IEC 60869-1:2012

Fibre optic interconnecting devices and passive components - Fibre optic passive power control devices - Part 1: Generic specification

IEC 60869-1:2012 applies to fibre optic power control devices. These have all of the following general features:
- they are passive in that they contain no opto-electronic or other transducing elements;
- they have two ports for the transmission of optical power and control the transmitted power in a fixed or variable fashion;
- the ports are unconnectorized optical fibre tails or optical fibre pigtails with connectors. This standard establishes generic requirements for the following passive optical devices:
- optical attenuator;
- optical fuse;
- optical power limiter. This fourth edition cancels and replaces the third edition, published in 1999, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the terms and definitions were reconsidered;
- the requirement concerning the IEC Quality Assessment System was reconsidered;
- the clause concerning quality assessment procedures was deleted. Keywords: fibre optic power control devices

Dispositifs d'interconnexion et composants passifs à fibres optiques - Dispositifs à fibres optiques passifs de contrôle de la puissance - Partie 1: Spécification générique

La CEI 60869-1:2012 s'applique aux dispositifs de contrôle de la puissance à fibres optiques. Ceux-ci présentent toutes les caractéristiques générales suivantes:
- ils sont passifs dans le sens où ils ne contiennent aucun élément optoélectronique ou autre élément transducteur;
- ils disposent de deux ports pour la transmission de la puissance optique et ils contrôlent l'énergie transmise de manière fixe ou variable;
- les ports sont des fibres amorces non-connectorisées ou des fibres amorces à fibres optiques avec connecteurs. La présente norme établit les exigences génériques pour les dispositifs optiques passifs suivants:
- affaiblisseur optique;
- fusible optique limiteur de puissance optique. Cette quatrième édition annule et remplace la troisième édition, parue en 1999, et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- les termes et définitions ont été revus;
- l'exigence concernant le système CEI d'assurance de la qualité a été revue;
- l'article concernant les procédures d'assurance de la qualité a été supprimé. Mots clés: dispositifs de contrôle de la puissance à fibres optiques

General Information

• Status: Published
• Publication Date: 11-Dec-2012
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Drafting Committee: WG 7 - TC 86/SC 86B/WG 7
• Current Stage: DELPUB - Deleted Publication
• Start Date: 30-Jun-2017
• Completion Date: 16-Nov-2018

Relations

• Revised: IEC 60869-1:2018 - Fibre optic interconnecting devices and passive components - Fibre optic passive power control devices - Part 1: Generic specification
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60869-1


®


Edition 4.0 2012-12



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
colour
inside


Fibre optic interconecting devices and passive components – Fibre optic
passive power control devices –
Part 1: Generic specification

Dispositifs d’interconnexion et composants passifs à fibres optiques –
Dispositifs à fibres optiques passifs de contrôle de la puissance –
Partie 1: Spécification générique


IEC 60869-1:2012

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IEC 60869-1



®



Edition 4.0 2012-12







INTERNATIONAL





STANDARD







NORME



INTERNATIONALE
colour

inside










Fibre optic interconecting devices and passive components – Fibre optic

passive power control devices –

Part 1: Generic specification




Dispositifs d’interconnexion et composants passifs à fibres optiques –

Dispositifs à fibres optiques passifs de contrôle de la puissance –


Partie 1: Spécification générique















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX V


ICS 33.180.20 ISBN 978-2-83220-544-0



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

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CONTENTS

FOREWORD . 4


1 Scope . 6

2 Normative references . 6

3 Terms and definitions . 7


3.1 Basic terms . 7

3.2 Component terms . 7

3.3 Performance terms . 8

4 Description of devices . 9
4.1 Optical attenuator . 9
4.2 Variable optical attenuator (VOA) . 10
4.3 Optical fuse . 10
4.4 Optical power limiter . 10
5 Requirements . 11
5.1 Classification . 11
5.1.1 General . 11
5.1.2 Type . 11
5.1.3 Wavelength band . 12
5.1.4 Style . 12
5.1.5 Variant. 13
5.1.6 Assessment level . 13
5.1.7 Normative reference extensions . 13
5.2 Documentation . 14
5.2.1 Symbols . 14
5.2.2 Specification system . 14
5.2.3 Drawings . 16
5.2.4 Tests and measurements . 16
5.2.5 Test data sheets . 16
5.2.6 Instructions for use . 17
5.3 Standardization system . 17
5.3.1 Interface standards . 17
5.3.2 Performance standards . 17
5.3.3 Reliability standards . 18

5.3.4 Interlinking. 18
5.4 Design and construction . 20
5.4.1 Materials . 20
5.4.2 Workmanship . 20
5.5 Quality . 20
5.6 Performance . 20
5.7 Identification and marking . 20
5.7.1 General . 20
5.7.2 Variant identification number . 20
5.7.3 Component marking. 20
5.7.4 Package marking . 21
5.8 Packaging . 21
5.9 Storage conditions. 21
5.10 Safety. 21

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60869-1 © IEC:2012 – 3 –


Annex A (informative) Optical fuse configuration and performance examples . 22

Annex B (informative) Optical fuse application notes . 24


Annex C (informative) Optical power limiter configuration and performance examples . 25

Annex D (informative) Optical power limiter application notes . 28

Annex E (informative) Fixed optical attenuator application note . 30


Annex F (informative) Variable, manual or electrical optical attenuator application note . 31

Bibliography . 33




Figure 1 – Optical attenuator operation curve . 9
Figure 2 – Optical fuse operation curve . 10
Figure 3 – Optical power limiter operation curve . 11
Figure 4 – Configuration A . 12
Figure 5 – Configuration B . 12
Figure 6 – Configuration C . 12
Figure 7 – Standardization structure . 19
Figure A.1 – Optical fuse, pigtail style . 22
Figure A.2 – Optical fuse, plug style (LC plug) . 22
Figure A.3 – Response time curve of an optical fuse . 23
Figure A.4 – Optical fuse, power threshold ~30 dBm (1W), output power drop at
threshold ~25 dB . 23
Figure B.1 – Optical fuse . 24
Figure C.1 – Optical power limiter, pigtail style . 25
Figure C.2 – Optical power limiter, plug style (LC plug) . 25
Figure C.3 – Optical power limiter – Experimental . 26
Figure C.4 – Schematic optical power limiter response time . 26
Figure C.5 – Schematic power definitions . 27
Figure C.6 – Optical power limiter, input power definitions . 27
Figure D.1 – Optical power limiter and optical fuse, combined, operation curve . 29
Figure E.1 – Fixed optical attenuator . 30
Figure F.1 – The variable, manual or electrical, optical attenuator . 32


Table 1 – Three-level IEC specification structure . 15
Table 2 – Standards interlink matrix . 19

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INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________




FIBRE OPTIC INTERCONECTING DEVICES

AND PASSIVE COMPONENTS –

FIBRE OPTIC PASSIVE POWER CONTROL DEVICES –



Part 1: Generic specification


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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6) All users should ensure that they have the latest edition of this publication.
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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 60869-1 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC TC 86: Fibre optics.
This fourth edition cancels and replaces the third edition, published in 1999, and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– the terms and definitions were reconsidered;
– the requirement concerning the IEC Quality Assessment System was reconsidered;
– the clause concerning quality assessment procedures was deleted.

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60869-1 © IEC:2012 – 5 –


The text of this standard is based on the following documents:


FDIS Report on voting

86B/3505/FDIS 86B/3551/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 the parts in the IEC 60869 series, under the general title Fibre optic
interconnecting devices and passive components – Fibre optic passive power control devices,
can be found on the IEC website.
Future standards will carry the new general title as cited above.
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.

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FIBRE OPTIC INTERCONECTING DEVICES

AND PASSIVE COMPONENTS –

FIBRE OPTIC PASSIVE POWER CONTROL DEVICES –



Part 1: Generic specification








1 Scope

This part of IEC 60869 applies to fibre optic power control devices. These have all of the
following general features:
– they are passive in that they contain no opto-electronic or other transducing elements;
– they have two ports for the transmission of optical power and control the transmitted
power in a fixed or variable fashion;
– the ports are unconnectorized optical fibre tails or optical fibre pigtails with connectors.
This standard establishes generic requirements for the following passive optical devices:
– optical attenuator;
– optical fuse;
– optical power limiter.
Test and measurement procedures for the above products are described in IEC 61300-1, the
1
IEC 61300-2 series and the 61300-3 series [1,2,3] .
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 60027, Letter symbols to be used in electrical technology
IEC 60050-731, International Electrotechnical Vocabulary – Chapter 731: Optical fibre
communication

IEC 60617, Graphical symbols for diagrams. Available from
IEC 60695-11-5, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method –
Apparatus, confirmatory test arrangement and guidance
IEC 60825 (all parts), Safety of laser products
ISO 129, Technical drawings – Indication of dimensions and tolerances
ISO 286-1, Geometrical product specifications (GPS) – ISO coding system for tolerances of
linear sizes – Part 1: Bases of tolerances and fits
—————————
1
 References in square brackets refer to the Bibliography.

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60869-1 © IEC:2012 – 7 –


ISO 1101, Geometrical product specifications (GPS) – Geometrical tolerancing – Tolerances

of form, orientation, location and run-out


ISO 8601, Data elements and interchange formats – Information interchange –

Representation of dates and times



3 Terms and definitions


For the purposes of this document, the definitions given in IEC 60050-731 as well as the

following apply.

NOTE Definitions are given in three sub-groups; basic terms, component terms and performance terms.
3.1 Basic terms
3.1.1
insertion loss
reduction in optical power between an input and output port of a passive device, intended to
be transparent, expressed in decibel
Note 1 to entry: This is defined as follows:
IL = –10 log (P /P )= 10 log (P /P )
10 1 0 10 0 1
where P is the optical power launched into the input port, and P the optical power received from the output port.
0
1
3.1.2
operating wavelength
nominal wavelength λ at which a passive device is designed to operate with the specified
performance
3.1.3
operating wavelength range –passband
specified range of wavelengths from λ to λ about a nominal operating wavelength λ ,
i min i max i
within which an optical passive device is designed to operate with the specified performance
3.1.4
return loss
fraction of optical input power that is returned from the port of a passive device
Note 1 to entry: This is defined as follows:
RL = –10 log (P /P )= 10 log (P / P )
1
10 0 10 0 1

where P is the optical power launched into the port, and P the optical power received back from the same port.
0 1
3.2 Component terms
3.2.1
optical attenuator
passive device, which produces a controlled signal attenuation in an optical fibre transmission
line. An attenuator is intended to be wavelength independent
3.2.2
variable optical attenuator
VOA
optically passive device, an attenuator that regulates the optical power in fibres, producing a
controlled, optical output power, as a result of manual or electrical control input

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3.2.3

optical fuse

passive device, which produces a controlled, permanent, signal blocking at a predetermined

power threshold in an optical fibre transmission line


3.2.4

optical power limiter

passive device that regulates the optical power in fibres, producing a controlled, constant

optical output power P , as a result of varying optical input power higher than P , and has
limit limit

no influence at optical powers below P
limit


3.2.5
plug style device
device having a combination of two interfacing features, a plug on one end and a socket on
the other
3.2.6
adaptor style device
device having a combination of two sockets as interfacing features
3.3 Performance terms
3.3.1
optical fuse power threshold
optical input power, into an optical fuse, in which the optical output power is blocked
Note 1 to entry: The optical fuse power threshold P is expressed in Watt or dBm.
th
3.3.2
optical fuse response time
total time when the optical fuse output power level is higher than the optical fuse power
threshold by 1 dB, staring when the rising power passes the power fuse power threshold plus
1 dB and ending when the declining power passes the fuse power threshold plus 1 dB on its
way down
3.3.3
optical fuse blocking attenuation at threshold
drop of optical power through the optical fuse when exposed to more than the optical fuse
power threshold P , and responds by blocking the power, expressed in dB
th
3.3.4
optical power limiter response time

total time where the optical power limiter output power level is higher than limit power + 1 dB,
staring when the rising power passes the limit power plus 1 dB and ending when the declining
power passes the limit power plus 1 dB on its way down
3.3.5
optical limit power
optical input power, into an optical power limiter, in which the optical output power is latched
and cannot exceed this value. The optical limit power P is expressed in Watt or dBm
limit
3.3.6
minimum insertion loss
term applicable only to variable optical attenuators, (VOAs); it is the lowest insertion loss to
which the device may be adjusted
3.3.7
variable attenuation range
range of insertion loss to which the device may be adjusted

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60869-1 © IEC:2012 – 9 –


Note 1 to entry: This term is applicable only to VOAs.


3.3.8

insertion loss setting resolution
minimal adjustable step size or difference of the insertion loss of the device


Note 1 to entry: This term is applicable only to VOAs.


3.3.9

accuracy of setting value of attenuation

difference between the insertion loss of the device at a given setting and the manually or

electrically nominal adjusted value of the insertion loss

Note 1 to entry: This term is applicable only to VOAs.
3.3.10
repeatability of setting attenuation value
difference between the insertion loss of the device at a given setting and the value of the
insertion loss in previous same settings
Note 1 to entry: This term is applicable only to VOAs.
3.3.11
maximum allowed power input
maximum input power that the device can handle without causing dysfunction or permanent
damage, expressed in Watt or dBm
Note 1 to entry: This term is applicable to all passive power control devices.
4 Description of devices
4.1 Optical attenuator
The optical attenuator is a passive device used for optical power reduction into or out of an
optical device. The optical attenuator is normally used for a broad range of wavelengths,
attenuating the power at a predetermined level.
The performance curve of an optical attenuator is shown in Figure 1, where the attenuated
power is always lower than the non-attenuated power and proportional to it.

Non-attenuated
Optical power input = output
output

power
Attenuated power

Optical input power
IEC  2314/12

Figure 1 – Optical attenuator operation curve

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4.2 Variable optical attenuator (VOA)


The performance curve of a VOA is similar to Figure 1 of an attenuator, where the attenuated

power is always lower than the non-attenuated power and proportional to it. The VOA

produces a controlled, optical output power, as a result of manual or electrical control input.

The VOA is a passive device used for optical power reduction into or out of an optical device.
The optical attenuator is normally used for a broad range of wavelengths, attenuating the

power at a pre-adjusted level.


4.3 Optical fuse


The optical fuse (see Figure 2) is a passive device, designed to protect equipment and fibre

cables from damage due to optical overpower, spikes and surges
...