IEC 62343-3-1:2010

IEC 62343-3-1
®
Edition 1.0 2010-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Dynamic modules –
Part 3-1: Performance specification templates – Dynamic channel equalizers

Modules dynamiques –
Partie 3-1: Modèles de spécification de performance – Egaliseurs de canaux
de transmission dynamiques

IEC 62343-3-1:2010

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IEC 62343-3-1
®
Edition 1.0 2010-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Dynamic modules –
Part 3-1: Performance specification templates – Dynamic channel equalizers

Modules dynamiques –
Partie 3-1: Modèles de spécification de performance – Egaliseurs de canaux
de transmission dynamiques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
L
CODE PRIX
ICS 33.180.20 ISBN 978-2-88910-678-3
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 62343-3-1 © IEC:2010
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Terms and definitions .6
4 Test report.7
5 Reference components.8
6 Performance requirements .8
6.1 Dimensions .8
6.2 Sample size .8
6.3 Test details and requirements .8
Bibliography.10

Table 1 – Tests and requirements.8

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62343-3-1 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DYNAMIC MODULES –

Part 3-1: Performance specification templates –
Dynamic channel equalizers


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,
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Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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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 62343-3-1 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
CDV Report on voting
86C/901/CDV 86C/951/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 62343 series, under the general title Dynamic modules, can be found
on the IEC website.

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– 4 – 62343-3-1 © IEC:2010
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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62343-3-1 © IEC:2010 – 5 –
INTRODUCTION
A dynamic channel equaliser (DCE) is used to compensate and equalize the variations in
channel power spectrum as the optical channels propagate through DWDM networks. A
typical DCE module is an electrically controlled two port device, which controls the time
varying power levels of multichannel input signals such that at the output channel powers are
nominally equalised.

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– 6 – 62343-3-1 © IEC:2010
DYNAMIC MODULES –

Part 3-1: Performance specification templates –
Dynamic channel equalizers



1 Scope
This part of IEC 62343 provides a performance specification template for the dynamic channel
equaliser (DCE). The object of this performance specification template is to provide a frame
for the preparation of detail specifications on the performances of dynamic channel
equalisers.
Additional specification parameters may be included for detailed product specifications or
performance specifications. However, specification parameters specified in this standard
should not be removed from the detail product specifications or performance specifications.
The technical information regarding dynamic channel equalisers, and their applications in
1
DWDM systems are described in future IEC/TR 62343-6-1 .
2 Normative references
The following referenced documents are indispensable for the application 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 61300-3-2, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-2: Examinations and measurements – Polarization
dependent loss in a single-mode fibre optic device
IEC 61300-3-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-4: Examinations and measurements – Attenuation
IEC 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-32, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-32: Examinations and measurements – Polarization
mode dispersion measurement for passive optical components
IEC 61753-021-2: Fibre optic interconnecting devices and passive components performance
standard – Part 021-2: Grade C/3 single-mode fibre optic connectors for category C –
Controlled environment
ITU-T Recommendation G.694.1: Spectral grids for WDM applications: DWDM frequency grid
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
___________
1
 Under consideration.

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62343-3-1 © IEC:2010 – 7 –
3.1
channel frequency range
frequency range within which a device is expected to operate with a specified performance.
For a particular nominal channel central frequency, f , this frequency range is from f =
nomi imin
(f - Δf ) to f = (f + Δf ), where Δf is the maximum channel central frequency

nomi max imax nomi max max
deviation
3.2
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). This applies to a multichannel signal across the
operating wavelength range
3.3
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
3.4
channel spacing
centre-to-centre difference in frequency (or wavelength) between adjacent channels in a
device
3.5
dynamic channel equalizer
DCE
device that is 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 This device may also provide the extinction of one or more of the input channels.
3.6
in-band extinction ratio
within the operating wavelength range, the difference (in dB) between the minimum power of
the non-extinguished channels (in dBm) and the maximum power of the extinguished
channels (in dBm)
3.7
operating wavelength range
specified interval of wavelengths around the operating wavelength within which an optical
component is designed to operate with the specified performance
3.8
out-of-band attenuation
attenuation (in dB) of channels that fall outside of the operating wavelength range
3.9
ripple
peak-to-peak difference in insertion loss within a channel frequency (or wavelength) range
4 Test report
Fully documented test reports and supporting evidence shall be prepared and be available for
inspections as evidence that the tests have been carried out and complied with.

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5 Reference components
The testing for these components does not require the use of reference components.
6 Performance requirements
6.1 Dimensions
Dimensions shall comply with either an appropriate IEC interface standard or with those given
in the manufacturer's drawings, where the IEC interface standard does not exist or cannot be
used.
6.2 Sample size
The test sample size and sequencing requirements for the module components shall be
defined in the relevant specification.
6.3 Test details and requirements
The requirements are given only for non-connectorized DCE devices. For connectorized
components, the connector performances shall be in compliance with IEC 61753-021-2.
A minimum length of fibre or cable of 1,5 m per port shall be included in all climatic and
environmental tests.
The channel spacings, unless otherwise specified, shall be in accordance with
ITU-T Recommendation G.694-1. Environmental test shall be measured for a single
input/output port combination.
The test details and requirements for performance standard category C are shown in Table 1.
Table 1 – Tests and requirements
No. Test parameters Unit Details
1 Insertion loss dB IEC 61300-3-4
Over the operating wavelength Source: The source shall be tuneable
range over the operating wavelength range and
shall have a spectral width of ≤1 GHz
The source stability shall be ≤0,25 GHz
The source output shall be unpolarised
Detector: The linearity of the detector
shall be within ± 0,05 dB
The spectral response shall be matched
to the source
The dynamic range shall be consistent
with the attenuation values to be
measured
The maximum attenuation value specified
applies to any combination of input/output
ports
2 In band extinction ratio dB Method under consideration
3 Out of band attenuation dB Method under consideration

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62343-3-1 © IEC:2010 – 9 –
No. Test parameters Unit Details
4 Return loss dB IEC 61300-3-6
(branching device method)
Class W Branching device: The nominal splitting
ratio shall be 50/50
The directivity shall be ≥60 d B
Source: The central wavelength shall be
1 550 nm ± 20 nm
The power stability of the light source
shall be better than ± 0,05 dB over the
measuring period
Detector: The linearity of the detector
shall be within ± 0,05 dB
The detector sensitivity shall be
<-80 dBm
All ports not under test shall be
terminated to avoid unwanted back
reflections contributing to the
measurement
5 Polarization dependent dB IEC 61300-3-2, Method 1
loss
Other details shall be the same as in test
no. 1
The polarization dependant loss shall be
measured between any input/output port
combination
6 Polarization mode ps IEC 61300-3-32
dispersion
Other details shall be the same as in test
no. 1
The polarization mode dispersion shall be
m
...