IEC 62148-6:2020

Fibre optic active components and devices - Package and interface standards - Part 6: ATM-PON transceivers

IEC 62148-6:2020 covers the physical interface specification of optical transceivers for asynchronous transfer mode-passive optical network (ATM-PON) systems recommended by the International Telecommunication Union (ITU) as ITU Recommendation G.983.1. This second edition cancels and replaces the first edition published in 2003, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- inconsistency of types in Clause 4 has been resolved;
- part and titles list in the Foreword has been deleted;
- references have been updated.

Composants et dispositifs actifs fibroniques - Normes de boîtier et d'interface - Partie 6: Emetteurs-récepteurs ATM-PON

L'IEC 62148-6:2020 couvre les spécifications d'interface physique des émetteurs-récepteurs optiques pour les systèmes de réseaux optiques passifs en mode de transfert asynchrone (ATM-PON: asynchronous transfer mode-passive optical network) qui suivent les recommandations données par l'Union Internationale des Télécommunications (UIT) dans la Recommandation G.983.1. Cette deuxième édition annule et remplace la première édition parue en 2003, dont elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- l'incohérence des types à l'Article 4 a été résolue;
- la liste des parties et des titres a été retirée de l'Avant-propos;
- les références ont été mises à jour.

General Information

• Status: Published
• Publication Date: 24-Feb-2020
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86C - Fibre optic systems, sensing and active devices
• Current Stage: PPUB - Publication issued
• Start Date: 25-Feb-2020
• Completion Date: 11-Mar-2020

Relations

• Revises: IEC 62148-6:2003 - Fibre optic active components and devices - Package and interface standards - Part 6: ATM-PON transceivers
• Effective Date: 05-Sep-2023

Overview

IEC 62148-6:2020 defines the physical interface for ATM-PON transceivers used in asynchronous transfer mode passive optical networks (ATM‑PON) as recommended by ITU‑T G.983.1. This second edition (2020) replaces the 2003 edition and provides a technical revision that resolves type inconsistencies in Clause 4 and updates references. The standard specifies the mechanical, optical and electrical interfaces needed for mechanical interchangeability of optical transceivers at the printed circuit board (PCB) and panel level.

Key topics and technical requirements

• Scope: Physical interface specification for optical transceivers in ATM‑PON systems (ONU modules), focusing on mechanical interchangeability and PCB mounting.
• Module form: Defines a 24‑pin through‑hole package designed as a pigtail-type transceiver (Type 3) with direct solderable electrical terminals.
• Electrical interface:
  • Pin numbering and layout (see Figure 1 in the standard) for top-view with pins underneath.
  • Pin function definitions for transmitter and receiver sections (Tables 1 and 2). Key pins include Tx V / Rx V (power), Grounds, Data in/out (p/n), Clock in/out (p/n), Bias control (optional), Shut down, and Rx alarm.
  • Basic functional assignments only - signaling and protocol specifics referenced to ITU recommendations.
• Optical interface:
  • Pigtail interface compatible with fibres defined in IEC 60793-2, ITU‑T G.652 and G.657.
  • If pigtails are terminated with connectors, applicable connector standards are IEC 60874 and IEC 61754.
• Mechanical details:
  • Case outline and footprint drawings (Figures 2 and 3) with dimensional limits to support PCB layout and panel mounting.
• Normative references: Includes IEC 62148‑1 (general guidance), various IEC optical fibre/connector standards, and ITU‑T recommendations.

Practical applications

• Ensures mechanical and basic electrical interchangeability of ATM‑PON ONU transceivers across suppliers.
• Used by optical transceiver and module manufacturers for product design, PCB footprinting and mechanical specifications.
• Guides system integrators, OEMs and network equipment vendors when specifying ONU modules for ATM‑PON systems.
• Supports test labs and conformity assessment bodies in verifying physical and pin‑assignment compliance.

Who should use this standard

• Fibre‑optic transceiver designers and hardware engineers
• Access network equipment manufacturers (OLT/ONU vendors)
• PCB layout engineers and mechanical designers
• Standards and compliance professionals in telecom and optical access networks

Related standards

• IEC 62148‑1 (general and guidance)
• IEC 60793 (optical fibres)
• IEC 60874, IEC 61754 (connectors)
• ITU‑T G.983.1, G.652, G.657

Keywords: IEC 62148-6:2020, ATM-PON transceivers, optical transceivers, physical interface, pigtail interface, 24-pin package, ITU G.983.1, ONU, OLT, fibre optic standards.

Standards Content (Sample)

IEC 62148-6 ®
Edition 2.0 2020-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic active components and devices – Package and interface standards –
Part 6: ATM-PON transceivers
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 62148-6 ®
Edition 2.0 2020-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic active components and devices – Package and interface standards –

Part 6: ATM-PON transceivers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-7930-4

– 2 – IEC 62148-6:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Classification . 7
5 Optical interface . 8
5.1 General . 8
5.2 Pigtail interface . 8
6 Electrical interface . 8
6.1 General . 8
6.2 Numbering of electrical terminals . 8
6.3 Electrical terminal assignment . 8
7 Outline. 9
7.1 Drawing of case outline . 9
7.2 Drawing of case footprint . 10
Bibliography . 12

Figure 1 – Numbering assignments of electrical terminals (viewed from above with
pins underneath) . 8
Figure 2 – Case outline . 10
Figure 3 – Case footprint . 11

Table 1 – Pin function definitions: transmitter section of the transceiver . 9
Table 2 – Pin function definitions: receiver section of the transceiver . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 6: ATM-PON transceivers
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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change has
been made. Additions are in green text, deletions are in strikethrough red text.

– 4 – IEC 62148-6:2020 RLV © IEC 2020
International Standard IEC 62148-6 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 2003, and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) inconsistency of types in Clause 4 has been resolved;
b) part and titles list in the Foreword has been deleted;
c) references have been updated.
The text of this International Standard is based on the following documents:
CDV Report on voting
86C/1590/CDV 86C/1613/RVC
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 in the IEC 62148 series, published under the general title Fibre optic active
components and devices – Package and interface 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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

INTRODUCTION
Fibre optic transceivers are used to convert electrical signals into optical signals and vice versa.
This document covers the physical interface for transceivers for ATM-PON systems. This
transceiver is designed as a 24-pin package for use with through holes on the printed circuit
board.
– 6 – IEC 62148-6:2020 RLV © IEC 2020
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 6: ATM-PON transceivers
1 Scope
This part of IEC 62148 covers the physical interface specification of optical transceivers for
asynchronous transfer mode-passive optical network (ATM-PON) systems recommended by the
International Telecommunication Union (ITU) as ITU 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 60793: all parts, Optical fibres
IEC 60793-2 (all parts), Optical fibres – Part 2: Product specifications
IEC 60874 (all parts), Fibre optic interconnecting devices and passive components –
Connectors for optical fibres and cables
IEC 61754 (all parts), Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces
IEC 62148-1, Fibre optic active components and devices – Package and interface standards –
Part 1: General and guidance
ITU-T Recommendation G.652, Characteristics of a single-mode optical fibre and cable
ITU-T Recommendation G.657, Characteristics of a bending-loss insensitive single-mode
optical fibre and cable
ITU-T Recommendation G.983.1, Broadband optical access systems based on Passive Optical
Networks (PON)
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62148-1,
ITU-T Recommendation G.983.1 and the following 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

3.1.1
OAN
optical access network
set of access links sharing the same network-side interfaces and supported by optical access
transmission systems
Note 1 to entry: The OAN may can include a number of ODNs connected to the same OLT.
Note 2 to entry: This note applies to the French language only.
3.1.2
ODN
optical distribution network
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.
Note 2 to entry: This note applies to the French language only.
3.1.3
OLT
optical line termination
apparatus that provides the network-side interface of the OAN, and is connected to one or more
ODNs
Note 1 to entry: This note applies to the French language only.
3.1.4
ONU
optical network unit
apparatus that provides (directly or remotely) the user-side interface of the OAN, and is
connected to the ODN
Note 1 to entry: This note applies to the French language only.
3.2 Abbreviated terms
ATM-PON asynchronous transfer mode-passive optical network
CDR clock and data recovery
LD laser diode
IC integrated circuit
4 Classification
This document, which gives the interface standards of optical transceiver modules for ATM-PON
systems, specifies the interface of a type 3 module with LD driver circuits and clock and data
recovery (CDR) ICs for ONU module which is described in IEC 62148-1.
Fibre optic transceiver modules are classified into 5 types of forms according to the combination
of mating types of electrical and optical interfaces. Details are described in IEC 62148-1. The
5 types are as follows:
Type 1: Fibre optic connector interface with direct solderable type electrical terminals.
Type 2: Fibre optic connector interface with plug-in type electrical terminals.
Type 3: Fibre optic pigtail interface with direct solderable type electrical terminals.
Type 4: Fibre optic pigtail interface with plug-in type electrical terminals.
Type 5: Modules are not classified into type 1 – type 4. (A typical example is a module that
has both electrical connectors and non-connector type terminals as an electrical

– 8 – IEC 62148-6:2020 RLV © IEC 2020
interface such as a coaxial connector for signal and lead terminals for the power
supply.)
5 Optical interface
5.1 General
The intent of this document is to adequately specify the physical requirements of an optical
transceiver that will enable mechanical interchangeability of transceivers to this document both
at the printed circuit board and for any panel mounting requirement.
5.2 Pigtail interface
All optical fibres defined in IEC 60793-2 (all parts), ITU-T Recommendation G.652, and
ITU-T Recommendation G.657 are applicable.
All optical connectors defined in IEC 60874 (all parts) and IEC 61754 (all parts) are applicable
if a pigtail is to be terminated with an optical connector.
6 Electrical interface
6.1 General
The electrical interface in this document defines only the basic functionality of each pin.
6.2 Numbering of electrical terminals
Pin numbering assignments are shown in Figure 1 (electrical terminals viewed from the top of
the module with pins underneath).

Figure 1 – Numbering assignments of electrical terminals
(viewed from above with pins underneath)
6.3 Electrical terminal assignment
Electrical terminal assignment is based on Table 1 and Table 2, which provide the definitions
of the pin functions for the transmitter section and the receiver section of the transceiver,
respectively.
Table 1 – Pin function definitions: transmitter section of the transceiver
Pin number Terminal identification Functional description Notes
1 Tx V Transmitter power supply
CC
2 Tx GND Transmitter ground
3 Bias cont (p) Transmitter bias control, positive Optional
4 Bias cont (n) Transmitter bias control, negative Optional
5 NC
6 Clock in (p) Transmitter clock in, positive
7 Clock in (n) Transmitter clock in, negative
8 Tx GND Transmitter ground
9 Data in (p) Transmitter data in, positive
10 Data in (n) Transmitter data in, negative
11 Shut down Transmitter shut down
12 Tx V Transmitter power supply
cc
Table 2 – Pin function definitions: receiver section of the transceiver
Pin number Terminal identification Functional description
Rx V Receiver power supply
CC
14 NC
15 Data out (n) Receiver data out, negative
16 Data out (p) Receiver data out, positive
17 Rx GND Receiver ground
18 Clock out (n) Receiver clock out, negative
19 Clock out (p) Receiver clock out, positive
20 Rx alarm Receiver alarm
21 NC
22 NC
23 Rx GND Receiver ground
Rx V Receiver power supply
CC
7 Outline
7.1 Drawing of case outline
The case outline drawing, as well as the dimensions, are shown in Figure 2.

– 10 – IEC 62148-6:2020 RLV © IEC 2020

Dimensions of case outline
Minimum Maximum
Dimension Notes
mm mm
A 55,00
B 43,00
C 8,90
D 35,56 Basic dimension
E 3,72
a
F 35,56
G 24,52
b
H 27,94 Basic dimension
J 0,45 0,70
K 0,15 8,75
L 3,10
c
M 40,00 Strain relief
a
This item shall be specified by each vendor.
b
All 24 pins are treated as a single pattern.
c
Some vendors do not use the strain relief.
Figure 2 – Case outline
7.2 Drawing of case footprint
The drawing of the case footprint and the dimensions are shown in Figure 3.

a
These items shall be specified by each vendor.
Dimensions of case footprint
Minimum Maximum
Dimension Notes
mm mm
a 55,00
b 43,00
d 35,56 Basic dimension
e 3,72
f 0,0 35,56
g 2,54
a
h 27,94
Basic dimension
j 0,8 1,0
a
Pin holes 11 × 2,54 pitch
Figure 3 – Case footprint
– 12 – IEC 62148-6:2020 RLV © IEC 2020
Bibliography
IEC 60130 (all parts), Connectors for frequencies below 3 MHz
IEC 60191 (all parts), Mechanical standardization of semiconductor devices
IEC 60603 (all parts), Connectors for frequencies below 3 MHz for use with printed boards
electronic equipment
IEC 60794 (all parts), Optical fibre cables
IEC 60807 (all parts), Rectangular connectors for frequencies below 3 MHz
IEC 60825 (all parts), Safety of laser products
IEC 61076: all parts, Connectors with assessed quality, for use in d.c., low frequency analogue
and in digital high speed data applications
IEC 61076 (all parts), Connectors for electrical and electronic equipment – Product
requirements
IEC 61281-1, Fibre optic communication subsystems – Part 1: Generic specification
IEC 61754: all parts, Fibre optic connector interfaces
ISO 1101: Technical drawings – Geometrical tolerancing – Tolerancing of form, orientation,
location and run-out – Generalities, definitions, symbols, indications on drawings
ISO 1101, Geometrical product specifications (GPS) – Geometrical tolerancing – Tolerances of
form, orientation, location and run-out

___________
IEC 62148-6 ®
Edition 2.0 2020-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic active components and devices – Package and interface standards –
Part 6: ATM-PON transceivers
Composants et dispositifs actifs fibroniques – Normes de boîtier et d'interface –
Partie 6: Emetteurs-récepteurs ATM-PON

– 2 – IEC 62148-6:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Classification . 7
5 Optical interface . 7
5.1 General . 7
5.2 Pigtail interface . 8
6 Electrical interface . 8
6.1 General . 8
6.2 Numbering of electrical terminals . 8
6.3 Electrical terminal assignment . 8
7 Outline. 9
7.1 Drawing of case outline . 9
7.2 Drawing of case footprint . 10
Bibliography . 12

Figure 1 – Numbering assignments of electrical terminals (viewed from above with
pins underneath) . 8
Figure 2 – Case outline . 10
Figure 3 – Case footprint . 11

Table 1 – Pin function definitions: transmitter section of the transceiver . 9
Table 2 – Pin function definitions: receiver section of the transceiver . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 6: ATM-PON transceivers
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 62148-6 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optic
...

IEC 62148-6 ®
Edition 2.0 2020-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic active components and devices – Package and interface standards –
Part 6: ATM-PON transceivers
Composants et dispositifs actifs fibroniques – Normes de boîtier et d'interface –
Partie 6: Emetteurs-récepteurs ATM-PON

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and once 67 000 electrotechnical terminology entries in English and
a month by email. French extracted from the Terms and Definitions clause of IEC
publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or need CISPR.

further assistance, please contact the Customer Service

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IEC 62148-6 ®
Edition 2.0 2020-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic active components and devices – Package and interface standards –

Part 6: ATM-PON transceivers
Composants et dispositifs actifs fibroniques – Normes de boîtier et d'interface –

Partie 6: Emetteurs-récepteurs ATM-PON

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-7902-1

– 2 – IEC 62148-6:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Classification . 7
5 Optical interface . 7
5.1 General . 7
5.2 Pigtail interface . 8
6 Electrical interface . 8
6.1 General . 8
6.2 Numbering of electrical terminals . 8
6.3 Electrical terminal assignment . 8
7 Outline. 9
7.1 Drawing of case outline . 9
7.2 Drawing of case footprint . 10
Bibliography . 12

Figure 1 – Numbering assignments of electrical terminals (viewed from above with
pins underneath) . 8
Figure 2 – Case outline . 10
Figure 3 – Case footprint . 11

Table 1 – Pin function definitions: transmitter section of the transceiver . 9
Table 2 – Pin function definitions: receiver section of the transceiver . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 6: ATM-PON transceivers
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 62148-6 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 2003, and constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) inconsistency of types in Clause 4 has been resolved;
b) part and titles list in the Foreword has been deleted;
c) references have been updated.
The text of this International Standard is based on the following documents:
CDV Report on voting
86C/1590/CDV 86C/1613/RVC
– 4 – IEC 62148-6:2020 © IEC 2020

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 in the IEC 62148 series, published under the general title Fibre optic active
components and devices – Package and interface 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.
INTRODUCTION
Fibre optic transceivers are used to convert electrical signals into optical signals and vice versa.
This document covers the physical interface for transceivers for ATM-PON systems. This
transceiver is designed as a 24-pin package for use with through holes on the printed circuit
board.
– 6 – IEC 62148-6:2020 © IEC 2020
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PACKAGE AND INTERFACE STANDARDS –

Part 6: ATM-PON transceivers
1 Scope
This part of IEC 62148 covers the physical interface specification of optical transceivers for
asynchronous transfer mode-passive optical network (ATM-PON) systems recommended by the
International Telecommunication Union (ITU) as ITU 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 60793-2 (all parts), Optical fibres – Part 2: Product specifications
IEC 60874 (all parts), Fibre optic interconnecting devices and passive components –
Connectors for optical fibres and cables
IEC 61754 (all parts), Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces
IEC 62148-1, Fibre optic active components and devices – Package and interface standards –
Part 1: General and guidance
ITU-T Recommendation G.652, Characteristics of a single-mode optical fibre and cable
ITU-T Recommendation G.657, Characteristics of a bending-loss insensitive single-mode
optical fibre and cable
ITU-T Recommendation G.983.1, Broadband optical access systems based on Passive Optical
Networks (PON)
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62148-1,
ITU-T Recommendation G.983.1 and the following 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

3.1.1
OAN
optical access network
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.
Note 2 to entry: This note applies to the French language only.
3.1.2
ODN
optical distribution network
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.
Note 2 to entry: This note applies to the French language only.
3.1.3
OLT
optical line termination
apparatus that provides the network-side interface of the OAN, and is connected to one or more
ODNs
Note 1 to entry: This note applies to the French language only.
3.1.4
ONU
optical network unit
apparatus that provides (directly or remotely) the user-side interface of the OAN, and is
connected to the ODN
Note 1 to entry: This note applies to the French language only.
3.2 Abbreviated terms
ATM-PON asynchronous transfer mode-passive optical network
CDR clock and data recovery
LD laser diode
IC integrated circuit
4 Classification
This document, which gives the interface standards of optical transceiver modules for ATM-PON
systems, specifies the interface of a type 3 module with LD driver circuits and clock and data
recovery (CDR) ICs for ONU module which is described in IEC 62148-1.
5 Optical interface
5.1 General
The intent of this document is to adequately specify the physical requirements of an optical
transceiver that will enable mechanical interchangeability of transceivers to this document both
at the printed circuit board and for any panel mounting requirement.

– 8 – IEC 62148-6:2020 © IEC 2020
5.2 Pigtail interface
All optical fibres defined in IEC 60793-2 (all parts), ITU-T Recommendation G.652, and
ITU-T Recommendation G.657 are applicable.
All optical connectors defined in IEC 60874 (all parts) and IEC 61754 (all parts) are applicable
if a pigtail is to be terminated with an optical connector.
6 Electrical interface
6.1 General
The electrical interface in this document defines only the basic functionality of each pin.
6.2 Numbering of electrical terminals
Pin numbering assignments are shown in Figure 1 (electrical terminals viewed from the top of
the module with pins underneath).

Figure 1 – Numbering assignments of electrical terminals
(viewed from above with pins underneath)
6.3 Electrical terminal assignment
Electrical terminal assignment is based on Table 1 and Table 2, which provide the definitions
of the pin functions for the transmitter section and the receiver section of the transceiver,
respectively.
Table 1 – Pin function definitions: transmitter section of the transceiver
Pin number Terminal identification Functional description Notes
1 Tx V Transmitter power supply
CC
2 Tx GND Transmitter ground
3 Bias cont (p) Transmitter bias control, positive Optional
4 Bias cont (n) Transmitter bias control, negative Optional
5 NC
6 Clock in (p) Transmitter clock in, positive
7 Clock in (n) Transmitter clock in, negative
8 Tx GND Transmitter ground
9 Data in (p) Transmitter data in, positive
10 Data in (n) Transmitter data in, negative
11 Shut down Transmitter shut down
12 Tx V Transmitter power supply
cc
Table 2 – Pin function definitions: receiver section of the transceiver
Pin number Terminal identification Functional description
Rx V Receiver power supply
CC
14 NC
15 Data out (n) Receiver data out, negative
16 Data out (p) Receiver data out, positive
17 Rx GND Receiver ground
18 Clock out (n) Receiver clock out, negative
19 Clock out (p) Receiver clock out, positive
20 Rx alarm Receiver alarm
21 NC
22 NC
23 Rx GND Receiver ground
Rx V Receiver power supply
CC
7 Outline
7.1 Drawing of case outline
The case outline drawing, as well as the dimensions, are shown in Figure 2.

– 10 – IEC 62148-6:2020 © IEC 2020

Dimensions of case outline
Minimum Maxi
...