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. 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.
Keywords: fibre optic cable induced stress, power variations induced by mechanical disturbance

Composants et dispositifs actifs fibroniques - Procédures 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 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

General Information

Status
Published
Publication Date
06-May-2015
Current Stage
PPUB - Publication issued
Start Date
07-May-2015
Completion Date
07-May-2015
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IEC 62150-3
Edition 2.0 2015-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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–
Composants et dispositifs actifs fibroniques –
Procédures 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: 2015-05 (en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62150-3
Edition 2.0 2015-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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–
Composants et dispositifs actifs fibroniques –
Procédures 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
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-7179-7

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62150-3:2015 © IEC 2015
CONTENTS

CONTENTS ............................................................................................................................ 2

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

5.2 Test procedures for Tx interfaces ............................................................................ 8

5.2.1 Test procedures ............................................................................................... 8

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

5.3 Test procedures for Rx interfaces and optical receptors ........................................ 10

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 .................................................................................................. 11

6.1.5 Test load ....................................................................................................... 11

6.2 Test procedures for Tx interfaces .......................................................................... 11

6.2.1 Test procedures ............................................................................................. 11

6.2.2 Set-up ........................................................................................................... 11

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 ........................................ 12

6.3.1 Test procedures ............................................................................................. 12

6.3.2 LOS-indicator method .................................................................................... 13

---------------------- Page: 4 ----------------------
IEC 62150-3:2015 © IEC 2015 – 3 –

6.3.3 Receiver optical power monitor method ......................................................... 13

7 Test results ................................................................................................................... 13

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 ...................................................... 9

Figure 2 – Equipment set-up of Method A for Rx interfaces and optical receptors ................. 10

Figure 3 – Equipment set-up of Method B for Tx interfaces ................................................... 12

Figure 4 – Equipment set-up of Method B for Rx interface and optical receptors ................... 13

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

---------------------- Page: 5 ----------------------
– 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

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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.

This bilingual version (2019-07) corresponds to the monolingual English version, published in

2015-05.
---------------------- Page: 6 ----------------------
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.
The French version of this standard has not been voted upon.

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.

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.

---------------------- Page: 7 ----------------------
– 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
---------------------- Page: 8 ----------------------
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, and

optical sub-assembly design. There are also some patchcords which have insufficient ferrule

floating tolerance, as this is not specified in interface standards.
---------------------- Page: 9 ----------------------
– 8 – IEC 62150-3:2015 © IEC 2015
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 360° continuous rotation, the instrumentation should be capable of collecting at least one

data point for every 2,5 degrees of rotation, which equates to a response time of better than

100 ms for the measuring instrumentation.
5.1.4 Test load

The test load or weight should be applied to the end of the test cord. The test load is defined in

Annex A.
5.2 Test procedures for Tx interfaces
5.2.1 Test procedures

The test is conducted with a suitable fixture, as illustrated in Figure 1. (Figure 1 is an example

of the case using a 1,25 mm ferrule connector.) This example utilizes an optical transceiver (Tx)

port or other connectorized optical source. The simulated wiggle test cord (fibre cord and

connector) is flexed at the point of entry to the connector on the DUT by applying a load in the

form of a weight to the fibre while rotating the test fixture. The test is conducted as follows.

---------------------- Page: 10 ----------------------
IEC 62150-3:2015 © IEC 2015 – 9 –
5.2.2 Set-up

Mount the connector/optical assembly as shown in Figure 1 and connect the simulated wiggle

test cord from the device output port/Tx port to the power meter. If the DUT conta

...

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