SIST EN 62150-3:2016

Fibre optic active components and devices - Test and measurement procedures - Part 3: Optical power variation induced by mechanical disturbance in optical receptacles and transceiver interfaces (IEC 62150-3:2015)

It has been found that some optical transceivers and receptacles are susceptible to fibre optic
cable induced stress when side forces are applied to the mated cable-connector assembly,
resulting in variations in the transmitted optical power. The purpose of this part of IEC 62150
is to define physical stress tests to ensure that such optical connections (cable and receptacle)
can continue to function within specifications.
This standard specifies the test requirements and procedures for qualifying optical devices for
sensitivity to coupled power variations induced by mechanical disturbance at the optical ports
of the device.
This standard applies to active devices with optical receptacle interfaces.
This standard describes the testing of transceivers for use with single-mode connectors
having either 2,5 mm or 1,25 mm ferrules.

Aktive Lichtwellenleiter-Bauteile und -Bauelemente - Grundlegende Prüf- und Messverfahren - Teil 3: Optische Leistungsabweichungen bedingt durch mechanische Störungen in optischen Kupplungen und Transceiver-Schnittstellen (IEC 62150-3:2015)

Composants et dispositifs actifs à fibres optiques - Procédures fondamentales d'essais et de mesures - Partie 3: Variation de puissance optique induite par des perturbations mécaniques dans les interfaces d'embases et d'émetteurs-récepteurs optiques (IEC 62150-3:2015)

IEC 62150-3:2015 On a constaté que certains émetteurs-récepteurs et embases optiques sont sensibles aux contraintes induites par les câbles fibroniques lorsque l'ensemble câble-connecteur accouplé est soumis à des forces latérales, ce qui génère des variations de la puissance optique transmise. La présente partie de l'IEC 62150 a pour objectif de définir des essais de contraintes physiques pour garantir que de telles connexions optiques (câble et embase) peuvent continuer à fonctionner conformément aux spécifications. On a constaté que certains émetteurs-récepteurs et embases optiques sont sensibles aux contraintes induites par les câbles fibroniques lorsque l'ensemble câble-connecteur accouplé est soumis à des forces latérales, ce qui génère des variations de la puissance optique transmise. La présente partie de l'IEC 62150 a pour objectif de définir des essais de contraintes physiques pour garantir que de telles connexions optiques (câble et embase) peuvent continuer à fonctionner conformément aux spécifications. La présente norme spécifie les exigences d'essais et les procédures pour qualifier la sensibilité de dispositifs optiques à des variations de la puissance couplée induites par des perturbations mécaniques au niveau des ports optiques du dispositif. La présente norme s'applique aux dispositifs actifs dotés d'interfaces d'embases optiques. La présente norme décrit les essais des émetteurs-récepteurs destinés à être utilisés avec des connecteurs unimodaux comportant des férules de 2,5 mm ou 1,25 mm. La présente norme spécifie les exigences d'essais et les procédures pour qualifier la sensibilité de dispositifs optiques à des variations de la puissance couplée induites par des perturbations mécaniques au niveau des ports optiques du dispositif. La présente norme s'applique aux dispositifs actifs dotés d'interfaces d'embases optiques. La présente norme décrit les essais des émetteurs-récepteurs destinés à être utilisés avec des connecteurs unimodaux comportant des férules de 2,5 mm ou 1,25 mm. Cette deuxième édition annule et remplace la première édition, parue en 2012, dont elle constitue une révision technique. La présente édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- étendue du champ d'application aux émetteurs-récepteurs avec interfaces de connecteurs SC, en plus des émetteurs-récepteurs avec interfaces de connecteurs LC spécifiés dans la première édition, dans la mesure où ces deux interfaces d'émetteurs-récepteurs sont très importantes dans l'industrie;
- ajout d’une nouvelle Annexe E traitant de la différence de valeur de charge pour le type de connecteur selon la méthode A.
Mots clés : contraintes induites par les câbles fibroniques, puissance couplée induites par des perturbations mécaniques

Aktivne optične komponente in naprave - Postopki preskušanja in merjenja - 3. del: Spreminjanje optične moči zaradi mehanskih motenj v optičnih sprejemnikih in oddajno-sprejemniških vmesnikih (IEC 62150-3:2015)

Ugotovljeno je bilo, da so nekateri optični oddajniki-sprejemniki in sprejemniki med uporabo stranskih sil pri sestavu kabla in priključka občutljivi na napetost kabla iz optičnih vlaken zaradi sprememb v oddajani optični moči. Namen tega dela standarda IEC 62150 je opredelitev preskusov fizične napetosti za zagotovitev nadaljnjega delovanja takšnih optičnih povezav (kabelskih in z vtičnico) v okviru specifikacij.
Ta standard določa preskusne zahteve in postopke za razvrstitev optičnih naprav glede na občutljivost spreminjanja moči, ki jih povzročajo mehanske motnje pri optičnih vhodih naprave.
Ta standard velja za dejavne naprave z vmesniki optičnega sprejemnika. Ta standard opisuje preskušanje oddajnikov-sprejemnikov za uporabo z enorodnimi konektorji z 2,5-mm ali 1,25-mm tulkami.

General Information

• Status: Published
• Publication Date: 05-Jan-2016
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2015
• Due Date: 06-Nov-2015
• Completion Date: 06-Jan-2016
• Ref Project: EN 62150-3:2015 - Fibre optic active components and devices - Test and measurement procedures - Part 3: Optical power variation induced by mechanical disturbance in optical receptacles and transceiver interfaces

Relations

• Replaces: SIST EN 62150-3:2012 - Fibre optic active components and devices - Test and measurement procedures - Part 3: Optical power variation induced by mechanical disturbance in optical receptacles and transceiver interfaces (IEC 62150-3:2012)
• Effective Date: 25-Feb-2014
• Revised: SIST EN 62150-3:2012 - Fibre optic active components and devices - Test and measurement procedures - Part 3: Optical power variation induced by mechanical disturbance in optical receptacles and transceiver interfaces (IEC 62150-3:2012)
• Effective Date: 06-May-2014
• Replaces: SIST EN 62150-3:2012 - Fibre optic active components and devices - Test and measurement procedures - Part 3: Optical power variation induced by mechanical disturbance in optical receptacles and transceiver interfaces (IEC 62150-3:2012)
• Effective Date: 28-Jan-2023
• Replaces: SIST EN 62150-3:2012 - Fibre optic active components and devices - Test and measurement procedures - Part 3: Optical power variation induced by mechanical disturbance in optical receptacles and transceiver interfaces (IEC 62150-3:2012)
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62150-3:2016
01-februar-2016
1DGRPHãþD
SIST EN 62150-3:2012
$NWLYQHRSWLþQHNRPSRQHQWHLQQDSUDYH3RVWRSNLSUHVNXãDQMDLQPHUMHQMD
GHO6SUHPLQMDQMHRSWLþQHPRþL]DUDGLPHKDQVNLKPRWHQMYRSWLþQLKVSUHMHPQLNLK
LQRGGDMQRVSUHMHPQLãNLKYPHVQLNLK,(&
Fibre optic active components and devices - Test and measurement procedures - Part 3:
Optical power variation induced by mechanical disturbance in optical receptacles and
transceiver interfaces (IEC 62150-3:2015)
Aktive Lichtwellenleiter-Bauteile und -Bauelemente - Grundlegende Prüf- und
Messverfahren - Teil 3: Optische Leistungsabweichungen bedingt durch mechanische
Störungen in optischen Kupplungen und Transceiver-Schnittstellen (IEC 62150-3:2015)
Composants et dispositifs actifs à fibres optiques - Procédures fondamentales d'essais
et de mesures - Partie 3: Variation de puissance optique induite par des perturbations
mécaniques dans les interfaces d'embases et d'émetteurs-récepteurs optiques (IEC
62150-3:2015)
Ta slovenski standard je istoveten z: EN 62150-3:2015
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
SIST EN 62150-3:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62150-3:2016

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SIST EN 62150-3:2016


EUROPEAN STANDARD EN 62150-3

NORME EUROPÉENNE

EUROPÄISCHE NORM
August 2015
ICS 33.180.20 Supersedes EN 62150-3:2012
English Version
Fibre optic active components and devices -
Test and measurement procedures -
Part 3: Optical power variation induced by mechanical
disturbance in optical receptacles and transceiver interfaces
(IEC 62150-3:2015)
Composants et dispositifs actifs à fibres optiques - Aktive Lichtwellenleiter-Bauteile und -Bauelemente -
Procédures fondamentales d'essais et de mesures - Grundlegende Prüf- und Messverfahren -
Partie 3: Variation de puissance optique induite par des Teil 3: Optische Leistungsabweichungen bedingt durch
perturbations mécaniques dans les interfaces d'embases et mechanische Störungen in optischen Kupplungen und
d'émetteurs-récepteurs optiques Transceiver-Schnittstellen
(IEC 62150-3:2015) (IEC 62150-3:2015)
This European Standard was approved by CENELEC on 2015-06-11. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 62150-3:2015 E

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SIST EN 62150-3:2016
EN 62150-3:2015
European foreword
The text of document 86C/1311/FDIS, future edition 2 of IEC 62150-3, prepared by SC 86C "Fibre
optic systems and active devices" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 62150-3:2015.

The following dates are fixed:
(dop) 2016-03-11
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2018-06-11
standards conflicting with the
document have to be withdrawn

This document supersedes EN 62150-3:2012.

EN 62150-3:2015 includes the following significant technical changes with respect to
EN 62150-3:2012:
– extension of application field to SC connector interface transceivers in addition to LC connector
interface transceivers specified in the first edition as both transceiver interfaces are very important
in the industry;
– addition of a new Annex E dealing with load value difference for connector type in Method A.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.

Endorsement notice
The text of the International Standard IEC 62150-3:2015 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 61300 Series NOTE Harmonized as EN 61300 Series.
IEC 61754-4 NOTE Harmonized as EN 61754-4.
IEC 61754-20 NOTE Harmonized as EN 61754-20.
2

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SIST EN 62150-3:2016
EN 62150-3:2015
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu

Publication Year Title EN/HD Year

IEC 61753 Series Fibre optic interconnecting devices and EN 61753 Series
passive components - Performance
standard
IEC 61753-021-6 -  Fibre optic interconnecting devices and EN 61753-021-6 -
passive components performance standard
- Part 021-6: Grade B/2 single-mode fibre
optic connectors for category O -
Uncontrolled environment
IEC 61754 Series Fibre optic interconnecting devices and EN 61754 Series
passive components - Fibre optic
connector interfaces

3

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SIST EN 62150-3:2016

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SIST EN 62150-3:2016




IEC 62150-3

®


Edition 2.0 2015-05




INTERNATIONAL



STANDARD








colour

inside










Fibre optic active components and devices – Test and measurement

procedures –

Part 3: Optical power variation induced by mechanical disturbance


in optical receptacles and transceiver interfaces
























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 33.180.20 ISBN 978-2-8322-2670-4



  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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SIST EN 62150-3:2016
– 2 – IEC 62150-3:2015 © IEC 2015
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 7
4 Measurement consideration . 7
4.1 Multiple test methods . 7
4.2 Two wiggle loss mechanisms . 7
4.2.1 Rationale for two different wiggle loss test methods . 7
4.2.2 Case A: Point of action for the ferrule . 7
4.2.3 Case B: Point of action for the plug housing . 8
5 Test Method A . 8
5.1 Apparatus . 8
5.1.1 General . 8
5.1.2 Test cord . 8
5.1.3 Power meter . 8
5.1.4 Test load . 8
Test procedures for Tx interfaces . 9
5.2
5.2.1 Test procedures . 9
5.2.2 Set-up . 9
5.2.3 Initial measurement . 9
5.2.4 Apply load and rotate . 9
5.2.5 Wiggle loss . 9
Test procedures for Rx interfaces and optical receptors . 10
5.3
5.3.1 Test procedures . 10
5.3.2 LOS indicator method . 10
5.3.3 Receiver optical power monitor method . 10
6 Test Method B . 11
6.1 Apparatus . 11
6.1.1 General . 11
6.1.2 Test fixture and rotation mechanism . 11
6.1.3 Test cord . 11
6.1.4 Power meter . 12
6.1.5 Test load . 12
6.2 Test procedures for Tx interfaces . 12
6.2.1 Test procedures . 12
6.2.2 Set-up . 12
6.2.3 Initial measurement . 12
6.2.4 Apply load . 12
6.2.5 Measurement . 12
6.2.6 Wiggle loss . 12
6.3 Test procedures for Rx interfaces and optical receptors . 13
6.3.1 Test procedures . 13
6.3.2 LOS-indicator method . 13
6.3.3 Receiver optical power monitor method . 13

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SIST EN 62150-3:2016
IEC 62150-3:2015 © IEC 2015 – 3 –
7 Test results . 14
Annex A (normative) Load requirements . 15
A.1 Loads for Method A . 15
A.2 Loads for Method B . 15
Annex B (normative) Summary of test conditions . 16
Annex C (normative) Characteristics of the test cord . 17
Annex D (normative) Floating tolerance . 20
Annex E (informative) Load value difference for connector type in Method A . 21
Bibliography . 22

Figure 1 – Equipment setup of Method A for Tx interfaces . 10
Figure 2 – Equipment set-up of Method A for Rx interfaces and optical receptors . 11
Figure 3 – Equipment set-up of Method B for Tx interfaces . 13
Figure 4 – Equipment set-up of Method B for Rx interface and optical receptors . 14
Figure C.1 – Wiggle test cord interface (LC connector) . 17
Figure C.2 – Wiggle test cord interface (SC connector) . 18
Figure D.1 – Floating tolerance . 20
Figure E.1 – Floating tolerance . 21

Table 1 – Multiple test methods . 7
Table A.1 – Method A: Loads applied for devices using connector cords with 1,25 mm
ferrule and 2,5 mm ferrule . 15
Table A.2 – Method B: Loads applied for devices using connector cords with 1,25 mm
ferrule and 2,5 mm ferrule . 15
Table B.1 – Summary of test conditions for Method A (normative) . 16
Table B.2 – Summary of test conditions for Method B (normative) . 16
Table C.1 – Wiggle test cord specification (LC connector) . 17
Table C.2 – Dimensions of the wiggle test cord interface . 18
Table C.3 – Wiggle test cord specification (SC connector) . 18
Table C.4 – Dimensions of the wiggle test cord interface . 19

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SIST EN 62150-3:2016
– 4 – IEC 62150-3:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
TEST AND MEASUREMENT PROCEDURES –

Part 3: Optical power variation induced by mechanical
disturbance in optical receptacles and transceiver interfaces

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.
International Standard IEC 62150-3 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 2012 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– extension of application field to SC connector interface transceivers in addition to LC
connector interface transceivers specified in the first edition as both transceiver interfaces
are very important in the industry;
– addition of a new Annex E dealing with load value difference for connector type in
Method A.

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SIST EN 62150-3:2016
IEC 62150-3:2015 © IEC 2015 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
86C/1311/FDIS 86C/1330/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62150 series, published under the general title Fibre optic active
components and devices – Test and measurement procedures, can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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SIST EN 62150-3:2016
– 6 – IEC 62150-3:2015 © IEC 2015
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
TEST AND MEASUREMENT PROCEDURES –

Part 3: Optical power variation induced by mechanical
disturbance in optical receptacles and transceiver interfaces



1 Scope
It has been found that some optical transceivers and receptacles are susceptible to fibre optic
cable induced stress when side forces are applied to the mated cable-connector assembly,
resulting in variations in the transmitted optical power. The purpose of this part of IEC 62150
is to define physical stress tests to ensure that such optical connections (cable and receptacle)
can continue to function within specifications.
This standard specifies the test requirements and procedures for qualifying optical devices for
sensitivity to coupled power variations induced by mechanical disturbance at the optical ports
of the device.
This standard applies to active devices with optical receptacle interfaces.
This standard describes the testing of transceivers for use with single-mode connectors
having either 2,5 mm or 1,25 mm ferrules.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61753 (all parts), Fibre optic interconnecting devices and passive components
performance standard
IEC 61753-021-6, Fibre optic interconnecting devices and passive components performance
standard – Part 021-6: Grade B/2 single-mode fibre optic connectors for category O –
Uncontrolled environment
IEC 61754 (all parts), Fibre optic interconnecting devices and passive components – Fibre
optic connector interfaces
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
wiggle
mechanical disturbances that induce coupled optical power variation in the optical receptacle
and transceiver interface

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SIST EN 62150-3:2016
IEC 62150-3:2015 © IEC 2015 – 7 –
3.1.2
wiggle loss
variation in coupled output power (with respect to a no-load, non-rotated measurement)
induced in an optical module or receptacle when the mated connector is laterally stressed
3.2 Abbreviations
DUT device under test
LOS loss of signal
Rx receiver
Tx transmitter
4 Measurement consideration
4.1 Multiple test methods
Since the wiggle loss mechanisms are categorized into two different cases, Case A and B,
this standard defines two measurement methods, Method A and B, as shown in Table 1.
Method A and B are applicable to the tests for the mechanical endurance of transceivers
under wiggle Case A and B, respectively.
Table 1 – Multiple test methods
Test Applicable to Example of parameters to be included
methods
Method A Wiggle Case A: test for optical transceivers use Test procedure, test fixture, test jumper, test
with patchcord terminated to connectors which load
meet interface standards (IEC 61754 series)
Method B Wiggle Case B: test for optical transceivers use Test procedure, test fixture, test jumper, test
with patchcord terminated to connectors which load
meet both interface standards (IEC 61754
series) and performance standards (IEC 61753
series)

4.2 Two wiggle loss mechanisms
4.2.1 Rationale for two different wiggle loss test methods
Some optical transceivers and receptacles are susceptible to fibre optic cable induced stress
when forces are applied to the mated cable-connector assembly. Depending on the structure
of fibre-optic connectors, two different points of action for the receptacle cause two different
types of wiggle loss.
The intention of Method A is to help ensure that the transceiver port design is robust enough
to work with a variety of cables that meet interface standards available in the field. The
intention of Method B is to ensure port designs are robust enough to endure potential side
loads during operation and installation with cables of known performance.
To guarantee the mechanical robustness of optical transceivers both Methods A and B or
either Method A or B shall be chosen as appropriate.
4.2.2 Case A: Point of action for the ferrule
When the ferrule floating tolerance is insufficient (see Annex D), external side forces applied
to the patchcord can cause deformation of the sleeve of the receptacle caused by the ferrule
bending moment. This causes variations in the transmitted optical power of transceivers. In
this case, the mechanical robustness of transceivers depends on the sleeve, receptacle port,

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SIST EN 62150-3:2016
– 8 – IEC 62150-3:2015 © IEC 2015
and optical sub-assembly design. There are also some patchcords which have insufficient
ferrule floating tolerance, as this is not specified in interface standards.
4.2.3 Case B: Point of action for the plug housing
When the ferrule floating tolerance is sufficient, external forces applied to the patchcord
cause deformation of the receptacle housing caused by the plug bending moment. This
causes variations in the transmitted optical power of transceivers. In this case, the mechanical
endurance of transceivers depends on the design of the receptacle housings. Sufficient
ferrule floating tolerance can be guaranteed by patchcord performance standards as specified
in Annex C, Method B.
5 Test Method A
5.1 Apparatus
5.1.1 General
An example of the test apparatus is shown in Figure 1. Details of the elements are given in
the following subclauses. Measurement wavelength is in accordance with the wavelength of
transceiver specifications, and the test data is obtained at room temperature.
The exact details of the test fixture will depend on the type of DUT. For example, if an optical
transceiver is being evaluated, a test board capable of securing and powering up the
transceiver may be used. In this case, it is centre-mounted to the spindle of a rotation
mechanism so that it can be rotated symmetrically over 360°.
5.1.2 Test cord
In order to simulate the wiggle loss mechanism of Case A, specially designed test patchcords
called simulated wiggle test cords are used in Method A. Detail specifications of the simulated
wiggle test cord are defined in Annex C.
In Figure 1, the test cord is connected to the transceiver under test. The test jumper has a
weight applied to the end of the test cord to stress the connection to the DUT. The test cord is
connected to a power meter at the other end to record the transmitted power variations.
5.1.3 Power meter
The power meter is used to measure variations in the coupled power from the DUT. It is set-
up to record the maximum peak-to-peak excursions in power level normalized around the
initial no-load measurement. In the case of Test Method A, the following measurement set-up
is recommended. Both the rotation mechanism (e.g. stepper motor) and power meter are
interfaced to a computer for control and data logging purposes. Ideally, the controller software
can manipulate the direction of rotation, speed and step increments of the stepper motor.
During the 3
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