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 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. 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:
- description of types in Clause 4 has been removed;
- titles of reference documents have been updated.

Composants et dispositifs actifs fibroniques - Normes de performances - Partie 5: Emetteurs-récepteurs ATM-PON avec programme de gestion LD et CI CDR

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.

General Information

• Status: Published
• Publication Date: 17-Aug-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: 18-Aug-2020
• Completion Date: 07-Aug-2020

Relations

• Revises: IEC 62149-5:2009 - Fibre optic active components and devices - Performance standards - Part 5: ATM-PON transceivers with LD driver and CDR ICs
• Effective Date: 05-Sep-2023

Overview

IEC 62149-5:2020 - "Fibre optic active components and devices - Performance standards - Part 5: ATM‑PON transceivers with LD driver and CDR ICs" is the third edition performance standard for transceiver modules used in ATM‑PON (Asynchronous Transfer Mode Passive Optical Network) systems referenced by ITU‑T Recommendation G.983.1. Published by the IEC in 2020, this edition replaces the 2009 version and updates normative references and clause content (notably removing the previous description of types in Clause 4). The standard focuses on defining measurable performance, interfaces and test requirements to promote interchangeability of fibre optic ATM‑PON transceivers (laser‑diode (LD) driver + clock‑data recovery (CDR) IC implementations).

Key topics

• Scope and product definition
  • Performance requirements for ATM‑PON transceiver modules with LD drivers and CDR ICs.
  • Functional block diagrams, absolute maximum ratings and functional specifications.
• Electrical and optical characteristics
  • Defined transmitter and receiver parameters and interface types (e.g., PECL, LVTTL).
  • Tables for electrical/optical characteristics and alarm/shutdown signaling.
• Testing and characterization
  • Characterization tests for transmitter and receiver sections.
  • Performance testing plans and measurement procedures (optical power, eye pattern, extinction ratio).
  • Annexes for specialized tests (e.g., tolerance to reflected optical power; alarm/shutdown logic).
• Environmental and safety requirements
  • Environmental testing references (vibration, shock, temperature, humidity).
  • Laser safety (IEC 60825‑1) and EMC emission requirements (IEC 61000‑6‑3).
• Normative references
  • Cross‑referencing to related IEC test procedures and performance standards (e.g., IEC 62150‑2, IEC 61280, IEC 61300, IEC 61753‑1).

Applications

• Who uses this standard
  • Fibre optic transceiver manufacturers designing ATM‑PON modules with LD drivers and CDR ICs.
  • Test laboratories and QA teams performing characterization, compliance and interchangeability testing.
  • Network equipment vendors, systems integrators and service providers procuring ATM‑PON transceivers.
  • Certification bodies assessing product conformity to international performance criteria.
• Practical value
  • Ensures consistent, testable performance criteria across suppliers to simplify procurement and interoperability efforts.
  • Provides standardized test methods and interface definitions used during design verification and production testing.

Related standards (if applicable)

• IEC 62149 series (other parts)
• IEC 62148‑1 (package and interface)
• IEC 62150‑2 (ATM‑PON test procedures)
• IEC 61280 series (optical test procedures)
• IEC 61300 series (basic test and measurement procedures)
• IEC 60825‑1 (laser safety), IEC 61000‑6‑3 (EMC), IEC 61753‑1 (performance guidance)

Keywords: IEC 62149-5:2020, ATM‑PON, transceivers, LD driver, CDR ICs, fibre optic transceiver, performance standard, ITU‑T G.983.1, testing, characterization, laser safety.

Standards Content (Sample)

IEC 62149-5 ®
Edition 3.0 2020-08
REDLINE VERSION
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STANDARD
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Fibre optic active components and devices – Performance standards –
Part 5: ATM-PON transceivers with LD driver and CDR ICs

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IEC 62149-5 ®
Edition 3.0 2020-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic active components and devices – Performance standards –

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

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-8796-5

– 2 – IEC 62149-5:2020 RLV © 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 . 11
5.5 Functional specification . 12
6 Testing . 20
6.1 General . 20
6.2 Characterization testing . 20
6.2.1 Characterization: transmitter section. 21
6.2.2 Characterization: receiver section . 22
6.3 Performance testing . 22
7 Environmental specifications . 23
7.1 General safety . 23
7.2 Laser safety . 23
7.3 Electromagnetic emission . 23
Annex A (informative) Measurement on tolerance to the reflected optical power
(Table 3, item 13) . 24
Annex B (informative) Logic level of alarm and shutdown signal . 26
Bibliography . 27

Figure 1 – Functional block diagram (example) . 11
Figure 2 – Relationship of phase between clock and data signals . 18
Figure 3 – Recommended electrical circuit diagram for LVTTL-type interface
(examples) . 19
Figure 4 – Schematic drawing for defining launched optical power without input to
transmitter . 19
Figure 5 –– Schematic drawing for defining launched optical power
without input to transmitter Experimental setup for measuring tolerance
to the transmitter incident light power . 20
Figure A.1 – Model for incidence into ONU receiver . 24
Figure A.2 – Example system to measure tolerance to the reflected optical power . 25
Figure A.3 – Recommended system to measure tolerance to the reflected optical
power . 25

Table 1 – Absolute maximum ratings . 12

Table 2 – Operating environment . 13
Table 3 – Electrical and optical characteristics . 14
Table 4 – Electrical interface characteristics (PECL type) . 16
Table 5 – Electrical interface characteristics (LVTTL type) . 17
Table 6 – Electrical interface characteristics of alarm output voltage (PECL type) . 17
Table 7 – Electrical interface characteristics of alarm output voltage (LVTTL type) . 18
Table 8 – Electrical interface characteristics of shutdown input voltage (both PECL and
LVTTL types) . 18
Table 9 – Transmitter section characterization tests . 21
Table 10 – Receiver section characterization tests . 22
Table 11 – Performance testing plan . 23

– 4 – IEC 62149-5:2020 RLV © 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
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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
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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.
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.
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.

– 6 – IEC 62149-5:2020 RLV © 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.

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 60068-2-6:2007, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-27:2008, 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 60825-1:2007, Safety of laser products – Part 1: Equipment classification and requirements
IEC 60950-1:2005, 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 61280-1-1:1998, 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 61280-1-3:1998, Fibre optic communication subsystem basic test procedures – Part 1-3:
Test procedures for General communication subsystems – Central wavelength and spectral
width measurement
IEC 61280-2-2:2008, Fibre optic communication subsystem test procedures – Part 2-2: Digital
systems – Optical eye pattern, waveform and extinction ratio measurement
IEC 61300-2-4:1995, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-4: Tests – Fibre/ or cable retention
IEC 61300-2-17:2003, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-17: Tests – Cold
IEC 61300-2-18:2005, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-18: Tests – Dry heat – High temperature endurance

– 8 – IEC 62149-5:2020 RLV © IEC 2020
IEC 61300-2-19:2005, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-19: Tests – Damp heat (steady state)
IEC 61300-2-22:2007, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-22: Tests – Change of temperature
IEC 61300-3-6:2003, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61753-1:2007, Fibre optic interconnecting devices and passive components – Performance
standard – Part 1: General and guidance for performance standards
IEC 61931, Fibre optic – Terminology
IEC 62148-1, Fibre optic active components and devices – Package and interface standards –
Part 1: General and guidance
IEC 62150-2:2004, 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 may 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.

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
ERD Error ratio detector
EX Extinction ratio
FTT Cab/C/B/H Fibre to the cabinet/curb/building/home
IC integrated circuit
LD laser diode
MLM multi-longitudinal mode
PPG Pulse pattern generator
RMS root mean square
SLM single-longitudinal modes
4 Classification
Fibre optic transceiver modules are classified into 5 several types of forms according to the
combination of mating types of electrical and optical interfaces (for details, see IEC 62148-1).
Those combinations include the following:
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 to type 4. (A typical example is a module that
has both electrical connectors and non-connector type terminals as an electrical
interface such as a coaxial connector for signal and lead terminals for the power
supply.)
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.

– 10 – IEC 62149-5:2020 RLV © IEC 2020
• 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.
• For a wavelength division multiplexer device:
– technology used for this device.
• For a package:
– refer to the IEC document number standardized as a package interface standard
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 connected to the power supplies;
• input and output terminals, i.e., terminals into or out of which signals are passed.
The term "signal" includes both pulse and more complex waveforms and includes strobe or
control pulses.
Figure 1 – Functional block diagram (example)
5.4 Absolute limiting rating
Absolute limiting (maximum) ratings imply that no catastrophic damage will occur if the product
is subjected to these ratings for short periods, provided each limiting parameter is in isolation
and all other parameters have values within the normal performance parameters. It should not
be assumed that limiting values of more than one parameter could be applied at any one time.

– 12 – IEC 62149-5:2020 RLV © IEC 2020
Table 1 – Absolute maximum ratings
Letter
Items Condition Requirements Units
symbol
Minimum Maximum
a
T
Storage temperature –40 85
stg °C
H
Storage relative humidity 5 95 %
stg
Bend radius of pigtail for type 3, 4, and 5
transceivers (at specified distance from the r 30 mm
b
case)
Pulse cycle
c 2
Shock duration: 18 ms  300 m/s
3 times/axis
10 Hz to 55 Hz,
d 2
3 axes, 1,5 mm,  100
Vibration m/s
2 h
Tensile force on devices with pigtail
e
Buffer-coated fibre 5
F N
e
Reinforced fibre
Electrical limiting values
V
SUPmax
– Power supply voltage −0,5 4,0 V
U
SUPmax
V
INmax
V U
– Input voltage −0,5 V
sup sup
U
INmax
V
V U +
OUTmax
sup sup
– Output voltage 0 V
U
0,5
OUTmax
– Output current
I
PECL interface 0 50 mA
OUTmax
LVTTL interface −20 20
Optical limiting values
P
– Permissible input power −5 dBm
in
a
Ambient temperature and humidity for outdoor ONU is under further study in
ITU-T Recommendation G.983.1, thus these specifications may be varied in the future.
b
IEC 62148-1 shall be referred to for detail.
c
IEC 60068-2-27 shall be referred to for detail.
d
IEC 60068-2-6 shall be referred to for detail.
e
For the requirements see The requirements of IEC 61753-1 shall be applied.

5.5 Functional specification
Electro-optical characteristics for the items in Table 3 shall be satisfied at the operating
environmental conditions specified in Table 2.
NOTE Optical characteristics specified in ITU-T Recommendation G.983.1 should be satisfied.
Each electrical and optical characteristics of 5.5 shall be measured under conditions specified
in each reference.
Each electrical and optical characteristic of 5.5 shall be stated under specified worst-case
conditions, with respect to the recommended range of operating conditions as stated. The
measuring method of each electrical and optical characteristics specified in Table 3 shall be
measured based on the method stated in the reference of each row.

Table 2 – Operating environment
Letter
Items Requirements Units
symbol
Minimum Typical Maximum
V U
Power supply voltage 3,135 3,3 3,465 V
SUP SUP
a
T –5 75
Operating case temperature
case °C
a
RH 5 95 %
Ambient relative humidity
a
Operating case temperature and humidity for outdoor ONU is under further study in
ITU-T Recommendation G.983.1, thus these specifications may be varied in the future.

– 14 – IEC 62149-5:2020 RLV © IEC 20200

Table 3 – Electrical and optical characteristics
Requirements
Item number Items Letter symbol Units Reference
Minimum Typical Maximum
1 Nominal bit rate B 155,52 Mb/s
a
Mean launched power
P
2 –4 +2 dBm IEC 61280-1-1
– Class B
mean
– Class C –2 +4
3 Transmitter wavelength λ 1 260 1 360 nm IEC 61280-1-3
b
4 Mask of transmitter eye diagram –
Ex r
5 Extinction ratio 10  dB IEC 61280-2-2
Ex
6 For MLM laser, maximum RMS width ∆λ  5,8 nm IEC 61280-1-3
7 For SLM laser, maximum –20 dB width ∆λ  1,0 nm IEC 61280-1-3
SMSR r
8 For SLM laser, minimum side mode suppression ratio 30  dB IEC 61280-1-3
SMSR
R
9 Maximum reflectance measured at transmitter wavelength –6  dB IEC 61300-3-6, 4.1
TX
Receiver overload:
S
10 – Class B –8  dBm IEC 62150-2
O
– Class C –11
Receiver sensitivity:
11 – Class B S  –30 dBm IEC 62150-2
– Class C –33
R
12 Maximum reflectance measured at receiver wavelength –20  dB IEC 61300-3-6, 4.1
RX
ITU-T G.957:2006,
c
13 Tolerance to the reflected optical power  10 dB
Appendix III
14 Clock input voltage (high) See Table 4 and Table 5
15 Clock input voltage (low) See Table 4 and Table 5
16 Clock input voltage (swing centre) See Table 4 and Table 5
17 Data input voltage (high) See Table 4 and Table 5
18 Data input voltage (low) See Table 4 and Table 5
19 Data input voltage (swing centre) See Table 4 and Table 5
20 Clock output voltage (high) See Table 4 and Table 5
21 Clock output voltage (low) See Table 4 and Table 5

Requirements
Item number Items Letter symbol Units Reference
Minimum Typical Maximum
22 Data output voltage (high) See Table 4 and Table 5
23 Data output voltage (low) See Table 4 and Table 5
d
24 See Table 6 and Table 7 IEC 62150-2
Alarm output voltage (high)
d
25 See Table 6 and Table 7 IEC 62150-2
Alarm output voltage (low)
e
26 See Table 8 IEC 62150-2
Shutdown input voltage (high)
e
27 See Table 8 IEC 62150-2
Shutdown input voltage (low)
f
U
28 Bias control voltage (high)
BiasH
f
U
29 Bias control voltage (low)
BiasL
30 Line code Scrambled NRZ
g
Launched optical power without input to transmitter
31 −40  dBm IEC 61280-1-1
– Class B
−43
– Class C
g
32 −15  dB
Tolerance to the transmitter incident light power
b
Consecutive identical digit immunity
b
34 Jitter generation
b
35 Jitter tolerance
b
Jitter transfer
a
Pseudo random data shall be put into the transmitter according to the specification of 8.2.6.3 of ITU-T Recommendation G.983.1:2005.
b
These items shall be specified so as to meet the specifications of ITU-T Recommendation G. 983.1.
c
This item shall be measured based on the measuring method described in the reference. See Annex A for more detail.
d
With logic ‘low’, an alarm signal is effective. The alarm test shall be done whether logic ‘low’ is put out when no optical power is launched to the transceiver, and logic ‘high’ is
put out when optical power more than that specified in item 11 is launched to the transceiver (see Annex B).
e
With logic ‘low’, a shutdown signal is effective. The shutdown test shall be done whether optical power less than that specified in item 31 is launched when logic ‘low’ is put into
the ‘shutdown’ terminal, and optical power within the range specified in item 2 is launched when logic ‘high’ is put into the ‘shutdown’ terminal (see Annex B).
f
These items shall be specified between vendors and users.
g
Measurement methods on these items are stated in 5.5.

– 16 – IEC 62149-5:2020 RLV © IEC 2020
The clock and data input/output interface shall be satisfied with either the specification listed in
Table 4 or Table 5. The interface specifications characterized by each table are normally
referred to as PECL and LVTTL interfaces, respectively. New interface dimensions will be added
properly.
Table 4 – Electrical interface characteristics (PECL type)
Requirements
Items Letter symbol Units
Minimum Typical Maximum
V
CINH
- V
SUP
Clock input voltage (high) −1,17 −0,88 V
U −
CINH
U
SUP
V
CINL
- V
−1,43
SUP
Clock input voltage (low) −1,81 V
U −
CINL
U
SUP
V
DINH
- V
SUP
Data input voltage (high) −1,17 −0,88 V
U −
DINH
U
SUP
V
DINL
- V
sup
Data input voltage (low) −1,81 −1,43 V
U −
DINL
U
sup
V
COUTH
- V
SUP
a
Clock output voltage (high) −0,96 V
U −
COUTH
U
SUP
V
COUTL
- V
SUP
a
−1,71 V
Clock output voltage (low)
U −
COUTL
U
SUP
V
DOUTH
- V
SUP
a
Data output voltage (high) −0,96 V
U −
DOUTH
U
SUP
V
DOUTL
- V
SUP
a
−1,71 V
Data output voltage (low)
U −
DOUTL
U
SUP
a
Outputs terminated to V U – 2 V.
SUP SUP
Table 5 – Electrical interface characteristics (LVTTL type)
Letter
Items Requirements Units
symbol
Minimum Typical Maximum
V
CINL
V U V U
Clock input voltage (high) V
CINH CINH SUP SUP
U + 0,3
CINL
V
CINH
V U
U −
Clock input voltage (low) 0 V
CINL CINL
CINH
0,3
V /U /
V SUP SUP
V /U /
Ccenter
SUP SUP
Clock input voltage (swing centre) V
U
2 + 0,1
Ccenter
− 0,1
V
DINL
V U V U
Data input voltage (high) V
DINH DINH SUP SUP
U + 0,3
DINL
V
DINH
V U
Data input voltage (low) 0 U + V
DINL DINL
DINH
0,3
V /U /
SUP SUP
V /U /
V U
SUP SUP
Dcenter Dce
Data input voltage (swing centre) V
nter 2 + 0,1
− 0,1
V
V U TT
a
COUTH CO
Clock output voltage (high) V

U + 0,4
UTH
TT
V
V U TT
a
COUTL CO
Clock output voltage (low) V
U − 0,4
UTL
TT
V
V U
TT
a
DOUTH DO
Data output voltage (high) V
U + 0,4
UTH
TT
V
V U
TT
a
DOUTL DO
Data output voltage (low) V
U – 0,4
UTL
TT
a
V U = 1,5 V to 1,8 V
TT TT
The alarm output interface shall be satisfied with either the specification listed in Table 6 or
Table 7. The interface specifications characterized by each table are normally referred to as
PECL and LVTTL interfaces, respectively. New interface dimensions will be added properly.
Table 6 – Electrical interface characteristics of alarm output voltage (PECL type)
Requirements
Letter
Items Units
symbol
Minimum Typical Maximum
a
V U 2,4  V
Alarm output voltage (high)
ALH ALH
a
V U  0,4 V
Alarm output voltage (low)
ALL ALL
a
Test shall be performed with current at high level, I = –2 mA, and current at low level, I = 2 mA, at V
ALH ALL SUP
between 3,135 V and 3,465 V.
– 18 – IEC 62149-5:2020 RLV © IEC 2020
Table 7 – Electrical interface characteristics of alarm output voltage (LVTTL type)
Requirements
Letter
Items Units
symbol
Minimum Typical Maximum
V
SUP
a
V U
Alarm output voltage (high) V
ALH ALH
U − 0,2
SUP
a
V U
Alarm output voltage (low) 0,2 V
ALL ALL
a
Test shall be performed with current at high level, I = –100 µA, and current at low level, I = 100 µA, at
ALH ALL
V U between 3,135 V and 3,465 V.
SUP SUP
Shutdown input interface shall be satisfied with either specifications listed in Table 8. New
interface dimensions will be added properly.
Table 8 – Electrical interface characteristics of shutdown input voltage
(both PECL and LVTTL types)
Requirements
Letter
Items Units
symbol
Minimum Typical Maximum
V V
SDH SUP
a
2,0 V
Shutdown input voltage (high)
U U + 0,3
SDH SUP
V
SDL
a
–0,3 0,8 V
Shutdown input voltage (low)
U
SDL
a
Test shall be performed with V U between 3,135 V and 3,465 V.
SUP SUP
NOTE The interfaces listed in Table 6, Table 7 and Table 8 refer to EIA/JEDEC JESD8-B, with the exception of
power supply voltage V U , which is definitely specified in Table 2.
SUP SUP
Relationship of the phase between clock and data signals is shown in Figure 2. Phase of data
signals are timed so that data signals are latched at a fall time of clock.

Figure 2 – Relationship of phase between clock and data signals
Examples of recommended electrical circuit diagrams for LVTTL-type interface are shown in
Figure 3 a) and b).
a) With standard termination
b) With Thevenin termination
Figure 3 – Recommended electrical circuit diagram for LVTTL-type interface (examples)
Launched optical power without input to transmitter (Table 3, item 31) is schematically defined
in Figure 4. The measuring method of the power shall basically follow IEC 61280-1-1, but it
shall be specified in detail between vendors and users.

Figure 4 – Schematic drawing for defining launched optical power
without input to transmitter
– 20 – IEC 62149-5:2020 RLV © IEC 2020
Tolerance to the transmitter incident light power (Table 3, item 32) is measured, for example,
by an experimental setup shown in Figure 5. The value of reflection at the reflector is set so
that incident light power back to the transmitter is 15 dB less than that of mean transmitter
launching power. Pass/fall fail criteria depend on whether or not the waveform of signals
transmitted from the DUT and monitored at the waveform monitor satisfies the eye mask
specified in Table 3, item 4.
Figure 5 – Schematic drawing for defining launched optical power
without input to transmitter Experimental setup for measuring tolerance
to the transmitter incident light power
6 Testing
6.1 General
Initial characterization and qualification shall be undertaken. Qualification maintenance is
carried out using periodic testing programs. Test case temperature conditions for all tests,
unless otherwise stated, are 25 °C ± 2 °C.
6.2 Characterization testing
Characterization testing including both transmitter and receiver sections shall be carried out
based on the specifications listed in Table 9 for the transmitter section and Table 10 for the
receiver section. This testing shall be carried out on at least 11 products taken from a
manufacturing lot for each user. The testing lot shall be specified by each supplier. If any
changes occur in the design of the transceiver, the testing shall be carried out again.

6.2.1 Characterization: transmitter section
Table 9 – Transmitter section characterization tests
Test limit Test limit
Parameters Test conditions Unit
minimum maximum
As a minimum, 11 devices taken from a

manufacturing lot for each user to be
measured at case temperatures of

(−5 ± 2) °C, (25 ± 2) °C and (75 ± 2) °C and
V U at (V U − 5 %) V, (V U ) V
cc cc nom nom nom nom
and (V U + 5 %) V
nom nom
Single-mode fibre, PRBS 2 – 1 at

155,52 Mbit/s modulation
Mean launched power
−4,0 +2,0 dBm
– Class B
−2,0 +4,0
– Class C
Central wavelength
1 260 1 360 nm
PRBS 2 – 1 at 155,52 Mbit/s modulation

PRBS 2 – 1 at 155,52 Mbit/s modulation
Spectral width 5,8 nm
– MLM laser
1,0
– SLM laser
Extinction ratio 155,52 Mbit/s square wave 10 dB
Fourth-order Thomson filter (cut-off frequency No hits No hits
a 23
Mask test of eye diagram is 0,75 × 155,52 MHz), PRBS 2 – 1 at
155,52 Mbit/s
PRBS 2 – 1 at 155,52 Mbit/s modulation,

Shutdown input voltage: low level
Shutdown test of launched
−40 dBm
power – Class B
−43
– Class C
a
Mask of the eye diagrams for downstream and upstream transmissions are specified in ITU-T Recommendation
G.983.1.
– 22 – IEC 62149-5:2020 RLV © IEC 2020
6.2.2 Characterization: receiver section
Table 10 – Receiver section characterization tests
Test limit Test limit
Parameters Test conditions Unit
minimum maximum
At minimum, 11 devices taken from an initial

manufacturing lot to be measured at case
temperatures of (–5 ± 2) °C,
(25 ± 2) °C and (75 ± 2) °C and V U at
cc cc
(V U – 5 %) V, (V U ) V and
nom nom nom nom
(V U + 5 %) V
nom nom
PRBS modulation NRZ at 155,52 Mbit/s
assuming 10dB extinction ratio source
Sensitivity at 1E-
−10
– Class B −30,0 dBm
10 BER
– Class C −33,0
PRBS modulation NRZ at 155,52 Mbit/s
assuming 10 dB extinction ratio source
−10
Overload at 1E- 10
BER – Class B −8 dBm
– Class C −11
PRBS modulation NRZ at 155,52 Mbit/s  dBm
assuming 10 dB extinction ratio source
a
Alarm on threshold
– Class B −30,0
– Class C −33,0
a
Alarm signal is effective with logic "low" specified in Table 6 and Table 7 when optical power less than that of
threshold is launched to the transceiver.

6.3 Performance testing
Performance testing is undertaken to assure reliability of products when characterization testing
is complete. The testing items, definite testing conditions and pass/fail criteria are listed in
Table 11. This testing shall be carried out on at least 11 products taken from a manufacturing
lot for each user. The testing lot shall be specified by each supplier. The products may be new
or sourced from a previous test.

Table 11 – Performance testing plan
a
Items Reference Condition Criteria Failure
Mechanical shock IEC 60068-2-27 300 m/s , 18 ms, 3 times/axis
100 m/s , 10Hz to 55 Hz, 3
Vibration IEC 60068-2-6
axes, 1,5 mm, 2 h
100 N ± 2 N at 5 N/s,
120 s duration for reinforced
cables
b
IEC 61300-2-4
Fibre pull
5 N ± 0,5 N at 0,5 N/s,
60 s duration for buffered
∆P  ≤ 1 dB
mean
fibres
∆S  ≤ 1 dB 0/11
min
–40 °C to + 85 °C
b
Temperature cycling IEC 61300-2-22 1 h duration at extremes,
at 25 °C
more than 12 cycles
+85 °C, more than 96 h
b
IEC 61300-2-18
High temperature storage
duration
–40 °C, more than 96 h
b
IEC 61300-2-17
Low temperature storage
duration
+40 °C ± 2 °C,
b
IEC 61300-2-19
Damp heat RH: 93 % ± 2 %,
96 h duration
Flammability IEC 60332-3-24
a
Pass/fail criteria are specified to be 1 dB maximum change (or less) in mean launched power and receiver
sensitivity, respectively. The quantity of 1 dB is determined to include the 0,5 dB pass/fail criteria specified in
Telcordia GR-468-CORE and a 0,5 dB margin in measurement error.
b
The testing conditions of these items may refer to Telcordia GR-468-CORE instead of IEC 61753-1 if a user
requires it.
7 Environmental specifications
7.1 General safety
All products meeting this document shall conform to IEC 60950-1.
7.2 Laser safety
Fibre optic transceivers shall be class 1 laser-certified under any condition of operation. This
includes single-fault conditions, whether coupled into a fibre or out of an open bore.
Transceivers shall be certified to be in conformance to IEC 60825-1.
Laser safety standards and regulations require that the manufacturer of a laser product provide
information about the product’s laser, safety features, labelling, use, maintenance and service.
This documentation shall explicitly define requirements and usage restrictions on the host
system necessary to meet these safety certifications.
7.3 Electromagnetic emission
Products defined in this document shall comply with IEC 61000-6-3 for the limitation of
electromagnetic interference.
– 24 – IEC 62149-5:2020 RLV © IEC 2020
Annex A
(informative)
Measurement on tolerance to the reflected optical power
(Table 3, item 13)
Tolerance to the reflected optical power is defined in ITU-T Recommendation G.983.1 as the
allowable ratio of optical input average power of O to reflected optical average power at
rd
minimum receiving sensitivity when multiple reflected light is regarded as a noise light at O .
rd
Here, O is the optical interface at the reference point between the ONU and the ODN for
rd
downstream directions. A specified value of 10 dB in Table 3, item 13, means that the BER
specification shall be satisfied, even if noise light with a power of 10 dB less than the receiver
sensitivity is put into the transceiver. In addition, the influence of reflectance into the ONU
receiver is described in Appendix II.2.2 of ITU-T Recommendation G.983.1:2005. Figure A.1
shows the model for incidence into the ONU receiver that is described in Appendix II.2.2. This
model considers that transmitted signals from the ONU no. 1 return to the ONU no. 1 receiver
as a noise through the reflection of ODN and through a WDM. Thus, the noise light is the
reflected light of burst signals transmitted from the ONU itself with wavelength between
1 260 nm and 1 360 nm that is specified in Table 3, item 3.

Key
OLT optical line termination
ONU optical network unit
RX receiver
TX transmitter
WDM wavelength division multiplexer
Figure A.1 – Model for incidence into ONU receiver
According to the model described above, burst signals with 1 300-nm band wavelength shall be
used as a noise by an example measuring system show
...

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
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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

– 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

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

– 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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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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
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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.

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.
– 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.

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

– 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.

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.
– 10 – IEC 62149-5:2020 © IEC 2020
• 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 connected to the power supplies;
• input and output terminals, i.e., terminals into or out of which signals are passed.
The term "signal" includes both pulse and more complex waveforms and includes strobe or
control pulses.
Figure 1 – Functional block diagram (example)
5.4 Absolute limiting rating
Absolute limiting (maximum) ratings imply that no catastrophic damage will occur if the product
is subjected to these ratings, provided each limiting parameter is in isolation and all other
parameters have values within the normal performance parameters. It should not be assumed
that limiting values of more than one parameter could be applied at any one time.

Table 1 – Absolute maximum ratings
Letter
Items Condition Requirements Units
symbol
Minimum Maximum
a
T
Storage temperature –40 85
stg °C
H
Storage relative humidity 5 95 %
stg
Bend radius of pigtail for transceivers (at
r 30 mm
b
specified distance from the case)
Pulse duration: 18
c 2
Shock 300 m/s
ms 3 times/axis
10 Hz to 55 Hz,
d 2
Vibration 3 axes, 1,5 mm,  100 m/s
2 h
Tensile force on devices with pigtail
e
Buffer-coated fibre 5
F N
e
Reinforced fibre
Electrical limiting values
U
– Power supply voltage −0,5 4,0 V
SUPmax
U U
– Input voltage −0,5 V
INmax sup
U U + 0,5
– Output voltage 0 V
OUTmax sup
– Output current
I
PECL interface 0 50 mA
OUTmax
LVTTL interface −20 20
Optical limiting values
P
– Permissible input power −5 dBm
in
a
Ambient temperature and humidity for outdoor ONU is under further study in
ITU-T Recommendation G.983.1, thus these specifications may be varied in the future.
b
IEC 62148-1 shall be referred to for detail.
c
IEC 60068-2-27 shall be referred to for detail.
d
IEC 60068-2-6 shall be referred to for detail.
e
The requirements of IEC 61753-1 shall be applied.

5.5 Functional specification
Electro-optical characteristics for the items in Table 3 shall be satisfied at the operating
environmental conditions specified in Table 2. Optical characteristics specified in
ITU-T Recommendation G.983.1 should be satisfied.
Each electrical and optical characteristic of 5.5 shall be measured under conditions specified
in each reference.
Each electrical and optical characteristic of 5.5 shall be stated under specified worst-case
conditions, with respect to the recommended range of operating conditions as stated. The
measuring method of each electrical and optical characteristics specified in Table 3 shall be
measured based on the method stated in the reference of each row.

– 12 – IEC 62149-5:2020 © IEC 2020
Table 2 – Operating environment
Letter
Items Requirements Units
symbol
Minimum Typical Maximum
U
Power supply voltage 3,135 3,3 3,465 V
SUP
a
T –5 75
Operating case temperature
case °C
a
RH 5 95 %
Ambient relative humidity
a
Operating case temperature and humidity for outdoor ONU is under further study in
ITU-T Recommendation G.983.1, thus these specifications may be varied in the future.

Table 3 – Electrical and optical characteristics
Requirements
Item number Items Letter symbol Units Reference
Minimum Typical Maximum
1 Nominal bit rate B 155,52 Mb/s
a
Mean launched power
P
2 –4 +2 dBm IEC 61280-1-1
– Class B
mean
– Class C –2 +4
3 Transmitter wavelength λ 1 260 1 360 nm IEC 61280-1-3
b
4 Mask of transmitter eye diagram –
r
5 Extinction ratio 10  dB IEC 61280-2-2
Ex
6 For MLM laser, maximum RMS width ∆λ  5,8 nm IEC 61280-1-3
7 For SLM laser, maximum –20 dB width ∆λ  1,0 nm IEC 61280-1-3
r
8 For SLM laser, minimum side mode suppression ratio 30  dB IEC 61280-1-3
SMSR
R
9 Maximum reflectance measured at transmitter wavelength –6  dB IEC 61300-3-6
TX
Receiver overload:
S
10 – Class B –8  dBm IEC 62150-2
O
– Class C –11
Receiver sensitivity:
11 – Class B S  –30 dBm IEC 62150-2
– Class C –33
R
12 Maximum reflectance measured at receiver wavelength –20  dB IEC 61300-3-6
RX
ITU-T G.957:2006,
c
13  10 dB
Tolerance to the reflected optical power
Appendix III
14 Clock input voltage (high) See Table 4 and Table 5
15 Clock input voltage (low) See Table 4 and Table 5
16 Clock input voltage (swing centre) See Table 4 and Table 5
17 Data input voltage (high) See Table 4 and Table 5
18 Data input voltage (low) See Table 4 and Table 5
19 Data input voltage (swing centre) See Table 4 and Table 5
20 Clock output voltage (high) See Table 4 and Table 5
21 Clock output voltage (low) See Table 4 and Table 5

– 14 – IEC 62149-5:2020 © IEC 20200

Requirements
Item number Items Letter symbol Units Reference
Minimum Typical Maximum
22 Data output voltage (high) See Table 4 and Table 5
23 Data output voltage (low) See Table 4 and Table 5
d
24 See Table 6 and Table 7 IEC 62150-2
Alarm output voltage (high)
d
25 See Table 6 and Table 7 IEC 62150-2
Alarm output voltage (low)
e
26 See Table 8 IEC 62150-2
Shutdown input voltage (high)
e
27 See Table 8 IEC 62150-2
Shutdown input voltage (low)
f
U
28 Bias control voltage (high)
BiasH
f
U
29 Bias control voltage (low)
BiasL
30 Line code Scrambled NRZ
g
Launched optical power without input to transmitter
31 −40  dBm IEC 61280-1-1
– Class B
−43
– Class C
g
32 −15  dB
Tolerance to the transmitter incident light power
b
Consecutive identical digit immunity
b
34 Jitter generation
b
35 Jitter tolerance
b
Jitter transfer
a
Pseudo random data shall be put into the transmitter according to the specification of 8.2.6.3 of ITU-T Recommendation G.983.1:2005.
b
These items shall be specified so as to meet the specifications of ITU-T Recommendation G. 983.1.
c
This item shall be measured based on the measuring method described in the reference. See Annex A for more detail.
d
With logic ‘low’, an alarm signal is effective. The alarm test shall be done whether logic ‘low’ is put out when no optical power is launched to the transceiver, and logic ‘high’ is
put out when optical power more than that specified in item 11 is launched to the transceiver (see Annex B).
e
With logic ‘low’, a shutdown signal is effective. The shutdown test shall be done whether optical power less than that specified in item 31 is launched when logic ‘low’ is put into
the ‘shutdown’ terminal, and optical power within the range specified in item 2 is launched when logic ‘high’ is put into the ‘shutdown’ terminal (see Annex B).
f
These items shall be specified between vendors and users.
g
Measurement methods on these items are stated in 5.5.

The clock and data input/output interface shall be satisfied with either the specification listed in
Table 4 or Table 5. The interface specifications characterized by each table are normally
referred to as PECL and LVTTL interfaces, respectively. New interface dimensions will be added
properly.
Table 4 – Electrical interface characteristics (PECL type)
Requirements
Items Letter symbol Units
Minimum Typical Maximum
U −
CINH
Clock input voltage (high) −1,17 −0,88 V
U
SUP
U − −1,43
CINL
Clock input voltage (low) −1,81 V
U
SUP
U −
DINH
Data input voltage (high) −1,17 −0,88 V
U
SUP
U −
DINL
Data input voltage (low) −1,81 −1,43 V
U
sup
U −
COUTH
a
−0,96 V
Clock output voltage (high)
U
SUP
U −
COUTL
a
−1,71 V
Clock output voltage (low)
U
SUP
U −
DOUTH
a
−0,96 V
Data output voltage (high)
U
SUP
U −
DOUTL
a
−1,71 V
Data output voltage (low)
U
SUP
a
Outputs terminated to U – 2 V.
SUP
Table 5 – Electrical interface characteristics (LVTTL type)
Letter
Items Requirements Units
symbol
Minimum Typical Maximum
U U
U + 0,3
Clock input voltage (high) V
CINH SUP
CINL
U −
CINH
U
Clock input voltage (low) 0 V
CINL
0,3
U / U /
SUP SUP
U
Clock input voltage (swing centre) V
Ccenter
2 − 0,1 2 + 0,1
U U + 0,3 U
Data input voltage (high) V
DINH DINL SUP
U +
DINH
U
Data input voltage (low) 0 V
DINL
0,3
U / U /
SUP SUP
U
Data input voltage (swing centre) V
Dcenter
2 − 0,1 2 + 0,1
a
U U + 0,4
V
Clock output voltage (high)
COUTH TT
a
U U − 0,4
Clock output voltage (low) V
COUTL TT
a
U
U + 0,4
Data output voltage (high) V
DOUTH
TT
a
U U – 0,4
V
Data output voltage (low)
DOUTL TT
a
U = 1,5 V to 1,8 V
TT
– 16 – IEC 62149-5:2020 © IEC 2020

The alarm output interface shall be satisfied with either the specification listed in Table 6 or
Table 7. The interface specifications characterized by each table are normally referred to as
PECL and LVTTL interfaces, respectively. New interface dimensions will be added properly.
Table 6 – Electrical interface characteristics of alarm output voltage (PECL type)
Requirements
Letter
Items Units
symbol
Minimum Typical Maximum
a
U 2,4  V
Alarm output voltage (high)
ALH
a
U
0,4 V
Alarm output voltage (low)
ALL
a
Test shall be performed with current at high level, I = –2 mA, and current at low level, I = 2 mA, at V
ALH ALL SUP
between 3,135 V and 3,465 V.
Table 7 – Electrical interface characteristics of alarm output voltage (LVTTL type)
Requirements
Letter
Items Units
symbol
Minimum Typical Maximum
a
U U − 0,2
V
Alarm output voltage (high)
ALH SUP
a
U
0,2 V
Alarm output voltage (low)
ALL
a
Test shall be performed with current at high level, I = –100 µA, and current at low level, I = 100 µA, at
ALH ALL
U between 3,135 V and 3,465 V.
SUP
Shutdown input interface shall be satisfied with specifications listed in Table 8. New interface
dimensions will be added properly.
Table 8 – Electrical interface characteristics of shutdown input voltage
(both PECL and LVTTL types)
Requirements
Letter
Items Units
symbol
Minimum Typical Maximum
a
U U + 0,3
Shutdown input voltage (high) 2,0 V
SDH SUP
a
U
–0,3 0,8 V
Shutdown input voltage (low)
SDL
a
Test shall be performed with U between 3,135 V and 3,465 V.
SUP
NOTE The interfaces listed in Table 6, Table 7 and Table 8 refer to EIA/JEDEC JESD8-B, with the exception of
power supply voltage U , which is specified in Table 2.
SUP
Relationship of the phase between clock and data signals is shown in Figure 2. Phase of data
signals are timed so that data signals are latched at a fall time of clock.

Figure 2 – Relationship of phase between clock and data signals
Examples of recommended electrical circuit diagrams for LVTTL-type interface are shown in
Figure 3 a) and b).
a) With standard termination
b) With Thevenin termination
Figure 3 – Recommended electrical circuit diagram for LVTTL-type interface (examples)
Launched optical power without input to transmitter (Table 3, item 31) is schematically defined
in Figure 4. The measuring method of the power shall basically follow IEC 61280-1-1, but it
shall be specified in detail between vendors and users.

– 18 – IEC 62149-5:2020 © IEC 2020

Figure 4 – Schematic drawing for defining launched optical power
without input to transmitter
Tolerance to the transmitter incident light power (Table 3, item 32) is measured, for example,
by an experimental setup shown in Figure 5. The value of reflection at the reflector is set so
that incident light power back to the transmitter is 15 dB less than that of mean transmitter
launching power. Pass/fail criteria depend on whether or not the waveform of signals
transmitted from the DUT and monitored at the waveform monitor satisfies the eye mask
specified in Table 3, item 4.
Figure 5 – Experimental setup for measuring tolerance
to the transmitter incident light power
6 Testing
6.1 General
Initial characterization and qualification shall be undertaken. Qualification maintenance is
carried out using periodic testing programs. Test case temperature conditions for all tests,
unless otherwise stated, are 25 °C ± 2 °C.
6.2 Characterization testing
Characterization testing including both transmitter and receiver sections shall be carried out
based on the specifications listed in Table 9 for the transmitter section and Table 10 for the
receiver section. This testing shall be carried out on at least 11 products taken from a
manufacturing lot for each user. The testing lot shall be specified by each supplier. If any
changes occur in the design of the transceiver, the testing shall be carried out again.

6.2.1 Characterization: transmitter section
Table 9 – Transmitter section characterization tests
Test limit Test limit
Parameters Test conditions Unit
minimum maximum
As a minimum, 11 devices taken from a

manufacturing lot for each user to be
measured at case temperatures of

(−5 ± 2) °C, (25 ± 2) °C and (75 ± 2) °C and
U at (U − 5 %) V, (U ) V and (U +
cc nom nom nom
5 %) V
Single-mode fibre, PRBS 2 – 1 at

155,52 Mbit/s modulation
Mean launched power
−4,0 +2,0 dBm
– Class B
−2,0 +4,0
– Class C
Central wavelength
1 260 1 360 nm
PRBS 2 – 1 at 155,52 Mbit/s modulation

PRBS 2 – 1 at 155,52 Mbit/s modulation
5,8 nm
Spectral width – MLM laser
1,0
– SLM laser
Extinction ratio 155,52 Mbit/s square wave 10 dB
Fourth-order Thomson filter (cut-off frequency No hits No hits
a 23
Mask test of eye diagram is 0,75 × 155,52 MHz), PRBS 2 – 1 at
155,52 Mbit/s
PRBS 2 – 1 at 155,52 Mbit/s modulation,

Shutdown input voltage: low level
Shutdown test of launched
power −40 dBm
– Class B
−43
– Class C
a
Mask of the eye diagrams for downstream and upstream transmissions are specified in ITU-T Recommendation
G.983.1.
– 20 – IEC 62149-5:2020 © IEC 2020
6.2.2 Characterization: receiver section
Table 10 – Receiver section characterization tests
Test limit Test limit
Parameters Test conditions Unit
minimum maximum
At minimum, 11 devices taken from an initial
manufacturing lot to be measured at case
temperatures of (–5 ± 2) °C,
(25 ± 2) °C and (75 ± 2) °C and U at
cc
(U – 5 %) V, (U ) V and
nom nom
(U + 5 %) V
nom
PRBS modulation NRZ at 155,52 Mbit/s
assuming 10dB extinction ratio source
−10
Sensitivity at 10
– Class B −30,0 dBm
BER
– Class C −33,0
PRBS modulation NRZ at 155,52 Mbit/s
assuming 10 dB extinction ratio source
−10
Overload at 10 BER
– Class B −8 dBm
– Class C −11
PRBS modulation NRZ at 155,52 Mbit/s  dBm
assuming 10 dB extinction ratio source
a
Alarm on threshold
– Class B −30,0
– Class C −33,0
a
Alarm signal is effective with logic "low" specified in Table 6 and Table 7 when optical power less than that of
threshold is launched to the transceiver.

6.3 Performance testing
Performance testing is undertaken to assure reliability of products when characterization testing
is complete. The testing items, definite testing conditions and pass/fail criteria are listed in
Table 11. This testing shall be carried out on at least 11 products taken from a manufacturing
lot for each user. The testing lot shall be specified by each supplier. The products may be new
or sourced from a previous test.

Table 11 – Performance testing plan
a
Items Reference Condition Criteria Failure
Mechanical shock IEC 60068-2-27 300 m/s , 18 ms, 3 times/axis
100 m/s , 10Hz to 55 Hz, 3
Vibration IEC 60068-2-6
axes, 1,5 mm, 2 h
100 N ± 2 N at 5 N/s,
120 s duration for reinforced
cables
b
IEC 61300-2-4
Fibre pull
5 N ± 0,5 N at 0,5 N/s,
60 s duration for buffered
∆P  ≤ 1 dB
mean
fibres
∆S  ≤ 1 dB 0/11
min
–40 °C to + 85 °C
b
Temperature cycling IEC 61300-2-22 1 h duration at extremes,
at 25 °C
more than 12 cycles
+85 °C, more than 96 h
b
IEC 61300-2-18
High temperature storage
duration
–40 °C, more than 96 h
b
IEC 61300-2-17
Low temperature storage
duration
+40 °C ± 2 °C,
b
IEC 61300-2-19
Damp heat RH: 93 % ± 2 %,
96 h duration
Flammability IEC 60332-3-24
a
Pass/fail criteria are specified to be 1 dB maximum change (or less) in mean launched power and receiver
sensitivity, respectively. The quantity of 1 dB is determined to include the 0,5 dB pass/fail criteria specified in
Telcordia GR-468-CORE and a 0,5 dB margin in measurement error.
b
The testing conditions of these items may refer to Telcordia GR-468-CORE instead of IEC 61753-1 if a user
requires it.
7 Environmental specifications
7.1 General safety
All products meeting this document shall conform to IEC 60950-1.
7.2 Laser safety
Fibre optic transceivers shall be class 1 laser-certified under any condition of operation. This
includes single-fault conditions, whether coupled into a fibre or out of an open bore.
Transceivers shall be certified to be in conformance to IEC 60825-1.
Laser safety standards and regulations require that the manufacturer of a laser product provide
information about the product’s laser, safety features, labelling, use, maintenance and service.
This documentation shall explicitly define requirements and usage restrictions on the host
system necessary to meet these safety certifications.
7.3 Electromagnetic emission
Products defined in this document shall comply with IEC 61000-6-3 for the limitation of
electromagnetic interference.
– 22 – IEC 62149-5:2020 © IEC 2020
Annex A
(informative)
Measurement on tolerance to the reflected optical power
(Table 3, item 13)
Tolerance to the reflected optical power is defined in ITU-T Recommendation G.983.1 as the
allowable ratio of optical input average power of O to reflected optical average power at
rd
minimum receiving sensitivity when multiple reflected light is regarded as a noise light at O .
rd
Here, O is the optical interface at the reference point between the ONU and the ODN for
rd
downstream directions. A specified value of 10 dB in Table 3, item 13, means that the BER
specification shall be satisfied, even if noise light with a power of 10 dB less than the receiver
sensitivity is put into the transceiver. In addition, the influence of reflectance into the ONU
receiver is described in Appendix II.2.2 of ITU-T Recommendation G.983.1:2005. Figure A.1
shows the model for incidence into the ONU receiver that is described in Appendix II.2.2. This
model considers that transmitted signals from the ONU no. 1 return to the ONU no. 1 receiver
as a noise through the reflection of ODN and through a WDM. Thus, the noise light is the
reflected light of burst signals transmitted from the ONU itself with wavelength between
1 260 nm and 1 360 nm that is specified in Table 3, item 3.

Key
OLT optical line termination
ONU optical netw
...