Fibre optic active components and devices - Performance standards - Part 5: ATM-PON transceivers with LD driver and CDR ICs (IEC 62149-5:2020)

This part of IEC 62149 specifies performance on the transceiver modules for asynchronoustransfer-
mode passive optical network (ATM-PON) systems recommended by the International
Telecommunication Union (ITU) in ITU-T Recommendation G.983.1.

Aktive Lichtwellenleiterbauelemente und -geräte - Betriebsverhalten - Teil 5: ATM-PON Sende- und Empfangsmodule mit Laserdiodentreiberschaltungen und Takt- und Datenrückgewinnungs-ICs (IEC 62149-5:2020)

Composants et dispositifs actifs à fibres optiques - Normes de fonctionnement - Partie 5: Emetteurs-récepteurs ATM-PON avec programme de gestion LD et ICs CDR (IEC 62149-5:2020)

IEC 62149-5:2020 est disponible sous forme de IEC 62149-5:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

L'IEC 62149-5:2020 spécifie les performances applicables aux modules d’émetteurs-récepteurs pour les systèmes de réseau optique passif en mode de transfert asynchrone (ATM-PON), recommandées par l’Union internationale des télécommunications (UIT) dans la Recommandation UIT-T G.983.1. Cette troisième édition annule et remplace la seconde édition parue en 2009 et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
- les descriptions des types à l’Article 4 ont été supprimées;
- les titres des documents de référence ont été actualisés.

Aktivne komponente in naprave optičnih vlaken - Izvedbeni standardi - 5. del: ATM-PON oddajniki in sprejemniki z lasersko diodnim pogonom in CDR IC (IEC 62149-5:2020)

General Information

Status
Published
Publication Date
08-Oct-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Oct-2020
Due Date
12-Dec-2020
Completion Date
09-Oct-2020

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SLOVENSKI STANDARD
SIST EN IEC 62149-5:2020
01-december-2020
Nadomešča:
SIST EN 62149-5:2011
Aktivne komponente in naprave optičnih vlaken - Izvedbeni standardi - 5. del:
ATM-PON oddajniki in sprejemniki z lasersko diodnim pogonom in CDR IC (IEC
62149-5:2020)
Fibre optic active components and devices - Performance standards - Part 5: ATM-PON
transceivers with LD driver and CDR ICs (IEC 62149-5:2020)
Aktive Lichtwellenleiterbauelemente und -geräte - Betriebsverhalten - Teil 5: ATM-PON
Sende- und Empfangsmodule mit Laserdiodentreiberschaltungen und Takt- und
Datenrückgewinnungs-ICs (IEC 62149-5:2020)
Composants et dispositifs actifs à fibres optiques - Normes de fonctionnement - Partie 5:
Emetteurs-récepteurs ATM-PON avec programme de gestion LD et ICs CDR (IEC
62149-5:2020)
Ta slovenski standard je istoveten z: EN IEC 62149-5:2020
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
SIST EN IEC 62149-5:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62149-5:2020

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SIST EN IEC 62149-5:2020


EUROPEAN STANDARD EN IEC 62149-5

NORME EUROPÉENNE

EUROPÄISCHE NORM
September 2020
ICS 33.180.20 Supersedes EN 62149-5:2011 and all of its amendments
and corrigenda (if any)
English Version
Fibre optic active components and devices - Performance
standards - Part 5: ATM-PON transceivers with LD driver and
CDR ICs
(IEC 62149-5:2020)
Composants et dispositifs actifs fibroniques - Normes de Aktive Lichtwellenleiterbauelemente und -geräte -
performances - Partie 5: Emetteurs-récepteurs ATM-PON Betriebsverhalten - Teil 5: ATM-PON Sende- und
avec programme de gestion LD et CI CDR Empfangsmodule mit Laserdiodentreiberschaltungen und
(IEC 62149-5:2020) Takt- und Datenrückgewinnungs-ICs
(IEC 62149-5:2020)
This European Standard was approved by CENELEC on 2020-09-22. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 62149-5:2020 E

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SIST EN IEC 62149-5:2020
EN IEC 62149-5:2020 (E)
European foreword
The text of document 86C/1667(F)/FDIS, future edition 3 of IEC 62149-5, 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 IEC 62149-5:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-06-22
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-09-22
document have to be withdrawn
This document supersedes EN 62149-5:2011 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 62149-5:2020 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 series NOTE Harmonized as EN IEC 60793 series
IEC 60794 series NOTE Harmonized as EN 60794 series
IEC 60825 series NOTE Harmonized as EN 60825 series
IEC 61076 series NOTE Harmonized as EN IEC 61076 series
IEC 61280 series NOTE Harmonized as EN 61280 series
IEC 61281-1 NOTE Harmonized as EN IEC 61281-1
IEC 61754 series NOTE Harmonized as EN 61754 series
IEC 62007-1 NOTE Harmonized as EN 62007-1
IEC 62007-2 NOTE Harmonized as EN 62007-2
ISO 1101:2017 NOTE Harmonized as EN ISO 1101:2017 (not modified)
2

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SIST EN IEC 62149-5:2020
EN IEC 62149-5:2020 (E)
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
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.
NOTE 1 Where 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 60068-2-6 - Environmental testing - Part 2–6: Tests - EN 60068-2-6 -
Test Fc: Vibration (sinusoidal)
IEC 60068-2-27 - Environmental testing - Part 2–27: Tests - EN 60068-2-27 -
Test Ea and guidance: Shock
IEC 60332-3-24 - Tests on electric and optical fibre cables EN IEC 60332-3-24 -
under fire conditions - Part 3–24: Test for
vertical flame spread of vertically-mounted
bunched wires or cables - Category C
IEC 60825-1 - Safety of laser products - Part 1: EN 60825-1 -
Equipment classification and requirements
IEC 60950-1 - Information technology equipment - Safety EN 60950-1 -
- Part 1: General requirements
IEC 61000-6-3 - Electromagnetic compatibility (EMC) - Part- -
6–3: Generic standards - Emission
standard for equipment in residential
environments
IEC 61280-1-1 - Fibre optic communication subsystem EN 61280-1-1 -
basic test procedures - Part 1–1: Test
procedures for general communication
subsystems - Transmitter output optical
power measurement for single-mode
optical fibre cable
IEC 61280-1-3 - Fibre optic communication subsystem test EN 61280-1-3 -
procedures - Part 1–3: General
communication subsystems - Central
wavelength and spectral width
measurement
IEC 61280-2-2 - Fibre optic communication subsystem test EN 61280-2-2 -
procedures - Part 2–2: Digital systems -
Optical eye pattern, waveform and
extinction ratio measurement
3

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SIST EN IEC 62149-5:2020
EN IEC 62149-5:2020 (E)
IEC 61300-2-4 - Fibre optic interconnecting devices and EN IEC 61300-2-4 -
passive components - Basic test and
measurement procedures - Part 2–4: Tests
- Fibre or cable retention
IEC 61300-2-17 - Fibre optic interconnecting devices and EN 61300-2-17 -
passive components - Basic test and
measurement procedures - Part 2–17:
Tests - Cold
IEC 61300-2-18 - Fibre optic interconnecting devices and EN 61300-2-18 -
passive components - Basic test and
measurement procedures - Part 2–18:
Tests - Dry heat - High temperature
endurance
IEC 61300-2-19 - Fibre optic interconnecting devices and EN 61300-2-19 -
passive components - Basic test and
measurement procedures - Part 2–19:
Tests - Damp heat (steady-state)
IEC 61300-2-22 - Fibre optic interconnecting devices and EN 61300-2-22 -
passive components - Basic test and
measurement procedures - Part 2–22:
Tests - Change of temperature
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 61753-1 - Fibre optic interconnecting devices and EN IEC 61753-1 -
passive components - Performance
standard - Part 1: General and guidance
IEC 62148-1 - Fibre optic active components and devices EN IEC 62148-1 -
- Package and interface standards - Part 1:
General and guidance
IEC 62150-2 - Fibre optic active components and devices EN 62150-2 -
- Test and measurement procedures - Part
2: ATM-PON transceivers
ITU-T 2006 Optical interfaces for equipments and - -
Recommendation systems relating to the synchronous digital
G.957 hierarchy
ITU-T 2005 Broadband optical access systems based - -
Recommendation on Passive Optical Networks (PON)
G.983.1


4

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SIST EN IEC 62149-5:2020



IEC 62149-5

®


Edition 3.0 2020-08




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Fibre optic active components and devices – Performance standards –

Part 5: ATM-PON transceivers with LD driver and CDR ICs



Composants et dispositifs actifs fibroniques – Normes de performances –

Partie 5: Émetteurs-récepteurs ATM-PON avec programme de gestion

LD et CI CDR















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.180.20 ISBN 978-2-8322-8608-1




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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SIST EN IEC 62149-5:2020
– 2 – IEC 62149-5:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Term, definitions and abbreviated terms . 8
3.1 Terms and definitions. 8
3.2 Abbreviated terms . 9
4 Classification . 9
5 Product definition . 9
5.1 Description of transceiver module . 9
5.2 Description of applied form . 10
5.3 Block diagram . 10
5.4 Absolute limiting rating . 10
5.5 Functional specification . 11
6 Testing . 18
6.1 General . 18
6.2 Characterization testing . 18
6.2.1 Characterization: transmitter section. 19
6.2.2 Characterization: receiver section . 20
6.3 Performance testing . 20
7 Environmental specifications . 21
7.1 General safety . 21
7.2 Laser safety . 21
7.3 Electromagnetic emission . 21
Annex A (informative) Measurement on tolerance to the reflected optical power
(Table 3, item 13) . 22
Annex B (informative) Logic level of alarm and shutdown signal . 24
Bibliography . 25

Figure 1 – Functional block diagram (example) . 10
Figure 2 – Relationship of phase between clock and data signals . 17
Figure 3 – Recommended electrical circuit diagram for LVTTL-type interface
(examples) . 17
Figure 4 – Schematic drawing for defining launched optical power without input to
transmitter . 18
Figure 5 – Experimental setup for measuring tolerance to the transmitter incident light
power . 18
Figure A.1 – Model for incidence into ONU receiver . 22
Figure A.2 – Example system to measure tolerance to the reflected optical power . 23
Figure A.3 – Recommended system to measure tolerance to the reflected optical
power . 23

Table 1 – Absolute maximum ratings . 11
Table 2 – Operating environment . 12

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SIST EN IEC 62149-5:2020
IEC 62149-5:2020 © IEC 2020 – 3 –
Table 3 – Electrical and optical characteristics . 13
Table 4 – Electrical interface characteristics (PECL type) . 15
Table 5 – Electrical interface characteristics (LVTTL type) . 15
Table 6 – Electrical interface characteristics of alarm output voltage (PECL type) . 16
Table 7 – Electrical interface characteristics of alarm output voltage (LVTTL type) . 16
Table 8 – Electrical interface characteristics of shutdown input voltage (both PECL and
LVTTL types) . 16
Table 9 – Transmitter section characterization tests . 19
Table 10 – Receiver section characterization tests . 20
Table 11 – Performance testing plan . 21

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SIST EN IEC 62149-5:2020
– 4 – IEC 62149-5:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PERFORMANCE STANDARDS –

Part 5: ATM-PON transceivers with LD driver and CDR ICs

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 62149-5 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This third edition cancels and replaces the second edition published in 2009 and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) description of types in Clause 4 has been removed;
b) titles of reference documents have been updated.

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SIST EN IEC 62149-5:2020
IEC 62149-5:2020 © IEC 2020 – 5 –
The text of this International Standard is based on the following documents:
FDIS Report on voting
86C/1667/FDIS 86C/1678/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.
A list of all parts of IEC 62149 series, published under the general title Fibre optic active
components and devices – Performance standards, 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.

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SIST EN IEC 62149-5:2020
– 6 – IEC 62149-5:2020 © IEC 2020
INTRODUCTION
Fibre optic transceivers are used to convert electrical signals into optical signals and vice versa.
The optical performance criteria are generally well specified for a number of internationally
agreed applications areas such as ITU-T Recommendation G.983.1 and IEEE Std 802.3. This
document aims to assure inter-changeability in performance between fibre optic transceivers
for ATM-PON (ATM-based broadband passive optical network) systems supplied by different
manufacturers but does not guarantee operation between fibre optic transceivers.
Manufacturers using this document are responsible for meeting the required performance
and/or reliability and quality assurance under a recognized scheme.

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SIST EN IEC 62149-5:2020
IEC 62149-5:2020 © IEC 2020 – 7 –
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PERFORMANCE STANDARDS –

Part 5: ATM-PON transceivers with LD driver and CDR ICs



1 Scope
This part of IEC 62149 specifies performance on the transceiver modules for asynchronous-
transfer-mode passive optical network (ATM-PON) systems recommended by the International
Telecommunication Union (ITU) in ITU-T Recommendation G.983.1.
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 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60332-3-24, Tests on electric and optical fibre cables under fire conditions – Part 3-24:
Test for vertical flame spread of vertically-mounted bunched wires or cables – Category C
IEC 60825-1, Safety of laser products – Part 1: Equipment classification and requirements
IEC 60950-1, Information technology equipment – Safety – Part 1: General requirements
IEC 61000-6-3, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission
standard for residential, commercial and light-industrial environments
IEC 61280-1-1, Fibre optic communication subsystem basic test procedures – Part 1-1: Test
procedures for general communication subsystems – Transmitter output optical power
measurement for single-mode optical fibre cable
IEC 61280-1-3, Fibre optic communication subsystem test procedures – Part 1-3: General
communication subsystems – Central wavelength and spectral width measurement
IEC 61280-2-2, Fibre optic communication subsystem test procedures – Part 2-2: Digital
systems – Optical eye pattern, waveform and extinction ratio measurement
IEC 61300-2-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-4: Tests – Fibre or cable retention
IEC 61300-2-17, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-17: Tests – Cold
IEC 61300-2-18, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-18: Tests – Dry heat – High temperature endurance

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SIST EN IEC 62149-5:2020
– 8 – IEC 62149-5:2020 © IEC 2020
IEC 61300-2-19, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-19: Tests – Damp heat (steady state)
IEC 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-22: Tests – Change of temperature
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 61753-1, Fibre optic interconnecting devices and passive components – Performance
standard – Part 1: General and guidance
IEC 62148-1, Fibre optic active components and devices – Package and interface standards –
Part 1: General and guidance
IEC 62150-2, Fibre optic active components and devices – Test and measurement procedures
– Part 2: ATM-PON transceivers
ITU-T Recommendation G.957:2006, Optical interfaces for equipments and systems relating to
the synchronous digital hierarchy
ITU-T Recommendation G.983.1:2005, Broadband optical access systems based on Passive
Optical Networks (PON)
3 Term, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms, definitions and abbreviated terms apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
NOTE Further terminology concerning related physical concepts, types of devices, general terms, and terms related
to ratings and characteristics can be found in IEC 61931. See also ITU-T Recommendation G.983.1.
3.1.1
optical access network
OAN
set of access links sharing the same network-side interfaces and supported by optical access
transmission systems
Note 1 to entry: The OAN can include a number of ODNs connected to the same OLT.
3.1.2
optical distribution network
ODN
apparatus or component that provides the optical transmission means from the OLT to the users
and vice versa
Note 1 to entry: The ODN utilizes passive optical components.

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IEC 62149-5:2020 © IEC 2020 – 9 –
3.1.3
optical line termination
OLT
apparatus that provides the network-side interface of the OAN and is connected to one or more
ODNs
3.1.4
optical network unit
ONU
apparatus that provides (directly or remotely) the user-side interface of the OAN, and is
connected to the ODN
3.2 Abbreviated terms
ATM-PON asynchronous transfer mode passive optical network
ATT attenuator
BER bit error ratio
CDR clock and data recovery
CMOS complementary metal-oxide semiconductor
DUT device under test
IC integrated circuit
LD laser diode
MLM multi-longitudinal mode
RMS root mean square
SLM single-longitudinal modes

4 Classification
Fibre optic transceiver modules are classified into several types of forms according to the
combination of mating types of electrical and optical interfaces (for details, see IEC 62148-1).
5 Product definition
5.1 Description of transceiver module
Information on the following devices constituting the optical transceiver module shall be stated.
This statement shall include details of technologies. For example, technologies used for ICs
such as CMOS, bipolar, etc., shall be described.
• For a transmitter:
– laser diode (in this description, a single- or a multi-longitudinal mode type shall be
specified);
– monitoring photodiode;
– driver IC;
– thermal sensor (where appropriate).
• For a receiver:
– photodiode;
– pre-amp IC;
– data/clock recovery IC.

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• For a wavelength division multiplexer device:
– technology used for this device.
• For a package:
– refer to the IEC 62148 series.
5.2 Description of applied form
According to ITU-T Recommendation G.983.1, the applied form of nominal bit rate, the class
(class B or class C), the applied unit (ONU or OLT), and the number of fibres (one for duplex
working or two for simplex working) shall be stated.
5.3 Block diagram
A block diagram or equivalent circuit information on the optical transceiver module shall be
given (see Figure 1).
The following terminals may be distinguished:
• supply terminals, i.e., terminals intended to be c
...

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