D371 Datasheet, PDF (3/8 Pages) Agere Systems – D371-Type Digital Uncooled DFB Laser Module

Data Sheet
January 1999
D371-Type Digital Uncooled DFB 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.
Electro/Optical Characteristics
Table 2. Electro/Optical Characteristics (over operating temperature range unless otherwise noted)
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
Operating Temperature
Range
Optical Output Power*
Threshold Current
Modulation Current
Slope Efficiency^†
Center Wavelength
Spectral Width (–20 dB)
Side-mode Suppression
Ratio
Tracking Error
Spontaneous Emission
Rise/Fall Times
Forward Voltage
Input Impedance
Monitor Current
Monitor Dark Current
Wavelength Tempera-
ture Coefficient
T
PF
ITH
IMOD
SE
λC
∆λ
SMSR
TE
PTH
tR, tF
VF
R
IMON
ID
—
—
–40
CW, nominal
T = 25 °C
T = full range
CW, PF = 2.0 mW, T = 25 °C
CW, IMON = const. T = full range
CW, PF = 2.0 mW, T = 25 °C
PF = 2.0 mW, CW
PF = 2.0 mW, 622 Mbits/s
CW, PF = 2.0 mW
—
4
2
10
7.5
67
1280
—
30
IMON = constant, CW
—
I = (0.9) ITH
—
10%—90% pulse
—
T = 25 °C
CW
—
—
3
VR^‡ = 5 V
50
VR^‡ = 5 V
—
—
—
—
2
11
—
20
—
—
—
—
40
0.5
—
0.25
1.1
—
—
10
0.09
85
°C
—
15
50
30
55
200
1335
1
—
mW
mA
mA
mA
µW/mA
nm
nm
dB
—
dB
50
µW
0.5
ns
1.6
8
1000
200
0.1
V
Ω
µA
nA
nm/°C
* 1 mW power option also 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.
‡ VR = reverse voltage.
Agere Systems Inc.
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