IEC 62343-3-4:2018

Dynamic modules - Part 3-4: Performance specification templates - Multicast optical switches

IEC 62343-3-4: 2018 provides a performance specification template for multicast optical switches. The object is to provide a framework for the preparation of performance specifications or product specifications of multicast optical switches. Specification parameters required in this document are considered as essential in the product specifications or performance specifications.
Keywords: multicast optical switch (MCOS)

Modules dynamiques - Partie 3-4: Modèles de spécification de performance - Commutateurs optiques multidiffusions

IEC 62343-3-4:2018 donne un modèle de spécification de performance pour les commutateurs optiques multidiffusions. L'objet de la présente norme est de fournir un cadre pour la préparation des spécifications de performance ou des spécifications de produit applicables aux commutateurs optiques multidiffusions. Les paramètres de spécification exigés dans le présent document sont jugés comme étant essentiels dans les spécifications de performance ou les spécifications de produit.
Mots clés: commutateur optique multidiffusion MCOS)

General Information

• Status: Published
• Publication Date: 26-Apr-2018
• ICS: 33.180.01 - Fibre optic systems in general
• ICS: 33.180.99 - Other fibre optic equipment
• Technical Committee: SC 86C - Fibre optic systems, sensing and active devices
• Drafting Committee: WG 5 - TC 86/SC 86C/WG 5
• Current Stage: PPUB - Publication issued
• Start Date: 27-Apr-2018
• Completion Date: 04-May-2018

Overview

IEC 62343-3-4:2018 is an international standard published by the International Electrotechnical Commission (IEC) that provides a performance specification template for multicast optical switches (MCOS). These dynamic modules play a crucial role in reconfigurable optical add-drop multiplexer (ROADM) systems by enabling colourless, directionless, and contentionless (CDC) capabilities in optical networks. This standard establishes a framework for manufacturers and users to prepare thorough performance and product specifications that address critical parameters related to the functionality and quality of MCOS devices.

Key Topics

The standard focuses on defining and harmonizing essential performance parameters and testing methods for multicast optical switches, ensuring consistency and interoperability in fiber optic communication systems. Key topics covered include:

• Multicast Optical Switch (MCOS) Fundamentals: Defines MCOS as a dynamic module with an N×M port configuration, combining 1×M non-wavelength selective branching devices and N×1 optical switches under a single control interface.
• Performance Specification Templates: Detailed templates are provided for characterizing general, optical, electrical, communication, and mechanical performance metrics for MCOS devices.
• Parameters Addressed:
  • Insertion loss differences at N and M ports
  • Crosstalk and cumulative crosstalk between input/output ports
  • Switching time, latency, rise and fall times, and bounce time
  • Electromagnetic compatibility (EMC) requirements
• Test Methods and Normative References: The standard relies on related IEC test procedures such as IEC 61300 series for fiber optic interconnecting devices and IEC 62343 parts addressing dynamic modules performance.

Figures and tables embedded in the document illustrate the MCOS functional block diagram and measurement time intervals, supporting clear understanding of test procedures.

Applications

IEC 62343-3-4:2018 provides critical guidance to equipment manufacturers, network operators, and system integrators involved in dense wavelength division multiplexing (DWDM) and advanced optical networking. By applying this standard, stakeholders can:

• Develop robust and interoperable multicast optical switches that meet industry expectations for performance and reliability.
• Ensure consistent quality control and specification compliance in the fabrication and evaluation of MCOS components.
• Facilitate the deployment of dynamic add-drop multiplexers capable of CDC functionality, enhancing network flexibility and scalability.
• Optimize performance in optical transport networks requiring dynamic routing and switching of multiple wavelength signals.

This standard supports the broader ecosystem of optical communications by aligning performance criteria, thus reducing integration risks and promoting innovation.

Related Standards

IEC 62343-3-4:2018 is part of the broader IEC 62343 series on dynamic modules, which address various optical components in telecommunication systems. Relevant related documents include:

• IEC 62343-1:2016 – General performance standards and test conditions for dynamic modules.
• IEC 62343-5-2 – Test methods for 1×N fixed-grid wavelength selective switches (WSS), including dynamic crosstalk measurements.
• Various parts of the IEC 61300 series, detailing test methods for fiber optic interconnecting devices, such as insertion loss, return loss, polarization dependent loss, switching time, crosstalk, and dispersion measurements.

These complementary standards provide a structured approach to specifying, testing, and validating the wide range of performance parameters that impact optical module functionality.

---

By utilizing IEC 62343-3-4:2018, professionals can effectively specify and assess multicast optical switches to meet modern optical network demands, leveraging a harmonized international standard designed to promote quality, interoperability, and innovation in fiber optic communications.

Standards Content (Sample)

IEC 62343-3-4 ®
Edition 1.0 2018-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dynamic modules –
Part 3-4: Performance specification templates – Multicast optical switches

Modules dynamiques –
Partie 3-4: Modèles de spécification de performance – Commutateurs optiques
multidiffusions
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IEC 62343-3-4 ®
Edition 1.0 2018-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Dynamic modules –
Part 3-4: Performance specification templates – Multicast optical switches

Modules dynamiques –
Partie 3-4: Modèles de spécification de performance – Commutateurs optiques

multidiffusions
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.01; 33.180.99 ISBN 978-2-8322-5612-1

– 2 – IEC 62343-3-4:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Performance specification templates . 14
5 Electromagnetic compatibility (EMC) requirements . 18
Bibliography . 19

Figure 1 – Functional block diagram of the MCOS . 8
Figure 2 – Representation of latency time, rise time, fall time, bounce time, and
switching time . 13

Table 1 – General performance specification template for MCOS . 14
Table 2 – Optical performance specification template for MCOS . 15
Table 3 – Electrical and communication performance specification template for MCOS . 17
Table 4 – Mechanical performance specification template for MCOS . 18

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DYNAMIC MODULES –
Part 3-4: Performance specification templates –
Multicast optical switches
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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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 62343-3-4 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
The text of this International Standard is based on the following documents:
FDIS Report on voting
86C/1506/FDIS 86C/1508/RVD
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.

– 4 – IEC 62343-3-4:2018 © IEC 2018
A list of all parts in the IEC 62343 series, published under the general title Dynamic modules,
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.
INTRODUCTION
A multicast optical switch (MCOS) is a dynamic module (DM), which is mainly used in a
reconfigurable optical add-drop multiplexer (ROADM) system to realize colourless,
directionless and contentionless (CDC) function. A multicast optical switch functions as an
optical switch and a non-wavelength selective fibre optic branching devices. The technical
information regarding multicast optical switches and their applications in dense wavelength
division multiplexing (DWDM) systems is described in IEC TR 62343-6-4.

– 6 – IEC 62343-3-4:2018 © IEC 2018
DYNAMIC MODULES –
Part 3-4: Performance specification templates –
Multicast optical switches
1 Scope
This part of IEC 62343 provides a performance specification template for multicast optical
switches. The object is to provide a framework for the preparation of performance
specifications or product specifications of multicast optical switches.
Specification parameters required in this document are considered as essential in the product
specifications or performance specifications.
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 61290-7-1, Optical amplifiers – Test methods – Part 7-1: Out-of-band insertion losses –
Filtered optical power meter method
IEC 61300-2-14, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-14: Tests – High optical power
IEC 61300-3-2, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-2: Examination and measurements – Polarization
dependent loss in a single-mode fibre optic device
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 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-7, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-7: Examinations and measurements – Wavelength
dependence of attenuation and return loss of single mode components
IEC 61300-3-20, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-20: Examinations and measurements – Directivity of
fibre optic branching devices
IEC 61300-3-21, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-21: Examinations and measurements – Switching time
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 61300-3-38, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-38: Examinations and measurements – Group delay,
chromatic dispersion and phase ripple
IEC 61300-3-50, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-50: Examinations and measurements – Crosstalk for
optical spatial switches
IEC 62343-1:2016, Dynamic modules – Part 1: Performance standards – General conditions
IEC 62343-5-2, Dynamic modules – Part 5-2: Test methods – 1 x N fixed-grid WSS – Dynamic
crosstalk measurement
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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
3.1
multicast optical switch
MCOS
dynamic module, which has port configuration of N × M, including N of 1 × M non-wavelength
selective branching devices and M of N × 1 optical switches
Note 1 to entry: N ≥ 2 and M ≥ 2, in general.
Note 2 to entry: Generally, for the N port side, an add/drop functional block is connected; for the M port side, a
transponder functional block is connected. If required, a tuneable optical filter functional block is connected
between this module and the transponder functional block.
Note 3 to entry: The MCOS has electrical interface to control switches.
Note 4 to entry: Non-blocking switches are employed for the N × 1 optical switch element of the MCOS.
Note 5 to entry: A general function block diagram is shown in Figure 1. It consists primarily of two optical blocks.
Block 1 is prepared for the drop signal and Block 2 for the add signal.
Note 6 to entry: Generally, this module works optically in both directions: N side to M side, and M side to N side.
Note 7 to entry: Generally, block state of the MCOS module is supported for each side port by the block state for
N × 1 optical element or by similar technology.
Note 8 to entry: This comment applies to the French language only.

– 8 – IEC 62343-3-4:2018 © IEC 2018
N ports N ports
Electrical
I/F
Electronic
1 × M 1 × M 1 × M 1 × M 1 × M 1 × M 1 × M 1 × M
controller
N × 1 N × 1 N × 1 N × 1 N × 1 N × 1 N × 1 N × 1
M ports M ports
Block 1 for drop signal from ROADM Block 2 for add signal to ROADM
Key
1 × M 1 × M optical branching device
N × 1 N × 1 optical switch
IEC
Figure 1 – Functional block diagram of the MCOS
3.2
N side insertion loss difference between different ports
IL
diffN
difference between the maximum and minimum insertion loss at an N side port for a specified
set of an M side port
3.3
M side insertion loss difference between different ports
IL
diffM
difference between the maximum and minimum insertion loss at an M side port for a specified
set of an N side port
3.4
crosstalk
ratio of the output power of the isolated input port to the output power of the conducting input
port for an output port
3.5
cumulative crosstalk
ratio of the output power between signal power from the conducting input port and the
cumulative signal power from all of the relevant isolated input port
Note 1 to entry: Assume output port k has relevant input port 1, 2, 3, …N, and the conductive port pair is only port
i to port k, and the other input ports are in a non-conductive state to output port k. The same optical input power is
applied to all input ports. The output power appearing in port k from port i is expressed as P . With this condition,
i
cumulative crosstalk is calculated as:

N
 
P
∑ j≠i j
 
− 10log
 
P
i
 
where
P is the optical power measured at output port k from conductive port i;
P is the optical power measured at output port k from isolated port j.

j
Note 2 to entry: Generally, cumulative crosstalk has different values for different signal directions: N side to M
side, and M side to N side in an N x M module.
Note 3 to entry: Defined in optical signal with averaged polarization and the same wavelength.
3.6
dynamic crosstalk
crosstalk that is attributed to both channel crosstalk (due to same wavelength and/or other
wavelengths) and port isolation, predicted to change during switching operation in MCOS
module
Note 1 to entry: Hitless operation means that there is no influence on other performance during the switching
operation.
[SOURCE: IEC 62343-3-3:2014, 3.15, modified – The term "transient crosstalk" has been
replaced by "dynamic crosstalk", and the abbreviated term "WSS" has been replaced by
"MCOS" in the definition.]
3.7
latency time
t
l
elapsed time for the output power of a
specified output port to reach 10 % of its steady-state value from the time the actuation
energy is applied, when switching from an isolated state to conducting state, normally-off for a
non-latching switch, or a latching switch
Note 1 to entry: See Figure 2.
[SOURCE: IEC 60876-1:2014, 3.3.5.1]
3.8
latency time
t '
l

elapsed time for the output power of a specified output port to reach 90 % of its steady-state
value from the time the actuation energy is removed, when switching from a conducting state
to isolated state, normally-off for a non-latching switch
Note 1 to entry: See Figure 2.
[SOURCE: IEC 60876-1:2014, 3.3.5.2]
3.9
latency time
t '
l
elapsed time when
the output power of a specified output port reaches 90 % of its steady-state value from the
time the actuation energy is applied, when switching from a conducting state to isolated state,
for a latching switch
Note 1 to entry: See Figure 2.
[SOURCE: IEC 60876-1:2014, 3.3.5.3, modified – Note 1 has been deleted.]

– 10 – IEC 62343-3-4:2018 © IEC 2018
3.10
rise time
t
r
elapsed time when the output power of the specified output port rises from 10 % of the
steady-state value to 90 % of the steady-state value
[SOURCE: IEC 60876-1: 2014, 3.3.6, modified – The symbol t has been added.]
r
3.11
fall time
t
f
elapsed time when the output power of the specified output port falls from 90 % of the
steady-state value to 10 % of the steady-state value
[SOURCE: IEC 60876-1:2014, 3.3.7, modified – The symbol t has been added.]
f
3.12
bounce time
t
b
elapsed time when the output power of a
specified output port maintains between 90 % and 110 % of its steady-state value from the
first time the output power of a specified output port reaches to 90 % of its steady-state value
Note 1 to entry: See Figure 2.
[SOURCE: IEC 60876-1:2014, 3.3.8.1]
3.13
bounce time
t '
b
elapsed time when the output power of a
specified output port maintains between 0 % and 10 % of its steady-state value from the first
time the output power of a specified output port reaches 10 % of its steady-state value
Note 1 to entry: See Figure 2.
[SOURCE: IEC 60876-1:2014, 3.3.8.2]
3.14
switching time
t
s
elapsed time from actuation to the time
when the output power of a specified output port maintains between 90 % and 110 % of its
steady-state value:
t = t + t + t
s l r b
where
t is the latency time;
l
t is the rise time;
r
t is the bounce time.
b
Note 1 to entry: See Figure 2 a), 2 b) and 2 c).

3.15
switching time
t '
s
elapsed time from actuation to the time
when the output power of a specified output port falls below 10 % of the steady state level:
t ' = t ' + t + t '
s l f b
where
t ' is the latency time;
l
t is the fall time;
f
t ' is the bounce time
b
Note 1 to entry: See Figure 2 a), 2 b) and 2 c)

Actuation energy supply
Output port power
110 % of steady-state
Steady-state
90 % of steady-state
10 % of steady-state
t ' t t '
t t t
f b
l r b l
Time
t '
s
t
s
IEC
Key
t , t ' switching time
s s
t , t ' latency time
l l
t rise time
r
t fall time
f
t , t ' bounce time
b b
a) – Non-latching switch, normally-off
Power
– 12 – IEC 62343-3-4:2018 © IEC 2018
Actuation energy supply
Actuation energy
l
Output port power
110 % of steady-state
Steady-state
90 % of steady-state
10 % of steady-state
t
b
t t
Time
l r
t ' t t '
l f b
t t '
s
s
IEC
Key
t , t ' switching time
s s
t , t ' latency time
l l
t rise time
r
t fall time
f
t , t ' bounce time
b b
b) – Non-latching switch, normally-on

Power
Output port power
Actuation energy supply
110 % of steady-state
Steady-state
90 % of steady-state
10 % of steady-state
t t t t ' t t ' Time
l r b l f b
t '
s
t
s
Actuation energy supply
IEC
Key
t , t ' switching time
s s
t , t ' latency time
l l
t rise time
r
t fall time
f
t , t ' bounce time
b b
c) – Latching switch
If, for any reason, the steady-state power of the isolated state is not zero, all the power levels leading to the
definitions of latency time, rise time, fall time, bounce time and, thus, of switching time should be normalized,
subtracting from them the steady-state power of the isolated state, before applying such definitions.
Figure 2 – Representation of latency time, rise time, fall time,
bounce time, and switching time
3.16
switching time matrix
matrix of coefficients in which each coefficient S is the longest switching time to turn path ij
ij
on or off from any initial state
[SOURCE: IEC 60876-1:2014, 3.3.10, modified – The figure has been deleted.]
3.17
maximum input power to single port
allowable optical power, which causes no damage by the optical power such as degradation
of adhesive or fibre fuse as for a particular port
[SOURCE: IEC 62343-3-3:2014, 3.30, modified – The term has been changed from
"maximum input power (single port)" to "maximum input power to single port".]

Power
– 14 – IEC 62343-3-4:2018 © IEC 2018
4 Performance specification templates
The performance specification templates of Clause 4 are applied for connectorized and non-
connectorized MCOS modules. For connectorized modules, the connector performances
should be in compliance with IEC 61753-021-2.
The performance parameters, requirement (R) or option (O), units and measurement methods
and conditions are shown in Table 1, Table 2, Table 3 and Table 4.
Table 1 – General performance specification template for MCOS
Performance
No. R/O Min. Max. Units Measurement methods and conditions
parameters
1 Storage temperature
R  ºC IEC 62343-1:2016, Annex A
range
2 Storage relative IEC 62343-1:2016, Annex A
R  %
humidity range
3 Operating case IEC 62343-1
R  ºC
temperature range
4 Operating relative
R  %
humidity range
Table 2 – Optical performance specification template for MCOS
Performance Measurement methods and
No. R/O Min. Max. Units
parameters conditions
1 Operating R  nm Defined as the minimum wavelength to
wavelength range the maximum wavelength
2 Port configuration R - Defined as M × N.
3 Insertion loss R  dB IEC 61300-3-7
IL
Condition: insertion loss shall be
determined over all states of
polarization, over the operating
wavelength range and temperature
range
Launch fibre length: ≥ 1,5 m
The test conditions shall provide loss
measurement results with an accuracy
of smaller than ≤ 0,05 dB over the
operating wavelength range
4 Insertion loss R n/a dB IEC 61300-3-7
uniformity
Condition: average state of polarization
(SOP) over the operating wavelength
and temperature range
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,05 dB
5 Block state O n/a dB Insertion loss under block state of the
attenuation
N × 1 switch.
Method: under consideration.
N side insertion
6 O n/a dB IEC 61300-3-7
loss difference
Condition: average SOP over the
between different
operating wavelength and temperature
ports
range
IL
diffN
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,05 dB
7 M side insertion O n/a dB IEC 61300-3-7
loss difference
Condition: average SOP over the
between different
operating wavelength and temperature
ports
range
IL
diffM
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,05 dB
8 Polarization R n/a dB IEC 61300-3-2
dependent loss
The allowable PDL combination applies
PDL
to all combinations of input and output
ports.
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,05 dB
9 Temperature O n/a dB IEC 61300-3-3
dependence loss
IEC 61300-3-7
(TDL) in one
conducting port
Condition: average SOP over the
pair
operating wavelength range
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,05 dB

– 16 – IEC 62343-3-4:2018 © IEC 2018
Performance Measurement methods and
No. R/O Min. Max. Units
parameters conditions
10 Wavelength O n/a dB IEC 61300-3-7
dependence loss
Condition: average SOP over the
(WDL) in one
operating wavelength range
conducting port
pair
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,05 dB
11 Return loss R n/a dB IEC 61300-3-6
RL
Condition: all ports not under test shall
be terminated to avoid unwanted
reflections contributing to the
measurement.
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,5 dB
12 Directivity R n/a dB IEC 61300-3-20
Condition: all ports not under test shall
be terminated to avoid unwanted
reflections contributing to the
measurement.
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,5 dB
13 Extinction ratio O n/a dB IEC 61300-3-7
ER
Condition: all ports not under test shall
be terminated to avoid unwanted
reflections contributing to the
measurement.
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,5 dB
14 Crosstalk R n/a dB IEC 61300-3-50
Condition: worst case over all states of
polarization
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,5 dB
15 Cumulative R n/a dB Condition: All of the input powers in
crosstalk each input port set to the same optical
power. Polarization condition is
averaged polarization.
Launch fibre length: ≥ 1,5 m
Measurement uncertainty: ≤ 0,5 dB
Direction: N to M, and M to N in the
N × M module.
16 Dynamic crosstalk O  dB IEC 62343-5-2
17 Dynamic crosstalk: O  dB IEC 62343-5-2
insertion loss
stability in the
existing route
during the other
switch operation
Performance Measurement methods and
No. R/O Min. Max. Units
parameters conditions
18 Attenuation without O  dB IEC 61300-3-7
power
Condition: Launch fibre length: ≥ 1,5 m
Launch conditions: wavelength of the
source shall be longer than cut-off
wavelength of the fibre.
Source: stability at the operating
wavelength shall be better than
±0,05 dB over the measuring period of
at least within 1 h.
Waveband to meet the operating
wavelength of WSS
Detector system: linearity within
±0,05 dB
Spectral response matched to source
Dynamic range within the attenuation
values to be measured
19 Out of band O n/a dB IEC 61290-7-1
attenuation
20 Switching time R  s IEC 61300-3-21
21 Latency time O n/a s IEC 61300-3-21
22 Rise time O  s IEC 61300-3-21
23 Fall time O  s IEC 61300-3-21
24 Bounce time O n/a s IEC 61300-3-21
25 Polarization mode R n/a ps IEC 61300-3-32
dispersion
The allowable PMD combination
PMD
applies to all combination of input and
output ports
26 Group delay ripple O  ps IEC 61300-3-38
27 Phase ripple O  rad IEC 61300-3-38
28 Chromatic O  ps/nm IEC 61300-3-38
dispersion
29 Maximum input R n/a dBm IEC 61300-2-14
power to single
port
30 Intra-module O  dB Under consideration
crosstalk
31 Multipath O  dB Under consideration
interference
Table 3 – Electrical and communication performance
specification template for MCOS
No. Performance R/O Min Max Units Measurement methods and
parameters conditions
1 Supply voltage R  V
2 Supply current R  A
3 Power consumption R n/a W
4 Electrical interface O n/a - Under consideration
5 Communication O n/a - Under consideration
interfaces
– 18 – IEC 62343-3-4:2018 © IEC 2018
Table 4 – Mechanical performance specification template for MCOS
No. Performance R/O Min Max Units Measurement methods and
parameters conditions
1 Module size R mm
× mm
× mm
2 Fibre type R - For example, IEC 60793-2-50, B1
3 Pigtail fibre length R  m
4 Pigtail fibre buffer R  Refer to IEC 60973-2-50
µm
diameter
5 Optical connector R - For example,
IEC 61754 (all parts)
6 Optical connector O -
labelling
5 Electromagnetic compatibility (EMC) requirements
The devices and assemblies addressed by this document shall comply with suitable
requirements for electromagnetic compatibility (in terms of both emission and immunity),
depending on particular usage/environment in which they are intended to be installed or
integrated. EMC requirements are standardized in IEC 61000 (all parts).

Bibliography
IEC 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
IEC 60875-1, Fibre optic interconnecting devices and passive components – Non-wavelength-
selective fibre optic branching devices – Part 1: Generic specification
IEC 60876-1:2014, Fibre optic interconnecting devices and passive components – Fibre optic
spatial switches – Part 1: Generic specification
IEC 61000 (all parts), Electromagnetic compatibility (EMC)
IEC 61300 (all parts), Fibre optic interconnecting devices and passive components – Basic
test and measurement procedures
IEC 61753-1, Fibre optic interconnecting devices and passive components performance
standard – Part 1: General and guidance for performance standards
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
IEC 61753-081-2, Fibre optic interconnecting devices and passive components – Performance
standard – Part 081-2: Non-connectorized single-mode fibre optic middle-scale 1 x N DWDM
devices for category C – Controlled environments
IEC 61754 (all parts), Fibre optic interconnecting devices and passive components – Fibre
optic connector interfaces
IEC 61978-1, Fibre optic interconnecting devices and passive components – Fibre optic
passive chromatic dispersion compensators – Part 1: Generic specification
IEC 62343, Dynamic modules – General and guidance
IEC 62343-3-3, Dynamic modules – Part 3-3: Performance specification templates –
Wavelength selective switches
IEC 62343-4-1, Dynamic modules – Part 4-1: Software and hardware interface – 1 x 9
wavelength selective switch
IEC TR 62343-6-3, Dynamic modules – Part 6-3: Round robin measurement results for group
delay ripple of tunable dispersion compensators
IEC TR 62343-6-4, Dynamic modules – Part 6-4: Design guides – Reconfigurable optical
add/drop multiplexer
IEC TS 62538, Categorization of optical devices
ITU-T Recommendation G.671, Transmission characteristics of optical components and
subsystems
ITU-T Recommendation G.692, Optical interfaces for multichannel systems with optical
amplifiers
___________
– 20 – IEC 62343-3-4:2018 © IEC 2018
SOMMAIRE
AVANT-PROPOS . 21
INTRODUCTION . 23
1 Domaine d'application . 24
2 Références normatives . 24
3 Termes et définitions . 25
4 Modèles de spécification de performance . 32
5 Exigences pour la compatibilité électromagnétique (CEM) . 36
Bibliographie . 37

Figure 1 – Diagramme de bloc fonctionnel du MCOS . 26
Figure 2 – Représentation du temps de latence, du temps de montée, du temps de
descente, du temps de rebondissement et du temps de commutation . 31

Tableau 1 – Modèle de spécification de performance générale pour module MCOS . 32
Tableau 2 – Modèle de spécification de performance optique pour module MCOS . 32
Tableau 3 – Modèle de spécification de performance électrique et de communication
pour module MCOS . 36
Tableau 4 – Modèle de spécification de performance mécanique pour module MCOS. 36

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
MODULES DYNAMIQUES –
Partie 3-4: Modèles de spécification de performance –
Commutateurs optiques multidiffusions

AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l'IEC). L'IEC a pour
objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines
de l'électricité et de l'électronique. A cet effet, l'IEC– entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de l'IEC"). Leur élaboration est confiée à des comités d'études, aux
travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec l'IEC, participent également aux
travaux. L'IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l'IEC concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l'IEC
intéressés sont représentés dans chaque comité d'études.
3) Les Publications de l'IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l'IEC. Tous les efforts raisonnables sont entrepris afin que l'IEC
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régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
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fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
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6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l'IEC, à ses administrateurs, employés, auxiliaires ou mandataires,
y compris ses experts particuliers et les membres de ses comités d'études et des Comités nationaux de l'IEC,
pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre dommage de quelque
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Publication de l'IEC, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L'attention est attirée sur le fait que certains des éléments de la présente Publication de l'IEC peuvent faire
l'objet de droits de brevet. L'IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits
de brevets et de ne pas avoir signalé leur existence.
La Norme internationale IEC 62343-3-4 a été établie par le sous-comité 86C: Systèmes et
dispositifs actifs à fibres optiques, du comité d'études 86 de l'IEC: Fibres optiques.
Le texte de cette norme internationale est issu des documents suivants:
FDIS Rapport de vote
86C/1506/FDIS 86C/1508/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette norme internationale.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2.

– 22 – IEC 62343-3-4:2018 © IEC 2018
Une liste de toutes les parties de la série IEC 62343, publiées sous le titre général Modules
dynamiques, peut être consultée sur le site web de l'IEC.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de
stabilité indiquée sur le site web de l'IEC sous "http://webstore.iec.ch" dans les données
relatives au document recherché. A cette date, le document sera
• reconduit ,
• supprimé,
• remplacée par une édition révisée, ou
• amendé.
INTRODUCTION
Un commutateur optique multidiffusion (MCOS) est un module dynamique (DM, dynamic
module) principalement utilisé dans un système de multiplexage optique reconfigurable
(ROADM, reconfigurable optical add-drop multiplexer) pour réaliser des fonctions CDC
(colourless, directionless and contentionless). Un commutateur optique multidiffusion
fonctionne comme un commutateur optique et un dispositif de couplage fibronique ne
dépendant pas de la longueur d'onde. Les informations techniques concernant les
commutateurs optiques multidiffusions et leurs applications dans les systèmes DWDM (dense
wavelength division multiplexing) sont décrites dans l'IEC TR 62343-6-4.

– 24 – IEC 62343-3-4:2018 © IEC 2018
MODULES DYNAMIQUES –
Partie 3-4: Modèles de spécification de performance –
Commutateurs optiques multidiffusions
...