Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-14: Tests - High optical power

IEC 61300-2-14:2021 is available as IEC 61300-2-14:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61300-2-14:2021 describes a procedure for determining the suitability of a fibre optic interconnecting device or a passive component to withstand exposure to the optical power which occurs during its operation. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- harmonizing IEC 61300-1:2016 and IEC 61300-3-4:2012;
- addition of abbreviated terms;
- addition of Clause A.2 regarding input optical power from both ends.

Dispositifs d’interconnexion et composants passifs fibroniques - Procédures fondamentales d’essais et de mesures - Partie 2-14: Essais - Puissance optique élevée

IEC 61300-2-14:2021 est disponible sous forme de IEC 61300-2-14:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 61300-2-14:2021 décrit une méthode en vue de déterminer l'aptitude d'un dispositif d'interconnexion ou d'un composant passif fibronique à résister à l'exposition à une puissance optique susceptible d'apparaître au cours du fonctionnement. Cette quatrième édition annule et remplace la troisième édition parue en 2012. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente :
- harmonisation de l’IEC 61300-1:2016 et de l’IEC 61300-3-4:2012;
- ajout de termes abrégés;
- ajout de l’Article A.2 relatif à la puissance optique d’entrée des deux extrémités.

General Information

Status
Published
Publication Date
10-Feb-2021
Current Stage
PPUB - Publication issued
Completion Date
11-Feb-2021
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IEC 61300-2-14
Edition 4.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-14: Tests – High optical power
Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures –
Partie 2-14: Essais – Puissance optique élevée
IEC 61300-2-14:2021-02(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61300-2-14
Edition 4.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-14: Tests – High optical power
Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d'essais et de mesures –
Partie 2-14: Essais – Puissance optique élevée
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-9267-9

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 61300-2-14:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms, definitions and abbreviated terms ........................................................................ 5

3.1 Terms and definitions .............................................................................................. 5

3.2 Abbreviated terms ................................................................................................... 5

4 Apparatus ........................................................................................................................ 6

4.1 Source (S) .............................................................................................................. 6

4.2 Optical detector (D) ................................................................................................. 6

4.3 Environmental chamber .......................................................................................... 7

4.4 Data acquisition system (DAS) ................................................................................ 7

4.5 Branching device (BD) ............................................................................................ 7

4.6 Temporary joints (TJ) .............................................................................................. 7

4.7 Safety devices ........................................................................................................ 7

4.8 Test set-up ............................................................................................................. 7

5 Procedure ........................................................................................................................ 8

5.1 Preconditioning ....................................................................................................... 8

5.2 Initial examinations and measurements ................................................................... 8

5.3 Conditioning ............................................................................................................ 8

5.4 Recovery ................................................................................................................ 8

5.5 Final examinations and measurements ................................................................... 9

6 Severity ........................................................................................................................... 9

6.1 General ................................................................................................................... 9

6.2 Optical power .......................................................................................................... 9

6.3 Wavelengths ........................................................................................................... 9

6.4 Temperature ........................................................................................................... 9

6.5 Humidity ................................................................................................................. 9

6.6 Exposure time ......................................................................................................... 9

7 Details to be specified ................................................................................................... 10

Annex A (normative) Examples of test set-up ....................................................................... 11

A.1 WDM devices ........................................................................................................ 11

A.2 Input optical power from both ends ....................................................................... 11

A.3 Series connection set-up ....................................................................................... 12

Annex B (informative) Examples of pass/fail criteria during exposure time ........................... 14

B.1 General ................................................................................................................. 14

B.2 Attenuation limitation of monitoring ....................................................................... 14

B.3 Return loss limitation ............................................................................................ 15

B.4 Judgment based on the change ............................................................................ 15

Bibliography .......................................................................................................................... 16

Figure 1 – Typical optical power test set-up ............................................................................ 7

Figure A.1 – Example of optical power test set-up for a 2 x 1 WDM device ........................... 11

Figure A.2 – Example of test set-up of both direction input test ............................................. 12

Figure A.3 – Example of optical power test set-up in series connection ................................. 13

---------------------- Page: 4 ----------------------
IEC 61300-2-14:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –
Part 2-14: Tests – High optical power
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

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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

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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

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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 61300-2-14 has been prepared by subcommittee 86B: Fibre optic

interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.

This fourth edition cancels and replaces the third edition published in 2012. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) harmonizing IEC 61300-1:2016 and IEC 61300-3-4:2012;
b) addition of abbreviated terms;
c) addition of Clause A.2 regarding input optical power from both ends.
---------------------- Page: 5 ----------------------
– 4 – IEC 61300-2-14:2021 © IEC 2021
The text of this International Standard is based on the following documents:
CDV Report on voting
86B/4299/CDV 86B/4362A/RVC

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 61300 series, published under the general title Fibre optic

interconnecting devices and passive components – Basic test and measurement procedures,

can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 61300-2-14:2021 © IEC 2021 – 5 –
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –
Part 2-14: Tests – High optical power
1 Scope

This part of IEC 61300 describes a procedure for determining the suitability of a fibre optic

interconnecting device or a passive component to withstand exposure to the optical power which

occurs during its operation.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.

IEC 60825-1, Safety of laser products – Part 1: Equipment classification and requirements

IEC 61300-1, Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures – Part 1: General and guidance

IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures – Part 3-1: Examinations and measurements – Visual examination

IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of

changes in attenuation and return loss

IEC 61300-3-35, Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures – Part 3-35: Examinations and measurements – Visual inspection of

fibre optic connectors and fibre-stub transceivers
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.2 Abbreviated terms
CWDM course wavelength division multiplexing
DAS data acquisition system
DUT device under test
---------------------- Page: 7 ----------------------
– 6 – IEC 61300-2-14:2021 © IEC 2021
DWDM dense wavelength division multiplexing
IL insertion loss
ISO optical isolator
LD laser diode
OSA optical spectrum analyzer
PDL polarization dependent loss
RL return loss
TLS tunable light source
WDL wavelength dependent loss
WDM wavelength division multiplexing
WWDM wide wavelength division multiplexing
4 Apparatus
4.1 Source (S)

The source unit consists of an optical emitter, the means to connect to it and the associated

drive electronics. A tunable light source (TLS) in which a specific output wavelength can be

tuned may be chosen as the optical emitter. A TLS may consist of a tunable LD and an optical

amplifier or a fibre ring laser. Generally, the power and stability requirements of the test will

necessitate that the optical emitter has a fibre pigtail. It shall have a stable output power and

wavelength/frequency over the measurement period. For DWDM devices, the frequency stability

(instead of the wavelength stability) shall be less than half of the channel bandwidth. Unless

otherwise stated in the relevant specification, the source shall have the following

characteristics:
a) centre wavelength stability:
– nominal centre wavelength ±5 nm (for WWDM and CWDM devices);
b) centre frequency stability:

– nominal centre frequency ±6,3 GHz (for DWDM devices of 25 GHz channel bandwidth);

– nominal centre frequency ±12,5 GHz (for DWDM devices of 50 GHz channel bandwidth);

– nominal centre frequency ±25 GHz (for DWDM devices of 100 GHz channel bandwidth);

c) output power stability:
– nominal output power ±0,05 dB.
4.2 Optical detector (D)

The optical detector unit consists of an optical detector, the means to connect to it and the

associated electronics. The detector shall have sufficient dynamic range to make the necessary

measurements and shall be linear over the measurement range. The detector shall be stable

over the measurement period and shall have an operational wavelength range consistent with

the DUT. The connection to the detector shall be an adaptor that accepts a connector plug of

the appropriate design. The detector shall be capable of capturing all light emitted by the

connector plug. Unless otherwise stated in the relevant specification, the detector shall have

the following characteristics:
– maximum nonlinearity: ≤ ±0,1 dB;
– accuracy including polarization dependency: ≤ ±0,05 dB;
– resolution: ≤ 0,01 dB.
---------------------- Page: 8 ----------------------
IEC 61300-2-14:2021 © IEC 2021 – 7 –
4.3 Environmental chamber

The test set-up shall include an environmental chamber capable of producing and maintaining

the specified temperature and/or humidity.
4.4 Data acquisition system (DAS)

Recording the optical power readings of the optical detector may be done either manually or

automatically. An appropriate DAS shall be used where measurements are performed
automatically.
4.5 Branching device (BD)

The splitting ratio of the branching device shall be stable over the optical powers and

wavelengths chosen for the test. It shall also be insensitive to polarization. A splitting ratio of

1:99 is recommended for the branching device in order to input high power to the DUT and low

power to the optical detector.
4.6 Temporary joints (TJ)

These are typically used in connecting the device under test to the test apparatus. For the test

requirements of optical power and stability, the temporary joints shall be fusion splices.

4.7 Safety devices

All necessary safety devices, including laser safety glasses, signs and other safety materials,

shall be provided in order to protect individuals from possible hazards during testing.

4.8 Test set-up

For two-port optical components, a typical layout for the test apparatus is shown in Figure 1.

This test procedure involves the use of optical powers which constitute a potential ocular and

skin hazard to test personnel. All necessary safety procedures shall be adopted in accordance

with IEC 60825-1. In particular, the DUT shall be unpowered (that is, with no power propagating

in the fibre) when conducting a visual examination.

Optical connectors shall not be used. Fusion splices shall be used for all connecting points as

described in 4.6.
Key
BD branching device
D detector
DAS data acquisition system
DUT device under test
S light source
TJ temporary joint
Figure 1 – Typical optical power test set-up
---------------------- Page: 9 ----------------------
– 8 – IEC 61300-2-14:2021 © IEC 2021

For multiport devices such as branching devices, all combinations of input and output ports

shall be tested, unless otherwise stated in the relevant specification.

For WDM devices, multiple wavelengths shall be input at the same time according to the

application. Clause A.1 describes an example of the test set-up for WDM devices.

To minimize test equipment, the DUTs may be connected in series. Clause A.2 describes an

example of the test set-up for series-connected DUTs.
5 Procedure
5.1 Preconditioning
The chosen test samples shall be representative of a standard product.

Prepare and clean the DUTs according to the manufacturer’s instructions. Visual examination

shall be undertaken in accordance with IEC 61300-3-1 and IEC 61300-3-35. Debris or the

presence of contamination is one of the primary causes of failure in high optical power

connector applications.
NOTE IEC TR 62627-01 describes fibre optic connector cleaning methods.

Precondition the DUTs for 2 h or more at the standard atmospheric conditions as defined in

IEC 61300-1, unless otherwise specified in the relevant specification.
5.2 Initial examinations and measurements

Perform initial examinations and measurements on the DUTs as required by the relevant

specification. The results of the initial measurements shall be within the limits established in

the relevant specification.
5.3 Conditioning

a) Set the chamber and the DUT to the standard atmospheric conditions. Place the DUT in the

chamber in its normal operating position. The hook-ups of the DUT to the peripheral

equipment shall also be placed in their normal operating position, where required.

b) Set the chamber temperature and humidity to the specified severities (see 6.4 and 6.5). The

rate of change of temperature shall not exceed 1 °C/min, averaged over a maximum period

of 5 min. Allow the DUT to reach the set stable temperature and maintain the temperature

for the exposure time.

c) Set the wavelength and optical power to be input to the DUT and turn on the optical source

and input optical power to the DUT.

d) Continue to input the optical power to the DUT for the exposure time specified (see 6.6).

Monitor the changes in attenuation and return loss of the DUT according to IEC 61300-3-3

during the exposure time. The changes shall be within the pass criteria specified in the

relevant specification (see Annexe B).

NOTE Optical power absorption within the DUT can cause its internal temperature to rise leading to a change

in attenuation. The duration of changing attenuation depends on the absorption rate and the thermal capacity of

the DUT. Examples of the high power test results are described in IEC TR 62627-03-02 and IEC TR 62627-03-

03.

e) At the completion of the exposure time, stop inputting the optical power and change the

temperature in the chamber to the standard atmospheric condition. Continue to maintain the

DUT in the chamber while the temperature is gradually changed.
5.4 Recovery

Allow the DUT to remain under the standard atmospheric condition for 2 h or more, as defined

in IEC 61300-1, unless otherwise specified in the relevant specification.
---------------------- Page: 10 ----------------------
IEC 61300-2-14:2021 © IEC 2021 – 9 –
5.5 Final examinations and measurements

On completion of the test, remove all fixtures and make final examinations and measurements

on the DUT, as required by the relevant specification, to ensure that there is no permanent

damage to the DUT. Clean the DUT according to the manufacturer’s instructions. The results

of the final measurement shall be within the limit established in the relevant specification.

Unless otherwise specified in the relevant specification, visually examine the DUT in

accordance with IEC 61300-3-1. Check for evidence of any degradation in the DUT. These

include, for example:
a) broken, loose or damaged parts or accessories;
b) breaking or damage to the cable jacket, seals, strain relief or fibres;
c) displaced, bent, or broken parts.
6 Severity
6.1 General

Severity is a combination of an optical power, a wavelength, a temperature, humidity and an

exposure time. The severity shall be specified in the relevant specification.
NOTE IEC TR 62627-03-04 gives guidelines for high optical power testing.
6.2 Optical power

The optical power of the test shall be decided in consideration of the application, unless

otherwise stated in the relevant specification. The recommended power levels for testing are:

10 mW, 30 mW, 50 mW, 100 mW, 300 mW and 500 mW.
6.3 Wavelengths

The test wavelength shall be the centre or typical wavelength of all operating wavelength ranges

specified in the relevant specification. The recommended wavelengths for testing are:

980 nm, 1 310 nm, 1 490 nm, 1 510 nm, 1 550 nm, 1 580 nm, 1 610 nm, 1 625 nm and
1 650 nm.

For WDM devices, the combinations of multi-wavelengths which are input at the same time shall

be decided in consideration of the application, unless otherwise stated in the relevant

specification.
6.4 Temperature

Unless otherwise stated in the relevant specification, the test temperature shall be the maximum

temperature of the operating temperature range specified in the relevant specification.

6.5 Humidity

Unless otherwise stated in the relevant specification, the test humidity shall be controlled at the

maximum humidity of the operating humidity range specified in the relevant specification.

6.6 Exposure time

The test exposure time shall be decided in consideration of the thermal capacity of the DUT.

For a small component whose weight is less than 0,1 kg, a test exposure time of 30 min is

recommended.
---------------------- Page: 11 ----------------------
– 10 – IEC 61300-2-14:2021 © IEC 2021
7 Details to be specified

The following details, as applicable, shall be specified in the relevant specification:

f) optical power;
g) wavelengths;
h) temperature;
i) humidity;
j) exposure time;

k) initial examinations, initial measurements and initial performance requirements;

l) examinations during test, measurements during test and performance requirements during

test;
m) final examinations, final measurements and final performance requirements;
n) deviations from test procedure;
o) additional pass/fail criteria;
p) number of ports and combinations of input and output ports;
q) combinations of multiple wavelengths which are input at the same time for
...

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