Generic specification
• Effective Date: 05-Sep-2023
• Revised: IEC 61978-1:2024 - Fibre optic interconnecting devices and passive components - Fibre optic passive chromatic dispersion compensators - Part 1: Generic specification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61978-1 ®
Edition 3.0 2014-05
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

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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IEC 61978-1 ®
Edition 3.0 2014-05
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic

passive chromatic dispersion compensators –

Part 1: Generic specification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 33.180.01 ISBN 978-2-8322-1583-8

– 2 – IEC 61978-1:2014 © IEC 2014

CONTENTS
FOREWORD . 4

1 Scope . 6

2 Normative references . 6

3 Terms and definitions . 7

3.1 Basic terms . 7

3.2 Component terms . 7

3.3 Performance parameter . 8
4 Requirements . 10
4.1 General . 10
4.2 Classification . 10
4.2.1 General . 10
4.2.2 Type . 10
4.2.3 Style . 11
4.2.4 Variant . 12
4.2.5 Normative reference extensions . 12
4.3 Documentation . 13
4.3.1 Symbols . 13
4.3.2 Specification system . 13
4.3.3 Drawings . 14
4.3.4 Tests and measurements . 15
4.3.5 Test data sheets . 15
4.3.6 Instructions for use . 15
4.4 Standardization system . 15
4.4.1 Performance standards . 15
4.4.2 Reliability standards . 16
4.4.3 Interlinking . 16
4.5 Design and construction. 18
4.5.1 Materials . 18
4.5.2 Workmanship . 18
4.6 Performance . 18
4.7 Identification and marking . 18
4.7.1 General . 18

4.7.2 Variant identification number . 18
4.7.3 Component marking . 19
4.7.4 Package marking . 19
4.8 Packaging . 19
4.9 Storage conditions . 20
4.10 Safety . 20
Annex A (informative) Example of dispersion compensating fibre (DCF) technologies . 21
Annex B (informative) Example of fibre Bragg grating (FBG) technologies . 23
Annex C (informative) Example of virtually imaged phased array (VIPA) technologies . 25
Annex D (informative) Example of GT etalon technologies . 27
Annex E (informative) Technology dependent characteristics of PCDCs . 28
Bibliography . 29

Figure 1 – Standards currently under preparation . 17

Figure A.1 – Chromatic dispersion in a standard single-mode optical fibre (SMF) . 21

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 . 22

Figure A.3 – Examples of refractive index profile used in DCF . 22

Figure B.1 – Illustration of the use of a chirped fibre Bragg grating for chromatic

dispersion compensation . 23

Figure B.2 – Expanded view over 10 nm of the insertion loss spectrum of a multi-
channel FBG . 24

Figure C.1 – Structure of virtually imaged phased array (VIPA) . 25
Figure C.2 – Detailed light path and mechanism of generating chromatic dispersion . 26
Figure D.1 – Gires-Tournois etalon . 27

Table 1 – Types of passive chromatic dispersion compensators . 11
Table 2 – Three-level IEC specification structure . 13
Table 3 – Standards interlink matrix . 17
Table 4 – Quality assurance options . 18
Table E.1 – Summary of technology dependent characteristics of PCDCs . 28

– 4 – IEC 61978-1:2014 © IEC 2014

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
FIBRE OPTIC INTERCONNECTING DEVICES

AND PASSIVE COMPONENTS – FIBRE OPTIC PASSIVE

CHROMATIC DISPERSION COMPENSATORS –

Part 1: Generic specification
FOREWORD
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International Standard IEC 61978-1 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and pass
...

IEC 61978-1 ®
Edition 3.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic
passive chromatic dispersion compensators –
Part 1: Generic specification
Dispositifs d’interconnexion et composants passifs à fibres optiques –
Compensateurs de dispersion chromatique passifs à fibres optiques –
Partie 1: Spécification générique
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.

About IEC publications
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IEC 61978-1 ®
Edition 3.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic

passive chromatic dispersion compensators –

Part 1: Generic specification
Dispositifs d’interconnexion et composants passifs à fibres optiques –

Compensateurs de dispersion chromatique passifs à fibres optiques –

Partie 1: Spécification générique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.01 ISBN 978-2-8322-3086-2

– 2 – IEC 61978-1:2014 © IEC 2014
CONTENTS
CONTENTS . 2
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
3.1 Basic terms . 7
3.2 Component terms . 7
3.3 Performance parameter . 8
4 Requirements . 10
4.1 General . 10
4.2 Classification . 10
4.2.1 General . 10
4.2.2 Type . 11
4.2.3 Style . 11
4.2.4 Variant . 12
4.2.5 Normative reference extensions . 12
4.3 Documentation . 13
4.3.1 Symbols . 13
4.3.2 Specification system . 13
4.3.3 Drawings . 14
4.3.4 Tests and measurements . 15
4.3.5 Test data sheets . 15
4.3.6 Instructions for use . 15
4.4 Standardization system . 15
4.4.1 Performance standards . 15
4.4.2 Reliability standards . 16
4.4.3 Interlinking . 16
4.5 Design and construction. 18
4.5.1 Materials . 18
4.5.2 Workmanship . 18
4.6 Performance . 18
4.7 Identification and marking . 18
4.7.1 General . 18
4.7.2 Variant identification number . 18
4.7.3 Component marking . 19
4.7.4 Package marking . 19
4.8 Packaging . 19
4.9 Storage conditions . 20
4.10 Safety . 20
Annex A (informative) Example of dispersion compensating fibre (DCF) technologies . 21
Annex B (informative) Example of fibre Bragg grating (FBG) technologies . 23
Annex C (informative) Example of virtually imaged phased array (VIPA) technologies . 25
Annex D (informative) Example of GT etalon technologies . 27
Annex E (informative) Technology dependent characteristics of PCDCs . 28
Bibliography . 29

Figure 1 – Standards currently under preparation . 17
Figure A.1 – Chromatic dispersion in a standard single-mode optical fibre (SMF) . 21
Figure A.2 – Calculated contour for different dispersion at the wavelength of 1,55 mm
(CD(λ:1,55 mm)) for a step index core fibre . 22
Figure A.3 – Examples of refractive index profile used in DCF . 22
Figure B.1 – Illustration of the use of a chirped fibre Bragg grating for chromatic
dispersion compensation . 23
Figure B.2 – Expanded view over 10 nm of the insertion loss spectrum of a multi-
channel FBG . 24
Figure C.1 – Structure of virtually imaged phased array (VIPA) . 25
Figure C.2 – Detailed light path and mechanism of generating chromatic dispersion . 26
Figure D.1 – Gires-Tournois etalon . 27

Table 1 – Types of passive chromatic dispersion compensators . 11
Table 2 – Three-level IEC specification structure . 13
Table 3 – Standards interlink matrix . 17
Table 4 – Quality assurance options . 18
Table E.1 – Summary of technology dependent characteristics of PCDCs . 28

– 4 – IEC 61978-1:2014 © IEC 2014
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 standardizatio
...