IEC TR 62285:2023
(Main)Application guidelines for nonlinear coefficient measuring methods
Application guidelines for nonlinear coefficient measuring methods
IEC TR 62285:2023 which is a Technical Report, provides guidelines for uniform measurements of the nonlinear coefficient of class B single-mode fibres (see IEC 60793-2-50) in the 1 550 nm region. Measurements of the nonlinear coefficient are used to characterise specific single-mode fibre designs for the purpose of system design relative to power levels and distortion or noise effects derived from the nonlinear optical behaviour. This third edition cancels and replaces the second edition published in 2005. It constitutes a technical revision. This edition includes the following signification technical changes with respect to the previous revision:
a) change fibre type of pigtail to B-652.D fibre or fibre of same type with the fibre under test;
b) modifications on Figure A.1 and Formulas (A.3), (A.4);
c) add example values and recommended method A test conditions for B-G.654.E fibre, update Table C.1.
Guide d'application pour les méthodes de mesure du coefficient de non-linéarité
IEC TR 62285:2023 est disponible sous forme de IEC TR 62285:2023 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
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IEC TR 62285 ®
Edition 3.0 2023-10
TECHNICAL
REPORT
colour
inside
Application guidelines for nonlinear coefficient measuring methods
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.
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3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
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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.
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IEC TR 62285 ®
Edition 3.0 2023-10
TECHNICAL
REPORT
colour
inside
Application guidelines for nonlinear coefficient measuring methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-7739-3
– 2 – IEC TR 62285:2023 © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Abbreviated terms and symbols . 6
4.1 Abbreviated terms . 6
4.2 Symbols . 7
5 Background and overview of methods . 7
6 Apparatus . 8
6.1 General . 8
6.2 Light source . 8
6.3 Input optics . 8
6.4 Input positioner . 8
6.5 Cladding mode stripper . 8
6.6 Output positioner . 8
6.7 Output optics . 8
6.8 Computer . 9
7 Samples and specimens . 9
8 Procedure . 9
9 Calculations of interpretation of results . 9
10 Results . 10
10.1 Information available with each measurement . 10
10.2 Information available upon request . 10
Annex A (normative) Continuous wave dual-frequency method . 12
A.1 General . 12
A.2 Apparatus . 12
A.2.1 Layout of apparatus . 12
A.2.2 Sources . 13
A.2.3 Optical signal conditioning . 13
A.2.4 Power meters . 14
A.2.5 Optical spectrum analyser . 14
A.3 Samples and specimens . 14
A.4 Procedure . 15
A.4.1 General . 15
A.4.2 Calibration . 15
A.4.3 Operation . 15
A.5 Calculations . 16
A.5.1 Calculate phase values . 16
A.5.2 Confirm assumptions . 16
A.5.3 Complete the calculation . 16
Annex B (normative) Pulsed single-frequency method (PM) . 18
B.1 General . 18
B.2 Apparatus . 18
B.2.1 Layout of apparatus . 18
B.2.2 Source . 18
B.2.3 Optical signal conditioning . 18
B.2.4 Power meters . 19
B.2.5 Optical pulsewidth measurement . 19
B.2.6 Optical spectrum analyser . 19
B.3 Samples and specimens . 19
B.4 Procedure . 20
B.5 Calculations . 20
B.5.1 Peak power . 20
B.5.2 Phase shift . 20
B.5.3 Complete the calculations . 20
Annex C (informative) Guidance on the selection of fibre test length, power and
difference in optical wavelength when using method A . 22
Bibliography . 23
Figure A.1 – Output spectral characteristics . 12
Figure A.2 – Apparatus for method A . 13
Figure A.3 – Relationship of phase to intensity ratio. 16
Figure A.4 – Relationship of phase to power . 17
Figure B.1 – Test set-up for method B . 18
Figure B.2 – Output spectra . 19
Figure B.3 – Phase vs. peak input power for method B . 21
Table C.1 – Fibre characteristics for method A (representative values) . 22
– 4 – IEC TR 62285:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
APPLICATION GUIDELINES FOR NONLINEAR
COEFFICIENT MEASURING METHODS
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.
IEC TR 62285 has been prepared by subcommittee 86A: Fibres and cables, of IEC technical
committee 86: Fibre optics. It is a Technical Report.
This third edition cancels and replaces the second edition published in 20
...
IEC TR 62285 ®
Edition 3.0 2023-10
REDLINE VERSION
TECHNICAL
REPORT
colour
inside
Application guidelines for nonlinear coefficient measuring methods
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 Secretariat 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 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. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TR 62285 ®
Edition 3.0 2023-10
REDLINE VERSION
TECHNICAL
REPORT
colour
inside
Application guidelines for nonlinear coefficient measuring methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-7769-0
– 2 – IEC TR 62285:2023 RLV © IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Abbreviated terms and symbols . 7
4.1 Abbreviated terms . 7
4.2 Symbols . 7
5 Background and overview of methods . 7
6 Apparatus . 8
6.1 General . 8
6.2 Light source . 8
6.3 Input optics . 8
6.4 Input positioner . 8
6.5 Cladding mode stripper . 9
6.6 Output positioner . 9
6.7 Output optics . 9
6.8 Computer . 9
7 Samples and specimens . 9
8 Procedure . 9
9 Calculations of interpretation of results . 10
10 Documentation Results . 11
10.1 Information to be provided available with each measurement . 11
10.2 Information available upon request . 11
Annex A (normative) Continuous wave dual-frequency method . 12
A.1 Introduction General . 12
A.2 Apparatus . 13
A.2.1 Layout of apparatus . 13
A.2.2 Sources . 13
A.2.3 Optical signal conditioning . 13
A.2.4 Power meters . 14
A.2.5 Optical spectrum analyser . 14
A.3 Samples and specimens . 14
A.4 Procedure . 15
A.4.1 General . 15
A.4.2 Calibration . 15
A.4.3 Operation . 15
A.5 Calculations . 16
A.5.1 Calculate phase values . 16
A.5.2 Confirm assumptions . 16
A.5.3 Complete the calculation . 16
Annex B (normative) Pulsed single-frequency method (PM) . 18
B.1 Introduction General . 18
B.2 Apparatus . 18
B.2.1 Layout of apparatus . 18
B.2.2 Source . 18
B.2.3 Optical signal conditioning . 18
B.2.4 Power meters . 19
B.2.5 Optical pulsewidth measurement . 19
B.2.6 Optical spectrum analyser . 19
B.3 Samples and specimens . 19
B.4 Procedure . 20
B.5 Calculations . 20
B.5.1 Peak power . 20
B.5.2 Phase shift . 20
B.5.3 Complete the calculations . 20
Annex C (informative) List of acronyms and symbols .
Annex C (informative) Guidance on the selection of fibre test length, power and
difference in optical wavelength when using method A . 23
Bibliography . 24
Figure A.1 – Output spectral characteristics . 12
Figure A.2 – Apparatus for method A . 13
Figure A.3 – Relationship of phase to intensity ratio. 16
Figure A.4 – Relationship of phase to power . 17
Figure B.1 – Test set-up for method B . 18
Figure B.2 – Output spectra . 19
Figure B.3 – Phase vs. peak input power for method B . 21
Table C.1 – Fibre characteristics for method A (representative values) . 23
– 4 – IEC TR 62285:2023 RLV © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
APPLICATION GUIDELINES FOR NONLINEAR
COEFFICIENT MEASURING METHODS
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.
This redline version of the official IEC Standard allows the user to identify the
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