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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 efciency 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.
VR = 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*
PF
CW, nominal
—
1
—
mW
Threshold Current
ITH
T = 25
°C
T = full range
4.5
1
9
—
15
45
mA
Modulation Current
IMOD
CW, PF = 1.0 mW, T = 25
°C
CW, IMON = constant
T = full range
10
8
15
—
20
35
mA
Slope Efciency
SE
CW, PF = 1.0 mW, T = 25
°C
50
75
100
W/mA
Center Wavelength
λC
PF = 1.0 mW, CW
1270
—
1350
nm
RMS Spectral Width
λ
PF = 1.0 mW, 155 Mbits/s
—
2
3
nm
Tracking Error
TE
IMON = constant, CW
—
0.5
±1dB
Spontaneous Emission
PTH
I = ITH x 0.9
—
50
W
Rise/Fall Times
tR, tF
10%—90% pulse, T = 25
°C
—
0.25
0.5
ns
Forward Voltage
VF
CW
—
1.1
1.6
V
Input Impedance
R
—
3
—
8
Monitor Current
IMON
VR = 5 V
150
—
750
A
Monitor Dark Current
ID
VR = 5 V
—
10
200
nA
WavelengthTemperature
Coefcient
—
0.4
0.5
nm/
°C