SIST EN 62343-3-3:2014

Dynamic modules - Performance specification templates - Part 3-3: Wavelength selective switches

EN IEC 62343-3-3 provides a performance specification template for wavelength selective switches. The object is to provide a framework for the preparation of detail specifications on the performance of wavelength selective switches. Additional specification parameters may be included for detailed product specifications or performance specifications. However, specification parameters specified in this standard shall not be removed from the detail product specifications or performance specifications. The technical information regarding wavelength selective switches, and their applications in DWDM systems will be described in IEC TR 62343-6-4, currently under consideration.

Dynamische Module - Teil 3-3: Vorlagen für Leistungsspezifikationen - Wellenlängen-Wählschalter

Modules dynamiques - Modèles de spécification de performance - Partie 3-3: Commutateurs sélectifs en longueur d'onde

L'IEC 62343-3-3:2014 présente un modèle de spécification de performance pour les commutateurs sélectifs en longueur d'onde. Il est destiné à fournir un cadre pour la préparation de spécifications particulières applicables aux commutateurs sélectifs en longueur d'onde et à leurs performances. Des paramètres de spécification supplémentaires peuvent être inclus pour les spécifications détaillées de produit ou de performances. Toutefois, les paramètres de spécification stipulés dans la présente norme ne doivent pas être retirés des spécifications particulières de produit ou de performances. Les informations techniques concernant les commutateurs sélectifs en longueur d'onde et leurs applications dans les systèmes DWDM seront décrites dans l'IEC TR 62343-6-4, actuellement à l'étude.
Mots clés: spécification de performance pour les commutateurs sélectifs en longueur d'onde

Dinamični moduli - Predloge za tehnične specifikacije - 3-3. del: Valovnodolžinska selektivna stikala (IEC 62343-3-3:2014)

Standard EN IEC 62343-3-3 zagotavlja predloge za tehnične specifikacije za valovnodolžinska selektivna stikala. Namen je zagotoviti ogrodje za pripravo podrobnih specifikacij o delovanju valovnodolžinskih selektivnih stikal. Vključeni so lahko dodatni specifikacijski parametri, da se omogoči podrobne specifikacije proizvodov ali delovanja. Specifikacijskih parametrov iz tega standarda se ne sme odstraniti iz podrobnih specifikacij proizvoda ali delovanja. Te tehnične informacije o valovnodolžinskih selektivnih stikalih in njihovih uporabah v sistemih DWDM bodo opisane v standardu IEC TR 62343-6-4, ki je trenutno še v obravnavi.

General Information

• Status: Withdrawn
• Publication Date: 12-Aug-2014
• Withdrawal Date: 21-May-2023
• ICS: 31.220.20 - Switches
• ICS: 33.180.30 - Optic amplifiers
• Technical Committee: MOC - Mobile Communications
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 22-May-2023
• Due Date: 14-Jun-2023
• Completion Date: 22-May-2023
• Ref Project: EN 62343-3-3:2014 - Dynamic modules - Part 3-3: Performance specification templates - Wavelength selective switches

Relations

• Replaced By: SIST EN IEC 62343-3-3:2020 - Dynamic modules - Part 3-3: Performance specification templates - Wavelength selective switches (IEC 62343-3-3:2020)
• Effective Date: 04-Jun-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62343-3-3:2014
01-september-2014
'LQDPLþQLPRGXOL3UHGORJH]DWHKQLþQHVSHFLILNDFLMHGHO9DORYQRGROåLQVND
VHOHNWLYQDVWLNDOD,(&
Dynamic modules - Performance specification templates - Part 3-3: Wavelength selective
switches
Modules dynamiques - Modèles de spécification de performance - Partie 3-3:
Commutateurs sélectifs en longueur d'onde
Ta slovenski standard je istoveten z: EN 62343-3-3:2014
ICS:
31.220.20 Stikala Switches
33.180.30 2SWLþQLRMDþHYDOQLNL Optic amplifiers
SIST EN 62343-3-3:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62343-3-3:2014

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SIST EN 62343-3-3:2014


EUROPEAN STANDARD EN 62343-3-3

NORME EUROPÉENNE

EUROPÄISCHE NORM
July 2014
ICS 33.180.20

English Version
Dynamic modules - Part 3-3: Performance specification
templates - Wavelength selective switches
(IEC 62343-3-3:2014)
Modules dynamiques - Partie 3-3: Modèles de spécification Dynamische Module - Vorlagen für Leistungsspezifikationen
de performance - Commutateurs sélectifs en longueur - Teil 3-3: Wellenlängen-Wählschalter
d'onde (IEC 62343-3-3:2014)
(CEI 62343-3-3:2014)
This European Standard was approved by CENELEC on 2014-06-10. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 62343-3-3:2014 E

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SIST EN 62343-3-3:2014
EN 62343-3-3:2014 - 2 -
Foreword
The text of document 86C/1156/CDV, future edition 1 of IEC 62343-3-3, prepared by SC 86C "Fibre
optic systems and active devices” of IEC/TC 86 “Fibre optics" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 62343-3-3:2014.

The following dates are fixed:
(dop) 2015-03-10
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2017-06-10
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.

Endorsement notice
The text of the International Standard IEC 62343-3-3:2014 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60793-2-50 NOTE Harmonized as EN 60793-2-50.
IEC 60869-1 NOTE Harmonized as EN 60869-1.
IEC 60876-1 NOTE Harmonized as EN 60876-1.
IEC 61300 Series NOTE Harmonized as EN 61300 Series (partially modified).
IEC 61300-3-4 NOTE Harmonized as EN 61300-3-4.
IEC 61300-3-20 NOTE Harmonized as EN 61300-3-20.
IEC 61753-1 NOTE Harmonized as EN 61753-1.
IEC 61753-081-2 NOTE Harmonized as EN 61753-081-2.
IEC 61754 Series NOTE Harmonized as EN 61754 Series (partially modified).
IEC 61978-1 NOTE Harmonized as EN 61978-1.

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SIST EN 62343-3-3:2014
- 3 - EN 62343-3-3:2014
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

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.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu

Publication Year Title EN/HD Year
IEC 61290-7-1 -  Optical amplifiers - Test methods - EN 61290-7-1 -
Part 7-1: Out-of-band insertion losses -
Filtered optical power meter method
IEC 61300-2-14 -  Fibre optic interconnecting devices and EN 61300-2-14 -
passive components - Basic test and
measurement procedures -
Part 2-14: Tests - High optical power
IEC 61300-3-2 -  Fibre optic interconnecting devices and EN 61300-3-2 -
passive components - Basic test and
measurement procedures -
Part 3-2: Examinations and measurements -
Polarization dependent loss in a single-
mode fibre optic device
IEC 61300-3-6 -  Fibre optic interconnecting devices and EN 61300-3-6 -
passive components - Basic test and
measurement procedures -
Part 3-6: Examinations and measurements -
Return loss
IEC 61300-3-14 -  Fibre optic interconnecting devices and EN 61300-3-14 -
passive components - Basic test and
measurement procedures -
Part 3-14: Examinations and measurements
- Accuracy and repeatability of the
attenuation settings of a variable attenuator
IEC 61300-3-21 -  Fibre optic interconnecting devices and EN 61300-3-21 -
passive components - Basic test and
measurement procedures -
Part 3-21: Examinations and measurements
- Switching time
IEC 61300-3-29 -  Fibre optic interconnecting devices and EN 61300-3-29 -
passive components - Basic test and
measurement procedures -
Part 3-29: Examinations and measurements
- Spectral transfer characteristics of DWDM
devices

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SIST EN 62343-3-3:2014
EN 62343-3-3:2014 - 4 -
Publication Year Title EN/HD Year
IEC 61300-3-32 -  Fibre optic interconnecting devices and EN 61300-3-32 -
passive components - Basic test and
measurement procedures -
Part 3-32: Examinations and measurements
- Polarisation mode dispersion
measurement for passive optical
components
IEC 61300-3-38 -  Fibre optic interconnecting devices and EN 61300-3-38 -
passive components - Basic test and
measurement procedures -
Part 3-38:Examinations and measurements
- Group delay, chromatic dispersion and
phase ripple
IEC 61753-021-2 -  Fibre optic interconnecting devices and EN 61753-021-2 -
passive components performance standard -
- Part 021-2: Grade C/3 single-mode fibre
optic connectors for category C - Controlled
environment
IEC 62074-1 -  Fibre optic interconnecting devices and EN 62074-1 -
passive components - Fibre optic WDM
devices -
Part 1: Generic specification
1)
IEC 62343-4-1 -  Dynamic modules - - -
Part 4-1: Software and hardware interface
standards - 1x9 wavelength selective switch
ITU-T -  Spectral grids for WDM applications: DWDM - -
Recommendation frequency grid
G.694.1
ITU-T -  Optical system design and engineering - -
Recommendation considerations
G.Sup39


1)
Under consideration.

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SIST EN 62343-3-3:2014



IEC 62343-3-3

®


Edition 1.0 2014-05




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Dynamic modules –

Part 3-3: Performance specification templates – Wavelength selective switches




Modules dynamiques –

Partie 3-3: Modèles de spécification de performance – Commutateurs sélectifs

en longueur d'onde















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX R


ICS 33.180.20 ISBN 978-2-8322-1544-9



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

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SIST EN 62343-3-3:2014
– 2 – IEC 62343-3-3:2014 © IEC 2014
CONTENTS

FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Test report . 14
5 Reference components . 14
6 Performance requirements . 14
6.1 Dimensions . 14
6.2 Sample size . 14
6.3 Test details and requirements . 14
Bibliography . 19

Figure 1 – Illustration of X-dB bandwidth . 9
Figure 2 – Illustration of adjacent channel crosstalk . 10
Figure 3 – Illustration of non-adjacent channel crosstalk . 11
Figure 4 – Illustration of latency time, rise time, fall time, bounce time, and switching
time . 13

Table 1 – Tests and requirements . 15

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SIST EN 62343-3-3:2014
IEC 62343-3-3:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DYNAMIC MODULES –

Part 3-3: Performance specification templates –
Wavelength selective 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,
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
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
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
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
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 62343-3-3 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/1156/CDV 86C/1214/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.

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SIST EN 62343-3-3:2014
– 4 – IEC 62343-3-3:2014 © IEC 2014
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 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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SIST EN 62343-3-3:2014
IEC 62343-3-3:2014 © IEC 2014 – 5 –
INTRODUCTION
A wavelength selective switch (WSS) is a dynamic module (DM), which is mainly used in a
reconfigurable optical add-drop multiplexer (ROADM) system to switch a particular
wavelength signal to any output ports in DWDM networks. The WSS module has one input
port and a plurality of output ports (i.e. 1 × N WSS) and can be used in reverse, with N input
ports and one output port, depending on its application. It is controlled with software, which
determines any wavelength signal among a DWDM signal from one input port to switch to a
particular output port in case of 1 × N application.

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SIST EN 62343-3-3:2014
– 6 – IEC 62343-3-3:2014 © IEC 2014
DYNAMIC MODULES –

Part 3-3: Performance specification templates –
Wavelength selective switches



1 Scope
This part of IEC 62343 provides a performance specification template for wavelength
selective switches. The object is to provide a framework for the preparation of detail
specifications on the performance of wavelength selective switches.
Additional specification parameters may be included for detailed product specifications or
performance specifications. However, specification parameters specified in this standard shall
not be removed from the detail product specifications or performance specifications.
The technical information regarding wavelength selective switches, and their applications in
DWDM systems will be described in IEC TR 62343-6-4, currently under consideration.
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 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 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-14, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-14: Examinations and measurements – Accuracy and
repeatability of the attenuation settings of a variable attenuator
IEC 61300-3-21, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-21: Examinations and measurements – Switching time
and bounce time
IEC 61300-3-29, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-29: Examinations and measurements – Measurement
techniques for characterizing the amplitude of the spectral transfer function of DWDM
components

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SIST EN 62343-3-3:2014
IEC 62343-3-3:2014 © IEC 2014 – 7 –
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 61753-021-2, Fibre optic passive component performance standard – Part 021-2: Grade
C/3 single-mode fibre optic connectors for category C – Controlled environment
IEC 62074-1, Fibre optic interconnecting devices and passive components – Fibre optic WDM
devices – Part 1: Generic specification
IEC 62343-4-1, Dynamic modules – Part 4-1: Software and hardware interface standards –
1
1x9 wavelength selective switch
ITU-T Recommendation G.694.1, Spectral grids for WDM applications: DWDM frequency grid
ITU-T G.Sup39, Optical system design and engineering considerations
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
wavelength selective switch
WSS
dynamic module, which is mainly used in a reconfigurable optical add drop multiplexer
(ROADM) system to switch all wavelength signals to their respective required output port in
DWDM networks
Note 1 to entry: It is electrically controlled with software, which directs each wavelength signal among an input
DWDM signal from one input port to the required output port for each wavelength signal.
3.2
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
and generally corresponds to spectral bands for single-mode systems defined in
ITU-T G.Sup39
3.3
port
optical fibre or optical fibre connector attached to a WSS module for the entry and/or exit of
the optical signal (input and/or output)
3.4
channel
signal at wavelength, λ, that corresponds to ITU grid (ITU-T Recommendation G.694.1) within
the range of operating wavelength range
___________
1
Under consideration.

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SIST EN 62343-3-3:2014
– 8 – IEC 62343-3-3:2014 © IEC 2014
3.5
channel spacing
centre-to-centre difference in frequency (or wavelength) between adjacent channels in a
device
3.6
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, f , this frequency range is from
nomi
f = (f – ∆f ) to f = (f + ∆f ), where ∆f is the maximum channel central frequency deviation.
imin nomi max imax nomi max max
Note 2 to entry: Nominal channel centre frequency and maximum channel centre frequency deviation are defined
in ITU-T Rec. G.692.
3.7
insertion loss
IL
value defined in the equation below at the particular wavelength between two conducting
ports
Note 1 to entry: It is the reduction in optical power between an input and output port of a module expressed in
decibels.
IL = –10 log (P /P )
out in
where
P is the optical power launched into input port;
in
P is the optical power received from the output port.
out
3.8
insertion loss uniformity
difference between the maximum and minimum insertion loss at the output for a specified set
of input ports
3.9
insertion loss ripple
maximum peak-to-peak variation of the insertion loss within a channel frequency (or
wavelength) range
3.10
X-dB passband width
width of a channel centred about the channel central wavelength within which the optical
attenuation is within X dB
Note 1 to entry: The terms “operating wavelength range” or “channel passband” are used and have the same
meaning as passband for DWDM devices. The X-dB bandwidth is defined through the spectral dependence of a
ij
(where i ≠ j) as the minimum wavelength range centred about the operating wavelength λ within which the
h
variation of a is less than X dB. The minimum wavelength range is determined considering thermal wavelength
ij
shift, polarization dependence and long-term aging shift (refer to Figure 1 below).
Note 2 to entry: It is recommended that the passband width be specified as 0,5 dB, 1 dB and 3 dB (X = 0,5, 1 and 3).

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SIST EN 62343-3-3:2014
IEC 62343-3-3:2014 © IEC 2014 – 9 –
50

a
ij Centre wavelength shift
Longer centre
wavelength
Shorter centre wavelength
X dB
X dB
X dB bandwidth
0
λ
Wavelength
h
IEC  1195/14

Figure 1 – Illustration of X-dB bandwidth
3.11
return loss
RL
fraction of input power that is returned from any port of a module expressed in decibels and
defined in this equation at the particular wavelength between two conducting ports
RL = –10 log (P /P )
refl in
where
P is the optical power launched into port;
in
P is the optical power received back from the same port.
refl
3.12
adjacent channel crosstalk
adjacent channel isolation
crosstalk with the restriction that x, the isolation wavelength number, is restricted to the
channels immediately adjacent to the (channel) wavelength number associated with output
port
Note 1 to entry: Adjacent channel crosstalk is a negative value in dB (see Figure 2, below).
Note 2 to entry: The adjacent channel isolation is different from adjacent channel crosstalk. In Figure 2, an up-
pointing arrow shows positive, a down-pointing arrow negative. Generally, there are two adjacent channel
isolations for the shorter wavelength (higher frequency) side and a longer wavelength (lower frequency) side.
Note 3 to entry: The term crosstalk and isolation are often used with almost the same in meaning. Care should be
taken not to confuse crosstalk and isolation. Crosstalk is defined so that for WDM devices, the value of the ratio
between the optical power of the specified signal and the specified noise, is a negative value in dB. The crosstalk
is defined for each output port. Crosstalk for WDM devices is defined for a DEMUX (1 × N WDM device). The
crosstalk for port o to port j is the subtraction from the insertion loss of port i to o (conducting port pair) to the
isolation of port j to o (isolated port pair). For WDM devices having three of more ports, the crosstalk should be
specified as the maximum value of the crosstalk for each output port. On the other hand, isolation is the minimum
value of a (where i ≠ j) within isolation wavelength range for isolated port pair. Isolation is positive value in dB.
ij

Optical attenuation  (dB)

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SIST EN 62343-3-3:2014
– 10 – IEC 62343-3-3:2014 © IEC 2014
Non-adjacent Adjacent channel Adjacent channel Non-adjacent
Channel centre
channel centre centre frequency frequency centre frequency channel centre
frequency (wavelength) (wavelength) (wavelength) frequency
(wavelength)  (wavelength)
50
a
iox
a
ioc
0
Frequency  (THz) for DWDM devices, wavelength  (nm)

IEC  1196/14

Figure 2 – Illustration of adjacent channel crosstalk
3.13
non-adjacent channel crosstalk
non-adjacent channel isolation
crosstalk with the restriction that the isolation wavelength (frequency) is restricted to each of
the channels not immediately adjacent to the channel associated with output port
Note 1 to entry: The non-adjacent channel crosstalk is different from non-adjacent channel isolation. In Figure 3,
up-pointing arrow shows positive, down-pointing arrow negative.
Optical attenuation  (dB)
Adjacent channel isolation
Adjacent channel crosstalk

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SIST EN 62343-3-3:2014
IEC 62343-3-3:2014 © IEC 2014 – 11 –
Non-adjacent Adjacent channel Channel centre Adjacent channel Non-adjacent
channel centre centre frequency centre frequency channel centre
frequency
frequency (wavelength) (wavelength) (wavelength) frequency
(wavelength)  (wavelength)
50
a
iox

a
ioc
0
Frequency  (THz) for DWDM devices, wavelength  (nm)

IEC  1197/14

Figure 3 – Illustration of non-adjacent channel crosstalk
3.14
total channel crosstalk
total channel isolation
cumulative isolation due to the contributions at all the isolation wavelengths (frequencies) and
transfer matrix coefficient for ports i and j, t for any two ports i and j (where i ≠ j). It is the
ij
ratio defined as
 
 
 
t (λ )
ij h
XT =−10×Log
 
tot
N
 
t (λ )
ij k
∑ 
 k(k≠h) 
 
where
N is the number of channels of the device;
λ is the nominal operating wavelength (frequency) for the two of ports, i and j;
h
λ are the nominal isolation wavelengths (frequencies) for the same pair of ports.
k
Note 1 to entry: Total channel crosstalk is also expressed by total channel isolation as in the following equation:
( )
XT = a λ − I
tot ij h tot
Note 2 to entry: Total channel crosstalk is a negative value in dB. For a WDM device, total channel crosstalk shall
be specified as the maximum value of total channel crosstalk of all channels.
3.15
transient crosstalk
transient isolation/transient directivity
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 WSS
module
Optical attenuation  (dB)
Non-adjacent channel isolation
Non-adjacent channel crosstalk

---------------------- Page: 17 ----------------------

SIST EN 62343-3-3:2014
– 12 – IEC 62343-3-3:2014 © IEC 2014
Note 1 to entry: Hitless operation means that there is no influence on other performance during switching
operation.
3.16
channel blocking attenuation
attenuation value when a particular channel is set in the blocking state (possible maximum
attenuation)
3.17
attenuation without power
attenuation value when electric power for driving the attenuation is not supplied
3.18
variable attenuation range
attenuation value that can be changed with channel-b
...