D370-Type Digital Uncooled
Laser Module
Data Sheet
October 2000
The low-profile D370-Type Laser Module is ideally suited for
short- and long-reach SONET and other high-speed digital
applications.
Features
s
Eight-pin package suitable for SONET/SDH appli-
cations
s
MQW F-P 1.3
m laser with single-mode fiber pig-
tail
s
Wide operating temperature range:
40
C to +85
C
s
No TEC required
s
High output power: typically 1.0 mW peak power
coupled into single-mode fiber; 0.2 mW and
2.0 mW versions available
s
Hermetically sealed active components
s
Internal back-facet monitor
s
Qualification program:
Telcordia Technologies
*
TA-983
*
Telcordia Technologies
is a registered trademark of Telcordia
Technologies, Inc.
Applications
s
Long-reach SONET OC-3/OC-12 systems
s
SDH STM-1/STM-4 systems
s
Telecommunications
s
Secure digital data systems
Benefits
s
Easily board mounted
s
Requires no lead bending
s
No additional heat sinks required
s
Pin compatible with industry-standard, 14-pin laser
module
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.
Data Sheet
D370-Type Digital Uncooled Laser Module
October 2000
2
2
Agere Sysems Inc.
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
central office and uncontrolled environments, and can
be used for applications requiring high performance
and low cost.
Table 1. Pin Descriptions
Pin Number
Connection
1
NC/reserved
2
Case ground
3
NC/reserved
4
Photodiode cathode
5
Photodiode anode
6
Laser diode cathode
7
Laser diode anode
8
NC/reserved
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.
* 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
RD
--
--
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
5
6
8
7
4
3
1
2
Data Sheet
October 2000
D370-Type Digital Uncooled Laser Module
3
Agere Sysems Inc.
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
* 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.
Table 2. Electrical/Optical Characteristics
(over operating temperature range unless otherwise noted)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Operating Temperature
Range
T
--
40
--
85
C
Optical Output Power*
P
F
CW, nominal
--
1
--
mW
Threshold Current
I
TH
T = 25
C
T = full range
4.5
1
9
--
15
45
mA
mA
Modulation Current
I
MOD
CW, P
F
= 1.0 mW, T = 25
C
CW, I
MON
= constant
T = full range
10
8
15
--
20
35
mA
mA
Slope Efficiency
SE
CW, P
F
= 1.0 mW, T = 25
C
50
75
100
W/mA
Center Wavelength
C
P
F
= 1.0 mW, CW
1270
--
1350
nm
RMS Spectral Width
P
F
= 1.0 mW, 155 Mbits/s
--
2
3
nm
Tracking Error
TE
I
MON
= constant, CW
--
0.5
1
dB
Spontaneous Emission
P
TH
I = I
TH
x 0.9
--
--
50
W
Rise/Fall Times
t
R
, t
F
10%--90% pulse, T = 25
C
--
0.25
0.5
ns
Forward Voltage
V
F
CW
--
1.1
1.6
V
Input Impedance
R
--
3
--
8
Monitor Current
I
MON
V
R
= 5 V
150
--
750
A
Monitor Dark Current
I
D
V
R
= 5 V
--
10
200
nA
Wavelength Temperature
Coefficient
--
--
--
0.4
0.5
nm/
C
Data Sheet
D370-Type Digital Uncooled Laser Module
October 2000
4
Agere Sysems Inc.
Characteristic Curve
Figure 2. Typical D370-Type Laser Module L/I Curve
0
25
50
150
0
1.0
3.0
TEMP = 25
o
C
75
100
125
2.0
VOLTAGE (mV)
CURRENT (A)
0
500
1000
1500
2000
2500
LASER CURRENT (mA)
FORWARD LASER
VOLTAGE
LASER POWER (mW)
MONITOR DIODE
CURRENT
L/I CURVE
V
O
L
T
A
GE (mV)
CURRENT (
A)
1-884
Data Sheet
October 2000
D370-Type Digital Uncooled Laser Module
5
Agere Sysems Inc.
Outline Diagram
Dimensions are in inches and (millimeters).
0.010
(0.254)
0.30
(7.62)
0.29
(7.37)
0.085
(2.16)
0.17
(4.32)
0.20 (5.00)
0.165 (4.20)
0.016 (0.410)
0.100 (2.54)
0.300
(7.62)
0.110 (2.79)
0.045 (1.143)
4
3
2
1
5
6
7
8
39.37 (1000) MIN
PIGTAIL LENGTH
0.52 (13.2)
1.06 (27.0)
MIN
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND/OR DATE CODE IN APPROXIMATE AREA SHOWN
1-899.f
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