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Advance Data Sheet
February 2000
D572-Type 1.5
m Uncooled DFB
FastLight
TM
Laser Module
for 2.5 Gbits/s and High Bandwidth Applications
The low-profile D572-Type Laser Module is ideally suited for
OC-48 SONET and other high-speed digital applications.
Features
s
8-pin package suitable for SONET applications
s
Narrow linewidth, distributed feedback, multiquan-
tum-well (DFB-MQW)1510 nm or 1550 nm laser
with single-mode fiber pigtail
s
Operating temperature range: 25
C to +70
C
(25
C to +85
C versions under development)
s
No TEC required
s
High output power: typical 2.0 mW peak power
coupled into single-mode fiber
s
Hermetically sealed active components
s
Internal back-facet monitor
s
Built-in thermistor and Bias T
s
25
input impedance
s
Internal isolator
s
Telcordia Technologies
* TA-983 qualification pro-
gram
s
Bandwidth > 3 GHz
Applications
s
SONET OC-48/STM-16 systems
s
Telecommunications
s
Secure digital data systems
Benefits
s
Easily board mounted
s
Gull-wing leads
s
No additional heat sinks required
s
Low-cost alternative to industry-standard, 14-pin
isolated laser module (ILM)
s
Highly efficient DFB-MQW laser structure allows
for lower threshold and drive currents, and reduced
power consumption
Description
The D572-Type Uncooled Laser Module consists of a
laser diode coupled to a single-mode fiber pigtail.
The device is available in a standard, 8-pin configu-
ration (see Figure 1 and/or Table 1) and is ideal for
long-reach (SONET) and other high-speed digital
applications.
The module includes a narrow linewidth (<1 nm)
DFB-MQW single-mode laser and an InGaAs PIN
photodiode back-facet monitor in a hermetically
sealed package.
This package is optimized for a 25
input imped-
ance and allows for dc biasing through an internal
bias tee. A thermistor has been included for feedback
to board-level bias circuitry, if needed.
*
Telcordia Technologies
is a trademark of Bell Communications
Research, Inc.
D572-Type 1.5
m Uncooled DFB
FastLight
Laser Module
Advance Data Sheet
for 2.5 Gbits/s and High-Bandwidth Applications
February 2000
2
2
Lucent Technologies Inc.
Description
(continued)
The device characteristics listed in this document are
met at 2.0 mW output power. Higher- or lower-power
operation is possible. Under conditions of a fixed
photodiode current, the change in optical output is typi-
cally
0.5 dB over an operating temperature range of
25
C to +70
C.
This device incorporates the new Laser 2000 manufac-
turing process from the Optoelectronic Products unit of
Lucent Technologies Microelectronics Group. Laser
2000 is a low-cost platform that targets high-volume
manufacturing and tighter product distributions on all
optical subassemblies. This platform incorporates an
advanced optical design that is produced on one of the
highly automated production lines at the Opotelectronic
manufacturing facility. The Laser 2000 platform is quali-
fied for the central office and uncontrolled environ-
ments, and can be used for applications requiring high
performance and low cost.
Table 1. Pin Descriptions
Pin Number
Connection
1
Thermistor
2
Thermistor, package GND
3
Laser dc bias cathode () choke
4
Photodiode cathode
5
Photodiode anode
6
Laser diode anode (+)
7
Laser RF input cathode () 25
8
Laser diode anode (+)
Figure 1. D572-Type Uncooled DFB Mini 8-Pin Laser Module Schematic, Top View
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
* Rating varies with temperature.
Parameter
Symbol
Min
Max
Unit
Maximum Peak Laser Drive Current or
Maximum Fiber Power*
I
OP
P
MAX
--
--
150
10
mA
mW
Peak Reverse Laser Voltage:
Laser
Monitor
V
RL
V
RM
--
--
2
20
V
V
Monitor Forward Current
I
FD
--
2
mA
Operating Case Temperature Range
T
C
40
85
C
Storage Case Temperature Range
T
stg
40
85
C
Lead Soldering Temperature/Time
--
--
260/10
C/s
Relative Humidity (noncondensing)
RH
--
85
%
1-900.b
5
6
8
7
4
3
1
2
Advance Data Sheet
D572-Type 1.5
m Uncooled DFB
FastLight
Laser Module
February 2000
for 2.5 Gbits/s and High-Bandwidth Applications
3
Lucent Technologies Inc.
Handling Precautions
CAUTION: This device is susceptible to damage as a result of electrostatic discharge (ESD). Take proper
precautions during both handling and testing. Follow
EIA
* Standard
EIA
-625.
Although protection circuitry is designed into the device, take proper precautions to avoid exposure to ESD.
*
EIA
is a registered trademark of Electronic Industries Association.
Electro-Optical Characteristics
1. BOL value; EOL = 80 mA.
2. The slope efficiency is used to calculate the modulation current for a desired output power. This modulation current plus the threshold current
comprise the total operating current for the device.
3 1510 nm wavelength also available.
4. Corrected for electrical pulse fall time.
5. V
R
= reverse voltage.
Table 2. Electro-Optical Characteristics
(over operating temperature range unless otherwise noted)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Operating Temperature
Range
T
--
25
--
70
C
Optical Output Power
P
F
CW, peak
--
2
--
mW
Threshold Current
I
TH
T = 25
C
T = full range
5
2
11
--
15
60
mA
mA
Modulation Current
I
MOD
CW, P
F
= 2.0 mW, T = 25
C
CW, I
MON
= constant,
T = full range
15
7.5
25
--
35
60
1
mA
mA
Slope Efficiency
2
SE
CW, P
F
= 2.0 mW, T = 25
C
57
--
133
W/mA
Center Wavelength
3
C
P
F
= 2.0 mW, CW
1530
1550
1570
nm
Spectral Width (20 dB)
P
F
= 2.0 mW
--
--
1
nm
Side-mode Suppression
Ratio
SMSR
CW, P
F
= 2.0 mW
30
40
--
dB
Tracking Error
TE
I
MON
= constant, CW
--
--
1.5
dB
Spontaneous Emission
P
TH
I = (0.9) I
TH
--
--
100
W
Rise/Fall Times
t
R
, t
F
10%--90% pulse
4
, T = 25
C
--
0.125
0.175
ns
Dispersion Penalty
D
P
1200 ps/nm--1600 ps/nm;
typical, 1350 ps/nm
--
--
2.0
dB
Optical Return Loss
ORL
CW
18
--
--
dB
Forward Voltage
V
F
At bias coil
--
1.0
1.6
V
Input Impedance
R
--
--
25
--
Monitor Current
I
MON
V
R
5
= 5 V
100
--
1000
A
Monitor Dark Current
I
D
V
R
5
= 5 V
--
10
200
nA
Wavelength Tempera-
ture Coefficient
--
--
--
0.09
0.12
nm/
C
D572-Type 1.5
m Uncooled DFB
FastLight
Laser Module
Advance Data Sheet
for 2.5 Gbits/s and High-Bandwidth Applications
February 2000
4
Lucent Technologies Inc.
Qualification Information
The D572-Type Laser Module is scheduled to complete the following qualification tests and meets the intent of
Telcordia Technologies
TR-NWT-000468 for interoffice environments and TA-TSY-000983 for outside plant environ-
ments.
Table 3. D572-Type Laser Module Qualification Test Plan
Qualification Test
Conditions
Sample Size
Reference
Mechanical Shock
500 G
11
MIL-STD-883
Method 2002
Vibration
20 g, 20 Hz--2,000 Hz
11
MIL-STD-883
Method 2007
Solderability
--
11
MIL-STD-883
Method 2007
Thermal Shock
Delta T = 100
C
11
MIL-STD-883
Method 2003
Fiber Pull
1 kg; 3 times
11
Bellcore 983
Accelerated (Biased) Aging
85
C, 5,000 hrs.
25
Bellcore 983
Section 5.18
High-temperature Storage
85
C, 2,000 hrs.
11
Bellcore 983
Temperature Cycling
500 cycles
11
Bellcore 983
Section 5.20
Cyclic Moisture Resistance
10 cycles
11
Bellcore 983
Section 5.23
Damp Heat
40
C, 95% RH,
1344 hrs.
11
MIL-STD-202
Method 103
Internal Moisture
<5,000 ppm water vapor
11
MIL-STD-883
Method 1018
Flammability
--
--
TR357
Section 4.4.2.5
ESD Threshold
--
6
Bellcore 983
Section 5.22
Advance Data Sheet
D572-Type 1.5
m Uncooled DFB
FastLight Laser Module
February 2000
for 2.5 Gbits/s and High-Bandwidth Applications
5
Lucent Technologies Inc.
Outline Diagram
Dimensions are in inches and (millimeters).
39.37 (1000) MIN
(PIGTAIL LENGTH)
0.52 (13.21)
1.06 (27.0)
MIN
0.29 (7.37)
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND/OR DATE CODE IN APPROXIMATE AREA SHOWN
0.300 (7.62)
0.100 (2.54)
0.169 (4.30)
0.169 (4.30)
0.20 (5.00)
0.02 (0.50)
0.045 (1.143)
0.17
(4.32)
1.925.e