Data Sheet
October 2000
D370-Type Digital Uncooled
Laser Module
Applications
s
s
s
s
Long-reach SONET OC-3/OC-12 systems
SDH STM-1/STM-4 systems
Telecommunications
Secure digital data systems
Benefits
s
Easily board mounted
Requires no lead bending
No additional heat sinks required
Pin compatible with industry-standard, 14-pin laser
module
The low-profile D370-Type Laser Module is ideally suited for
short- and long-reach SONET and other high-speed digital
applications.
s
s
s
Features
s
Eight-pin package suitable for SONET/SDH appli-
cations
MQW F-P 1.3
µ
m laser with single-mode fiber pig-
tail
Wide operating temperature range:
–40
°
C to +85
°
C
No TEC required
High output power: typically 1.0 mW peak power
coupled into single-mode fiber; 0.2 mW and
2.0 mW versions available
Hermetically sealed active components
Internal back-facet monitor
Qualification program:
Telcordia Technologies
*
TA-983
Description
The D370-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-haul (SONET) and other digital applications.
The module includes a multiquantum-well Fabry-
Perot (MQW F-P) laser and an InGaAs PIN photo-
diode back-facet monitor in an epoxy-free, hermeti-
cally sealed package.
s
s
s
s
s
s
s
*
Telcordia Technologies
is a registered trademark of Telcordia
Technologies, Inc.
D370-Type Digital Uncooled Laser Module
Data Sheet
October 2000
central office and uncontrolled environments, and can
be used for applications requiring high performance
and low cost.
Table 1. Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
Connection
NC/reserved
Case ground
NC/reserved
Photodiode cathode
Photodiode anode
Laser diode cathode
Laser diode anode
NC/reserved
Description
(continued)
The device characteristics listed in this document are
met at 1.0 mW output power. Higher- or lower-power
operation is possible. Under conditions of a fixed pho-
todiode current, the change in optical output is typically
±
0.5 dB over an operating temperature range of –40
°
C
to +85
°
C.
This device incorporates the new laser 2000 manufac-
turing process from the Optoelectronic Products unit of
Agere Systems Inc. Laser 2000 is a low-cost platform
that targets high-volume manufacturing and tight prod-
uct distributions on all optical subassemblies. This plat-
form incorporates an advanced optical design that is
produced on Agere Systems’ highly automated produc-
tion lines. The laser 2000 platform is qualified for the
4
3
2
1
5
6
7
8
1-900
Figure 1. D370-Type Digital Uncooled 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.
Parameter
Maximum Peak Laser Drive Current or
Maximum Fiber Power *
Peak Reverse Laser Voltage:
Laser
Monitor
Monitor Forward Current
Operating Case Temperature Range
Storage Case Temperature Range
Lead Soldering Temperature/Time
Relative Humidity (noncondensing)
* Rating varies with temperature.
Symbol
I
OP
P
MAX
V
RL
V
RD
I
FD
T
C
T
stg
—
RH
Min
—
—
—
—
—
–40
–40
—
—
Max
150
10
2
20
2
85
85
260/10
85
Unit
mA
mW
V
V
mA
°
C
°
C
°
C/s
%
2
Agere Sysems Inc.
Data Sheet
October 2000
D370-Type Digital Uncooled Laser Module
Handling Precautions
Caution: This device is susceptible to damage as a result of electrostatic discharge (ESD). Take proper pre-
cautions during both handling and testing. Follow guidelines such as JEDEC Publication No. 108-
A (Dec. 1988).
Although protection circuitry is designed into the device, take proper precautions to avoid exposure to ESD.
Electrical/Optical Characteristics
Table 2. Electrical/Optical Characteristics
(over operating temperature range unless otherwise noted)
Parameter
Operating Temperature
Range
Optical Output Power*
Threshold Current
Modulation Current
Symbol
T
P
F
I
TH
I
MOD
Test Conditions
—
CW, nominal
T = 25
°
C
T = full range
CW, P
F
= 1.0 mW, T = 25
°
C
CW, I
MON
= constant
T = full range
CW, P
F
= 1.0 mW, T = 25
°
C
P
F
= 1.0 mW, CW
P
F
= 1.0 mW, 155 Mbits/s
I
MON
= constant, CW
I = I
TH
x 0.9
10%—90% pulse, T = 25
°
C
CW
—
V
R‡
= 5 V
V
R‡
= 5 V
—
Min
–40
—
4.5
1
10
8
50
1270
—
—
—
—
—
3
150
—
—
Typ
—
1
9
—
15
—
75
—
2
0.5
—
0.25
1.1
—
—
10
0.4
Max
85
—
15
45
20
35
100
1350
3
±
1
50
0.5
1.6
8
750
200
0.5
Unit
°
C
mW
mA
mA
mA
mA
µ
W/mA
nm
nm
dB
µ
W
ns
V
Ω
µ
A
nA
nm/
°
C
Slope Efficiency
†
Center Wavelength
RMS Spectral Width
Tracking Error
Spontaneous Emission
Rise/Fall Times
Forward Voltage
Input Impedance
Monitor Current
Monitor Dark Current
Wavelength Temperature
Coefficient
SE
λ
C
∆λ
TE
P
TH
t
R
, t
F
V
F
R
I
MON
I
D
—
* Higher and lower powers available. See Table 4 for more information.
† 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.
‡ V
R
= reverse voltage.
Agere Sysems Inc.
3
D370-Type Digital Uncooled Laser Module
Data Sheet
October 2000
Characteristic Curve
3.0
2500
L/I CURVE
LASER POWER (mW)
2000
1500
1.0
FORWARD LASER
VOLTAGE
1000
MONITOR DIODE
CURRENT
500
0
0
25
50
75
100
TEMP = 25
o
C
125
150
0
LASER CURRENT (mA)
Figure 2. Typical D370-Type Laser Module L/I Curve
4
Agere Sysems Inc.
VOLTAGE (mV)
VOLTAGE (mV)
CURRENT (µA)
CURRENT (µA)
1-884
2.0
Data Sheet
October 2000
D370-Type Digital Uncooled Laser Module
Outline Diagram
Dimensions are in inches and (millimeters).
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND/OR DATE CODE IN APPROXIMATE AREA SHOWN
4
3
2
1
5
6
7
8
1.06 (27.0)
MIN
0.52 (13.2)
39.37 (1000) MIN
PIGTAIL LENGTH
0.045 (1.143)
0.20 (5.00)
0.010
(0.254)
0.29
(7.37)
0.165 (4.20)
0.016 (0.410)
0.100 (2.54)
0.300
(7.62)
0.110 (2.79)
0.085
(2.16)
0.17
(4.32)
0.30
(7.62)
1-899.f
Agere Sysems Inc.
5
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