IEC 62149-3:2023

IEC 62149-3
®

Edition 4.0 2023-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Fibre optic active components and devices – Performance standards –
Part 3: Modulator-integrated laser diode transmitters for 40-Gbit/s fibre optic
transmission systems

Composants et dispositifs actifs fibroniques – Normes de performances –
Partie 3: Émetteurs à diodes laser à modulateur intégré pour systèmes de
transmission fibroniques 40 Gbit/s
IEC 62149-3:2023-07(en-fr)

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IEC 62149-3

®


Edition 4.0 2023-07




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Fibre optic active components and devices – Performance standards –

Part 3: Modulator-integrated laser diode transmitters for 40-Gbit/s fibre optic

transmission systems



Composants et dispositifs actifs fibroniques – Normes de performances –

Partie 3: Émetteurs à diodes laser à modulateur intégré pour systèmes de


transmission fibroniques 40 Gbit/s












INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE





ICS 33.180.20  ISBN 978-2-8322-7189-6




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – IEC 62149-3:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 7
4 Product parameters . 7
4.1 Absolute limiting ratings . 7
4.2 Operating environment . 8
4.3 Functional specification. 8
4.4 Diagrams . 10
5 Testing . 10
5.1 General . 10
5.2 Characterization testing . 10
5.3 Performance testing . 12
6 Environmental specifications . 14
6.1 General safety . 14
6.2 Laser safety . 14
Bibliography . 15

Figure 1 – Schematic diagram of a modulator-integrated laser diode transmitter . 10

Table 1 – Absolute limiting ratings . 8
Table 2 – Operating environment . 8
Table 3 – Operating conditions for functional specification . 8
Table 4 – Functional specification . 9
Table 5 – Characterization tests . 11
Table 6 – Performance test plan . 12
Table 7 – Recommended performance test failure criteria . 13

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IEC 62149-3:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PERFORMANCE STANDARDS –

Part 3: Modulator-integrated laser diode transmitters
for 40-Gbit/s fibre optic transmission systems

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,
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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
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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
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
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the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 62149-3 has been prepared by subcommittee 86C: Fibre optic systems and active devices,
of IEC technical committee 86: Fibre optics. It is an International Standard.
This fourth edition cancels and replaces the third edition published in 2020. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) specification of pull force for fibre pull test in Table 6 according to fibre type;
b) change of symbol for kink free radiant power in Table 4 and Table 5;
c) replacement of undefined symbols in Table 7;
d) addition of IEC 62149-1 as a normative reference.

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– 4 – IEC 62149-3:2023 © IEC 2023
The text of this International Standard is based on the following documents:
Draft Report on voting
86C/1839/CDV 86C/1864/RVC

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the 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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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IEC 62149-3:2023 © IEC 2023 – 5 –
INTRODUCTION
Fibre optic transmitters are used to convert electrical signals into optical signals. This document
covers the performance standard for optical modulators monolithically integrated with laser
diodes for 40 Gbit/s optical telecommunication systems. This document is applicable for on-off
keying formats.

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– 6 – IEC 62149-3:2023 © IEC 2023
FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES –
PERFORMANCE STANDARDS –

Part 3: Modulator-integrated laser diode transmitters
for 40-Gbit/s fibre optic transmission systems



1 Scope
This part of IEC 62149 covers the performance specification for electroabsorption (EA) type
optical modulators monolithically integrated with laser diodes for 40 Gbit/s fibre optic
transmission systems. This document contains definitions for product performance
requirements as well as a series of tests and measurements, for which clearly defined
conditions, severities and pass/fail criteria are provided. The tests are intended to be run as an
initial design verification to prove any product's ability to satisfy this document's requirements.
This document is applicable for on-off keying modulation formats.
A product that has been shown to meet all the requirements of a performance standard can be
declared as compliant with the performance standard but will then be controlled by a quality
assurance program.
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 60068-2-1, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2, Environmental testing – Part 2-2: Tests – Test B: Dry heat
IEC 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-14, Environmental testing – Part 2-14: Tests – Test N: Change of temperature
IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state
IEC 60749-7, Semiconductor devices – Mechanical and climatic test methods – Part 7: Internal
moisture content measurement and the analysis of other residual gases
IEC 60749-26, Semiconductor devices – Mechanical and climatic test methods – Part 26:
Electrostatic discharge (ESD) sensitivity testing – Human body model (HBM)
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 61300-2-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-4: Tests – Fibre or cable retention

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IEC 62149-3:2023 © IEC 2023 – 7 –
IEC 62007-1, Semiconductor optoelectronic devices for fibre optic system applications – Part 1:
Specification template for essential ratings and characteristics
IEC 62149-1, Fibre optic active components and devices – Performance standards – Part 1:
General and guidance
IEC 62572-3, Fibre optic active components and devices – Reliability standards – Part 3: Laser
modules used for telecommunication
ITU-T Recommendation G.694.1, Spectral grids for WDM applications: DWDM frequency grid
ITU-T Recommendation G.957, Optical interfaces for equipments and systems relating to the
synchronous digital hierarchy
MIL-STD-883-1, U.S. Department of Defense – Test method standard – Environmental test
methods for microcircuits, Part 1: Test methods 1000-1999
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62007-1 and
IEC 62149-1 apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.2 Abbreviated terms
EA electroabsorption
LD laser diode
LSL lower standard limit
PD photodiode
PRBS pseudo-random bit sequence
RF radio frequency
RH relative humidity
USL upper standard limit
4 Product parameters
4.1 Absolute limiting ratings
Absolute limiting (maximum and/or minimum) ratings given in Table 1 imply that no catastrophic
damage will occur if the product is subject 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 can be applied at any
one time.

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– 8 – IEC 62149-3:2023 © IEC 2023
Table 1 – Absolute limiting ratings
Parameter Symbol Minimum Maximum Unit
Operating case temperature T 0 +70 °C
case
(at the bottom of the case)
Storage temperature T −40 +85 °C
stg
Soldering temperature T − +260 °C
sld
(minimum distance to case specified)
(for 10 s)
Laser diode
Reverse voltage V − 2 V
R(LD)
Continuous forward current I − 200 mA
F(LD)
Continuous radiant power − 10 mW
φ
e
Photodiode
V
Reverse voltage − 10 V
R(PD)
Forward current I − 1 mA
F(PD)
Modulator
Reverse modulation voltage V − 5 V
Rm
Forward modulation voltage V − 1 V
Fm
Thermal electric cooler
Cooler current under cooling and heating I − 1,5 A
P
Cooler voltage under cooling and heating V − 2,5 V
P

4.2 Operating environment
The operating environment is indicated in Table 2.
Table 2 – Operating environment
Value
Parameter Symbol Unit
Minimum Maximum
Operating case temperature T 0 +70 °C
case

4.3 Functional specification
Functional specification shall be within the limit specified in Table 4 at the operating conditions
specified in Table 3.
Table 3 – Operating conditions for functional specification
Value
Parameter Symbol Unit
Minimum Maximum
Laser operating current I 50 200 mA
op
Laser operating temperature T 15 35 °C
op
Reverse modulation centre voltage V 0,5 1,5 V
Rmc
Peak to peak modulation voltage V 2 3 V
Rmpp
NOTE Operating conditions are adjusted to match ITU-T Recommendation G.694.1 wavelength within the above
specified limit.

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IEC 62149-3:2023 © IEC 2023 – 9 –
Table 4 – Functional specification
Characteristics and conditions at T = T , I = I Value
LD op F(LD) op
Symbol Unit
V = 0 V, unless otherwise stated Minimum Maximum
Rm
Laser and modulator diode
a
Modulation speed X − Gbit/s
43,02
Forward voltage at specified φ or I V − 2,2 V
e op F(LD)
Threshold current I − 50 mA
(TH)
Radiant power at specified I φ 0,5 − mW
op e
Kink free radiant power φ 0,6 − mW
ek
r
Extinction ratio at specified φ or I 8,2 − dB
ER
e op

b
(under modulated conditions)
Peak emission wavelength at specified φ or I λ nm
e op P
c c

b, c

(under modulated conditions)
r 30 − dB
Side-mode suppression ratio at specified φ or I
SMSR
e op

b
(under modulated conditions)
b
t
Switching times at specified φ or I − 600/X ps
Rise time
r
e op

(under modulated conditions)
b
t − 600/X ps
Fall time
f
d
S 6,0 − dB
RF return loss at specified φ or I
11
e op
P − 2 dB
Transmission penalty due to dispersion at specified φ or
e
e
b
I , under modulated conditions and specified fibre length
op
Monitor photodiode
Dark current at φ = 0 and specified V I − 10 nA
e R(PD) DARK
I
Monitor current at specified φ or I and V 50 2 000 µA
M
e op R(PD)
Tracking error between operating temperature range with
reference at 25 °C at specified φ or I and V E
–0,5 0,5 dB
e op R(PD) tr
specified
Thermal sensor
Resistance at specified sensor current R 9,5 10,5 kΩ
s
e
B 3 300 3 950 K
Thermistor B constant
Thermal electric cooler
Cooler current at ΔT = T – T and I − 1,5 A
case(max) LD p
ΔT = T – T at specified φ or I
LD case(min) e op
Cooler voltage at ΔT = T – T and V − 2,5 V
case(max) LD p
ΔT = T – T at specified φ or I
LD case(min) e op
a
Upper limit in this document. Actual maximum modulation speed shall be designated by a system

requirement.
b
23
 Definition and condition according to ITU-T Recommendation G.957, PRBS 2 – 1 , V = V ± 1/2 V .
Rm Rmc Rmpp
c
 According to ITU-T Recommendation G.694.1.
d
V = 1/2V , 50 Ω termination, measurement frequency should be specified by system requirement.
Rm Rmpp
e
 B = ln(R/R )/(1/T – 1/T ) where R is the resistance at ambient temperature T (K) and R is the resistance at
0 0 0
ambient temperature T (K).
0

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– 10 – IEC 62149-3:2023 © IEC 2023
4.4 Diagrams
Figure 1 provides a representative schematic diagram of a modulator-integrated laser diode
transmitter.

Figure 1 – Schematic diagram of a modulator-integrated laser diode transmitter
5 Testing
5.1 General
Initial characterization and qualification shall be undertaken when a build standard has been
completed and frozen. Qualification maintenance is carried out using periodic testing programs.
Case temperature conditions for all tests are 25 °C ± 2 °C unless otherwise stated.
5.2 Characterization testing
Characterization shall be carried out on at least 20 transmitters, taken from at least three
different manufacturing lots. The test conditions are detailed in Table 5.

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IEC 62149-3:2023 © IEC 2023 – 11 –
Table 5 – Characterization tests
Characteristics and conditions at T = T , I = I Value
LD op F(LD) op
Symbol Unit
V = 0 V, unless otherwise stated Minimum Maximum
Rm
Laser and modulator diode
a
Modulation speed −
X 43,02 Gbit/s
Forward voltage at specified φ or I V −
2,2 V
e op F(LD)
Threshold current I −
50 mA
(TH)
Radiant power at specified I φ −
0,5 mW
op e
Kink free radiant power φ −
0,6 mW
ek
Extinction ratio at specified φ or I −
e op
r
8,2 dB
ER
b
(under modulated conditions)
Peak emission wavelength at specified φ or I
e op
λ c c
nm
P
b, c
(under modulated conditions)
Side-mode suppression ratio at specified φ or I
e op
r
30 − dB
SMSR
b
(under modulated conditions)
b
Switching times at specified φ or I t −
Rise time 600/X ps
e op r
(under modulated conditions)
b
t −
Fall time 600/X ps
f
d
RF return loss at specified φ or I S
6,0 − dB
e op 11
Transmission penalty due to dispersion at specified φ or I ,
e op
P
− 2 dB
e
b
under modulated condition and specified fibre length
Monitor photodiode
I
Dark current at φ = 0 and specified V
− 10 nA
DARK
e R(PD)
Monitor current at specified φ or I and V I
50 2 000 µA
e op R(PD) M
Tracking error between operating temperature range with
E
−0,5 0,5 dB
tr
φ or I and V specified
reference at 25 °C at specified
e op R(PD)
Thermal sensor
Resistance at specified sensor current R
9,5 10,5 kΩ
s
e
B 3 300 3 950 K
Thermistor B constant
Thermal electric cooler
Cooler current at ΔT = T – T and
case(max) LD
I
− 1,5 A
p
ΔT = T – T at specified φ or I
LD case(min) e op
Cooler voltage at ΔT = T – T and
case(max) LD
V
− 2,5 V
p
ΔT = T – T at specified φ or I
LD case(min) e op
a
Upper limit in this document. Actual maximum modulation speed shall be designated by a system
requirement.
b
23
Definition and conditions according to ITU-T Recommendation G.957, PRBS 2 – 1 , V = V ± ½ V .
Rm Rmc Rmpp
c
According to ITU-T Recommendation G.694.1.
d
V = 1/2V , 50 Ω termination, measurement frequency should be specified by system requirement.
Rm Rmpp
e
B = ln(R/R )/(1/T-1/T ) where R is the resistance at ambient temperature T (K) and R is the resistance at
0 0 0
(K).
ambient temperature T
0

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– 12 – IEC 62149-3:2023 © IEC 2023
5.3 Performance testing
Performance testing is undertaken when characterization testing is complete. See Table 6 for
the performance test plan and Table 7 for recommended performance test failure criteria.
Table 6 – Performance test plan
Test Reference Conditions Sample size
Endurance High Temperature: T = T max.
IEC 60068-2-2 11
stg
tests of temperature
b
Duration: > 2 000 h
module storage
Low temperature Temperature: T = T min.
IEC 60068-2-1 11
stg
storage
b
Duration: > 2 000 h
Temperature Test Na
IEC 60068-2-14 11
cycling
Temperature:
T = T min.
A stg
T = T max.
B stg
Number of cycles = 100
d
duration of exposure
Damp heat T = 40 °C, RH = 95 %, 56 days
IEC 60068-2-78 11
Cyclic moisture
MIL-STD-883-1 11
resistance
Method 1004.7
Endurance test of laser diode Temperature: at least two test
IEC 62572-3
on submount temperatures:
φ specified, constant power
e
c
T = T max.
By agreement
sub1 sub
c
T ≤ (T – 20) °C or
By agreement
sub2 sub1
T ≤ (T – 10) °C if
sub2 sub1
applicable
b
Duration: > 5 000 h
Endurance test of photodiode Temperature: at least two test
IEC 62572-3
in representative package temperatures:
V or I specified
R R
a c

T = 125 °C min. By agreement
sub1
c
T ≤ (T – 30 °C)
By agreement
sub2 sub1
Duration: > 1 000 h
Power cycle tests of the Number of cycles: 20 000
11
thermoelectric cooler
T = T
case op max
T = T to (T – ΔT )
sub case case max
High temperature storage of
MIL-STD-883-1
T = T of the sensor
25
stg max
the thermal sensor
Method 1008.2
e
Fibre pull
IEC 61300-2-4 11
5 s, 3 times, pull force :
10 N for fibre cables
5,0 N for buffered fibres
2,0 N for primary coated fibres
2
Mechanical shock
IEC 60068-2-27 5 000 m/s , 1,0 ms 11
5 times/axis
2
Vibration
IEC 60068-2-6 200 m/s , 20 Hz to 2 000 Hz, 11
4 min/cycle, 4 cycles/axis
Thermal shock ΔT = 100 °C
IEC 60068-2-14 11

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IEC 62149-3:2023 © IEC 2023 – 13 –
Test Reference Conditions Sample size
...