Calibration of fibre-optic power meters

IEC 61315:2019 is applicable to instruments measuring radiant power emitted from sources that are typical for the fibre-optic communications industry. These sources include laser diodes, light emitting diodes (LEDs) and fibre-type sources. Both divergent and collimated radiations are covered. This document defines the calibration of power meters to be performed by calibration laboratories or by power meter manufacturers. This third edition cancels and replaces the second edition published in 2005. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) update of terms and definitions;
b) update of 5.1, including Table 1 (new type of source);
c) update of Annex A;
d) addition of Annex B on dB conversion.
Keywords: Fibre-optic power meters

Etalonnage de wattmètres pour dispositifs à fibres optiques

L'IEC 61315:2019 s'applique aux appareils qui mesurent la puissance rayonnante émise par des sources typiques pour l'industrie des communications par fibres optiques. Ces sources comprennent les diodes laser, les diodes émettant de la lumière (LED) et les sources fibrées. Le rayonnement divergent ainsi que le rayonnement collimaté sont couverts par le présent document. Ce dernier définit l'étalonnage des wattmètres à effectuer par des laboratoires d'étalonnage ou par des fabricants de wattmètres. Cette troisième édition annule et remplace la deuxième édition parue en 2005. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) mise à jour des termes et définitions;
b) mise à jour du 5.1, y compris le Tableau 1 (nouveau type de source);
c) mise à jour de l'Annexe A;
d) ajout d'une Annexe B sur la conversion en dB.
Mots-clés : wattmètres pour dispositifs à fibres optiques

General Information

Status
Published
Publication Date
28-Mar-2019
Technical Committee
Drafting Committee
Current Stage
PPUB - Publication issued
Start Date
09-Apr-2019
Completion Date
29-Mar-2019
Ref Project

Relations

Buy Standard

Standard
IEC 61315:2019 RLV - Calibration of fibre-optic power meters Released:3/29/2019 Isbn:9782832267325
English language
133 pages
sale 15% off
Preview
sale 15% off
Preview
Standard
IEC 61315:2019 - Calibration of fibre-optic power meters
English and French language
87 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


IEC 61315 ®
Edition 3.0 2019-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Calibration of fibre-optic power meters

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 Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

need further assistance, please contact the Customer Service

Centre: sales@iec.ch.
IEC 61315 ®
Edition 3.0 2019-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Calibration of fibre-optic power meters

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.140; 33.180.10 ISBN 978-2-8322-6732-5

– 2 – IEC 61315:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions. 7
4 Preparation for calibration . 16
4.1 Organization. 16
4.2 Traceability . 17
4.3 Advice for measurements and calibrations . 17
4.4 Recommendations to customers users . 18
5 Absolute power calibration . 18
5.1 Calibration methods . 18
5.2 Establishing the calibration conditions . 19
5.3 Calibration procedure . 20
5.4 Calibration uncertainty . 21
5.4.1 General . 21
5.4.2 Uncertainty due to the setup . 22
5.4.3 Uncertainty of the reference meter . 22
5.4.4 Correction factors and uncertainty caused by the change of conditions . 23
5.4.5 Uncertainty due to the test meter spectral bandwidths . 27
5.5 Reporting the results . 28
6 Measurement uncertainty of a calibrated power meter . 28
6.1 Overview . 28
6.2 Uncertainty at reference conditions . 28
6.3 Uncertainty at operating conditions . 29
6.3.1 General . 29
6.3.2 Determination of dependences on conditions . 30
6.3.3 Ageing . 30
6.3.4 Dependence on temperature . 31
6.3.5 Dependence on the power level (nonlinearity). 31
6.3.6 Dependence on the type of fibre or on the beam geometry . 31
6.3.7 Dependence on the connector-adapter combination . 33
6.3.8 Dependence on wavelength . 33
6.3.9 Dependence on spectral bandwidth . 34
6.3.10 Dependence on polarization . 35
6.3.11 Other dependences . 35
7 Nonlinearity calibration . 35
7.1 General . 35
7.2 Nonlinearity calibration based on superposition . 36
7.2.1 General . 36
7.2.2 Procedure . 37
7.2.3 Uncertainties. 38
7.3 Nonlinearity calibration based on comparison with a calibrated power meter . 39
7.3.1 General . 39
7.3.2 Procedure . 39

7.3.3 Uncertainties. 39
7.4 Nonlinearity calibration based on comparison with an attenuator . 40
7.5 Calibration of power meter for high power measurement . 40
Annex A (normative) Mathematical basis for measurement uncertainty calculations . 41
A.1 General . 41
A.2 Type A evaluation of uncertainty . 41
A.3 Type B evaluation of uncertainty . 42
A.4 Determining the combined standard uncertainty . 42
A.5 Reporting . 43
Annex B (informative) Linear to dB scale conversion of uncertainties . 44
B.1 Definition of decibel . 44
B.2 Conversion of relative uncertainties . 44
Bibliography . 45

Figure 1 – Typical spectral responsivity of photoelectric detectors . 14
Figure 2 – Example of a traceability chain . 16
Figure 3 – Measurement setup for sequential, fibre-based calibration . 19
Figure 4 – Change of conditions and uncertainty . 24
Figure 5 – Determining and recording an extension uncertainty . 30
Figure 6 – Possible subdivision of the optical reference plane into 10 × 10 squares, for
the measurement of the spatial response . 31
Figure 7 – Wavelength dependence of response due to Fabry-Perot type interference . 34
Figure 8 – Measurement setup of polarization dependent response . 35
Figure 9 – Nonlinearity calibration based on superposition . 36
Figure 10 – Measurement setup for nonlinearity calibration by comparison . 39

Table 1 – Calibration methods and correspondent typical power . 19
Table 2 – Nonlinearity . 38

– 4 – IEC 61315:2019 RLV © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CALIBRATION OF FIBRE-OPTIC POWER METERS

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
...


IEC 61315 ®
Edition 3.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Calibration of fibre-optic power meters

Étalonnage de wattmètres pour dispositifs à fibres optiques

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 l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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 Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and once 67 000 electrotechnical terminology entries in English and
a month by email. French extracted from the Terms and Definitions clause of IEC
publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or need CISPR.

further assistance, please contact the Customer Service

Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Le premier dictionnaire d'électrotechnologie en ligne au monde,
webstore.iec.ch/advsearchform avec plus de 22 000 articles terminologiques en anglais et en
La recherche avancée permet de trouver des publications IEC français, ainsi que les termes équivalents dans 16 langues
en utilisant différents critères (numéro de référence, texte, additionnelles. Egalement appelé Vocabulaire
comité d’études,…). Elle donne aussi des informations sur les Electrotechnique International (IEV) en ligne.

projets et les publications remplacées ou retirées.
Glossaire IEC - std.iec.ch/glossary
IEC Just Published - webstore.iec.ch/justpublished 67 000 entrées terminologiques électrotechniques, en anglais
Restez informé sur les nouvelles publications IEC. Just et en français, extraites des articles Termes et Définitions des
Published détaille les nouvelles publications parues. publications IEC parues depuis 2002. Plus certaines entrées
Disponible en ligne et une fois par mois par email. antérieures extraites des publications des CE 37, 77, 86 et
CISPR de l'IEC.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
Electropedia - www.electropedia.org

IEC 61315 ®
Edition 3.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Calibration of fibre-optic power meters

Étalonnage de wattmètres pour dispositifs à fibres optiques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.140; 33.180.10 ISBN 978-2-8322-6640-3

– 2 – IEC 61315:2019 © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions. 7
4 Preparation for calibration . 15
4.1 Organization. 15
4.2 Traceability . 15
4.3 Advice for measurements and calibrations . 15
4.4 Recommendations to users . 16
5 Absolute power calibration . 16
5.1 Calibration methods . 16
5.2 Establishing the calibration conditions . 17
5.3 Calibration procedure . 18
5.4 Calibration uncertainty . 19
5.4.1 General . 19
5.4.2 Uncertainty due to the setup . 19
5.4.3 Uncertainty of the reference meter . 20
5.4.4 Correction factors and uncertainty caused by the change of conditions . 21
5.4.5 Uncertainty due to the spectral bandwidths . 24
5.5 Reporting the results . 25
6 Measurement uncertainty of a calibrated power meter . 26
6.1 Overview . 26
6.2 Uncertainty at reference conditions . 26
6.3 Uncertainty at operating conditions . 26
6.3.1 General . 26
6.3.2 Determination of dependences on conditions . 27
6.3.3 Ageing . 28
6.3.4 Dependence on temperature . 28
6.3.5 Dependence on the power level (nonlinearity). 28
6.3.6 Dependence on the type of fibre or on the beam geometry . 29
6.3.7 Dependence on the connector-adapter combination . 30
6.3.8 Dependence on wavelength . 31
6.3.9 Dependence on spectral bandwidth . 32
6.3.10 Dependence on polarization . 32
6.3.11 Other dependences . 33
7 Nonlinearity calibration . 33
7.1 General . 33
7.2 Nonlinearity calibration based on superposition . 33
7.2.1 General . 33
7.2.2 Procedure . 34
7.2.3 Uncertainties. 35
7.3 Nonlinearity calibration based on comparison with a calibrated power meter . 36
7.3.1 General . 36
7.3.2 Procedure . 36

7.3.3 Uncertainties. 37
7.4 Nonlinearity calibration based on comparison with an attenuator . 37
7.5 Calibration of power meter for high power measurement . 37
Annex A (normative) Mathematical basis for measurement uncertainty calculations . 38
A.1 General . 38
A.2 Type A evaluation of uncertainty . 38
A.3 Type B evaluation of uncertainty . 39
A.4 Determining the combined standard uncertainty . 39
A.5 Reporting . 40
Annex B (informative) Linear to dB scale conversion of uncertainties . 41
B.1 Definition of decibel . 41
B.2 Conversion of relative uncertainties . 41
Bibliography . 42

Figure 1 – Typical spectral responsivity of photoelectric detectors . 13
Figure 2 – Example of a traceability chain . 14
Figure 3 – Measurement setup for sequential, fibre-based calibration . 17
Figure 4 – Change of conditions and uncertainty . 22
Figure 5 – Determining and recording an extension uncertainty . 27
Figure 6 – Possible subdivision of the optical reference plane into 10 × 10 squares, for
the measurement of the spatial response . 29
Figure 7 – Wavelength dependence of response due to Fabry-Perot type interference . 32
Figure 8 – Measurement setup of polarization dependent response . 32
Figure 9 – Nonlinearity calibration based on superposition . 34
Figure 10 – Measurement setup for nonlinearity calibration by comparison . 36

Table 1 – Calibration methods and correspondent typical power . 16
Table 2 – Nonlinearity . 35

– 4 – IEC 61315:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CALIBRATION OF FIBRE-OPTIC POWER METERS

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 f
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.