IEC 62343:2013

IEC 62343
®

Edition 1.0 2013-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Dynamic modules – General and guidance

Modules dynamiques – Généralités et lignes directrices

IEC 62343:2013-06(en-fr)

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IEC 62343

®


Edition 1.0 2013-06




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Dynamic modules – General and guidance



Modules dynamiques – Généralités et lignes directrices



















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.180.01; 33.180.99 ISBN 978-2-8322-2738-1



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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– 2 – IEC 62343:2013 © IEC 2013
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope and object . 7
2 Normative references . 7
3 Terms and definitions . 7
3.1 General terms . 8
3.2 Dynamic module terms . 8
3.3 Dynamic channel equalizer (DCE) terms . 8
3.4 Tuneable dispersion compensator (TDC) or dynamic chromatic dispersion
compensator (DCDC) terms . 10
3.5 Dynamic gain tilt equalizer (DGTE) terms . 10
3.6 Optical channel monitor (OCM) terms . 11
4 Abbreviations . 14
5 Preparation of standards . 15
5.1 General . 15
5.2 Product definition . 15
5.3 Tests . 15
5.4 Details . 15
5.5 Requirements . 15
5.6 Sample size . 15
5.7 Sample definition . 15
5.8 Groupings/sequences . 16
5.9 Pass/fail criteria . 16
5.10 Reference product definition . 16
5.11 Performance standard test report . 16
6 Electromagnetic compatibility (EMC) requirements . 16
Bibliography . 17

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IEC 62343:2013 © IEC 2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DYNAMIC MODULES –
GENERAL AND GUIDANCE

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
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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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 62343 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This bilingual version (2015-06) corresponds to the English version, published in 2013-06.
The text of this standard is based on the following documents:
CDV Report on voting
86C/1055/CDV 86C/1088/RVC

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.

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– 4 – IEC 62343:2013 © IEC 2013
A list of all the parts in the IEC 62343 series, published under the general title Dynamic
modules, can be found on the IEC website.
The structure of the IEC 62343 series, under the general title Dynamic modules, is as
follows:
• 62343-1 series Part 1: Performance standards
• 62343-2 Part 2: Reliability qualification
• 62343-3 Performance specification templates
• 62343-4 series Software and hardware interface standards
• 62343-5 series Test methods
• 62343-6 series Technical reports
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.

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IEC 62343:2013 © IEC 2013 – 5 –
INTRODUCTION
This International Standard applies to dynamic devices as defined in IEC/TS 62538. It
contains general guidance for the IEC 62343 series related to dynamic devices, and
definitions which apply to dynamic devices. The dynamic module, or device, has two
distinguishing characteristics: dynamic and module.
“Dynamic” highlights the functions of the products to include “tuning, varying, switching,
configuring, and other continuous optimization,” often accomplished by electronics, firmware,
software or their combinations. The dynamic device usually has a certain level of intelligence
to monitor or measure the situation and make decisions for necessary (optimization) actions.
The behaviour of dynamic modules may be characterized by transient characteristics as the
dynamic module undergoes tuning, switching, configuring and other continuous optimization.
Characterization of transient characteristics will be considered in individual dynamic module
standards.
“Module” defines that the products covered by the standard are the integration of active and
passive components (either or both), through interconnecting materials or devices. The
controlling electronics can be inside or outside the optical package (that contains all or most
of the optical components and interconnection). The product can look like a small printed
wiring board (PWB or child-board with mounted optical module) or a small box (housing) with
optical components and electronics enclosed. In the former case, it is more like an assembly
(generally not packaged in a box or housing) than a module (generally packaged in a box or
housing).
For historical reasons and convenience, a dynamic module or device is referred to as a
dynamic module in the IEC 62343-X series.
The number of dynamic modules and devices is rapidly growing as optical communications
networks evolve. The following list provides some examples of the products covered by the
IEC 62343-X series. It should be noted that the list is not exhaustive and the products to be
covered are not limited by the listed examples:
• channel gain equalizer;
• dynamic channel equalizer;
• dynamic gain tilt equalizer;
• dynamic slope equalizer;
• tuneable chromatic dispersion compensator;
• polarization mode dispersion compensator;
• reconfigurable optical add-drop multiplexer;
• switch with monitoring and controls;
• variable optical attenuator with monitoring and controls.
The IEC 62343 series will cover performance templates, performance standards, reliability
qualification requirements, hardware and software interfaces, and related testing methods.
A complete set of standards related to a dynamic module or device should include the
following:
• optical performance standards;
• reliability qualification standards;
• optical performance specification templates;
• hardware and software interface standards;
• test methods;

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– 6 – IEC 62343:2013 © IEC 2013
• technical reports.
The safety standards related to dynamic modules are mostly optical power considerations,
which are covered by IEC TC 76: Optical radiation safety and laser equipment.
Only those dynamic modules for which standards are complete or in preparation are included
in Clause 3. To reflect the rapidly growing market for dynamic modules, additional terms and
definitions will be added in subsequent revisions as the series expands.
It should be noted that optical amplifiers could be regarded as dynamic modules. They are not
included in the IEC 62343-X series, but are covered in their own series of IEC standards.

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IEC 62343:2013 © IEC 2013 – 7 –
DYNAMIC MODULES –
GENERAL AND GUIDANCE



1 Scope and object
This International Standard applies to all commercially available optical dynamic modules and
devices. It describes the products covered by the IEC 62343-X series, defines terminology,
fundamental considerations and basic approaches.
The object of this standard is to
• establish uniform requirements for operation, reliability and environmental properties of
DMs to be implemented in the appropriate DM standard,
• provide assistance to the purchaser in the selection of consistently high-quality DM
products for his particular applications, as well as in the consultation of the appropriate
specific DM standard(s).
This standard covers performance templates, performance standards, reliability qualification
requirements, hardware and software interfaces and related testing methods.
Since a dynamic module integrates an optical module/device, printed wiring board, and
software/firmware, the standards developed in the series will mimic appropriate existing
standards. On the other hand, since "dynamic module" is a relatively new product category,
the dynamic module standards series will not be bounded by the existing practices where
requirements differ.
The safety standards as related to dynamic modules are mostly optical power considerations,
which is covered by IEC TC 76: Optical radiation safety and laser equipment.
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 60050-731, International Electrotechnical Vocabulary – Chapter 731: Optical fibre
communication
IEC/TR 61931, Fibre optic – Terminology
IEC 62343-1 (all parts), Dynamic modules – Optical performance standards
IEC 62343-3 (all parts), Dynamic modules – Optical performance specification templates
IEC Guide 107, Electromagnetic compatibility – Guide to the drafting of electromagnetic
compatibility publications
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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– 8 – IEC 62343:2013 © IEC 2013
The definitions listed in this clause refer to the meaning of the terms used in the specifications
of DMs. Only those parameters listed in the appropriate performance standard in the
IEC 62343-1 series and performance specification templates in the IEC 62343-3 series are
intended to be specified.
The list of parameter definitions of DMs, given in this clause, is divided into subclauses by the
type of DM. See also IEC 60050-731and IEC/TR 61931.
3.1 General terms
3.1.1
optical dynamic device
optical device which is designed to monitor and control dynamically some characteristics of
one or more optical signals, by means of suitable electronic controls, in order to improve or to
maintain definite performances of the system in which it is intended to be inserted
Note 1 to entry: Said characteristics may include optical paths, optical intensities, spectral characteristics,
polarization states, dispersion, etc.
Note 2 to entry: Optical dynamic devices may comprise optical active and optical passive elements or
components.
Note 3 to entry: The control/response time of optical dynamic devices is much larger than the signal time
characteristics and typically may range from few microseconds to tens of seconds.
[SOURCE: IEC/TS 62538:2008, definition 2.1.1]
3.1.2
optical module
packaged integration of optical components and/or elements, accomplishing defined
functionality, typically repairable and re-workable
[SOURCE: IEC/TS 62538:2008, definition 2.2.5, modified – the Notes to entry in the source
have been omitted]
3.2 Dynamic module terms
The following definitions apply to all dynamic modules
3.2.1
operating wavelength range
specified range of wavelengths from λ to λ about a nominal operating wavelength λ ,
imin imax I
within which a dynamic optical module is designed to operate with a specified performance
3.2.2
channel frequency range
frequency range within which a device is expected to operate with a specified performance
Note 1 to entry: For a particular nominal channel central frequency, fnomi, this frequency range is from
f = (f - ∆f ) to f = (f + ∆f ), where ∆f is the maximum channel central frequency deviation.

imin nomi max imax nomi max max
3.2.3
channel spacing
centre-to-centre difference in frequency (or wavelength) between adjacent channels in a
device
3.3 Dynamic channel equalizer (DCE) terms
The following definitions apply to the dynamic channel equalizer

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IEC 62343:2013 © IEC 2013 – 9 –
3.3.1
dynamic channel equalizer
DCE
device capable of transforming, by internal or external automatic control, a multichannel input
signal with time-varying averaged powers into an output signal in which all working channel
powers are nominally equal or are set for a required level of pre-emphasis
Note 1 to entry: This device may also provide the extinction of one or more of the input channels.
[SOURCE: IEC 62343-3-1:2010, definition 3.5]
3.3.2
channel non-uniformity
difference between the powers of the channel with the most power (in dBm) and the channel
with the least power (in dBm)
Note 1 to entry: This applies to a multichannel signal across the operating wavelength range.
Note 2 to entry: Channel non-uniformity is expressed in dB.
[SOURCE: IEC 62343-3-1:2010, definition 3.2, modified – Additional information with respect
to applicability has been transferred to Note 1 to entry; Note 2 to entry is additional]
3.3.3
in-band extinction ratio
within the operating wavelength range, the difference between the minimum power of the non-
extinguished channels (in dBm) and the maximum power of the extinguished channels (in
dBm)
Note 1 to entry: In-band extinction ratio is expressed in dB.
[SOURCE: IEC 62343-3-1:2010, definition 3.6, modified – Information relating to the units
(dBm) now appears in the form of Note 1 to entry]
3.3.4
out-of-band attenuation
attenuation of channels that fall outside of the operating wavelength range
Note 1 to entry: Out-of-band attenuation is expressed in dB.
[SOURCE: IEC 62343-3-1:2010, definition 3.8, modified – Information relating to the units
(dB) now appears in the form of Note 1 to entry]
3.3.5
ripple
peak-to-peak difference in insertion loss within a channel frequency (or wavelength) range
[SOURCE: IEC 62343-3-1:2010, definition 3.9]
3.3.6
channel response time
elapsed time it takes a device to transform a channel from a specified initial power level to a
specified final power level desired state, when the resulting output channel non-uniformity
tolerance is met, measured from the time the actuation energy is applied or removed
[SOURCE: IEC 62343-3-1:2010, definition 3.3]

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– 10 – IEC 62343:2013 © IEC 2013
3.4 Tuneable dispersion compensator (TDC) or dynamic chromatic dispersion
compensator (DCDC) terms
The following definitions apply to the tuneable dispersion compensator (TDC) or dynamic
chromatic dispersion compensator (DCDC)
3.4.1
tuneable dispersion compensator
dynamic chromatic dispersion compensator
TDC (DCDC)
two-port in-line device that is capable of transforming, by internal or external automatic
control, an input signal with time-varying dispersion into an output signal in which an output
channel dispersion value is set for a required level of value
3.4.2
insertion loss ripple
maximum peak-to-peak variation of the insertion loss within a channel frequency (or
wavelength) range
3.4.3
dispersion tuning time
longest elapsed time it takes a module to change a dispersion setting from an arbitrary initial
dispersion value to a desired final dispersion value, when the resulting dispersion target
tolerance is met
3.5 Dynamic gain tilt equalizer (DGTE) terms
The following definitions apply to the dynamic gain tilt equalizer (DGTE)
3.5.1
dynamic spectral equalizer
DSE
two port in-line dynamic module that converts an input signal with time-varying spectral shape
into an output signal in which spectral shape is nominally flat, or is set for a required spectral
shape for pre-emphasis
3.5.2
dynamic gain tilt equalizer
DGTE
dynamic spectral equalizer used in an optical amplifier that converts input signals with time-
varying gain tilt into output signals in which gain tilt is nominally flat, or is set for a required
gain tilt
3.5.3
dynamic gain tilt range
difference between the maximum and minimum deviation of attenuation over operating
wavelength range, to which the dynamic gain tilt equalizer can be set
3.5.4
positive slope type
type of DGTE for which dynamic gain tilt range can be set for positive gain tilt
3.5.5
negative slope type
type of DGTE for which dynamic gain tilt range can be set for negative gain tilt

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IEC 62343:2013 © IEC 2013 – 11 –
3.5.6
both slope type
type of DGTE to which dynamic gain tilt range can be set for both positive and negative gain
tilt
3.5.7
slope linearity
maximum deviation of attenuation between the spectral shape by dynamic gain tilt equalizer
and linear slope over the operating wavelength range
3.5.8
response time
longest elapsed time it takes a dynamic gain tilt equalizer to change a gain tilt setting from an
arbitrary initial gain tilt value to a desired final gain tilt value, when the resulting gain tilt target
tolerance is met
3.6 Optical channel monitor (OCM) terms
The following definitions apply to the optical channel monitor (OCM)
3.6.1
input channel plan
entire set of ITU channels on which the optical channel monitor is reporting
3.6.2
input channel frequency spacing tolerance
centre-to-centre difference in frequency (or wavelength) between adjacent channels in a
device
3.6.3
input channel power dynamic range
full range of input power per channel between the saturation and sensitivity limits
3.6.4
input channel non-uniformity
difference (in dB) between the powers of the channel with the most power (in dBm) and the
channel with the least power (in dBm) during one measurement within the response time
Note 1 to entry: This applies to a multichannel signal across the operating wavelength range.
3.6.5
input adjacent channel non-uniformity
difference between the powers of adjacent channels present during one measurement within
the response time
Note 1 to entry: This applies to a multichannel signal across the operating wavelength range.
Note 2 to entry: In-band extinction ratio is expressed in dB.
3.6.6
input channel non-uniformity for channel identification
difference between the powers of the channel with the most power and the channel with the
least power during one measurement within the response time for positively identifying all
channels present and not falsely identifying channels that
...