Wavelength-Selected, High-Power D2587P-Type (with Wavelength
Locker)/D2547P-Type Isolated DFB Laser Modules
Data Sheet, Rev. 2
July 2001
Characteristics
(continued)
Minimum and maximum values are testing requirements. Typical values are device characteristics and are results
of engineering evaluations; they are for information purposes only and are not part of the testing requirements.
Table 4. D2547P-Type Electrical Characteristics
(at 25 °C laser temperature)
Parameter
Threshold Current
Drive Current
Laser Forward Voltage
Monitor Reverse-bias Voltage*
Back-facet Monitor Current:
Monitor Dark Current
Input Impedance
Thermistor Current
Resistance Ratio
†
Thermistor Resistance
Laser Submount Temperature
TEC Current
TEC Voltage
TEC Capacity
Symbol
I
TH
—
V
LF
V
RMON
I
RMON
I
D
Z
IN
I
TC
—
R
TH
T
LASER
I
TEC
V
TEC
∆T
Test Conditions
—
L
F
= 20 mW
L
F
= 20 mW (CW)
—
P
O
= 20 mW (CW)
I
F
= 0, V
RMON
= 5 V
—
—
—
T
L
= 25 °C
—
T
L
= 25 °C, T
C
= 70 °C
T
L
= 25 °C, T
C
= 70 °C
T
C
= 70 °C
Min
—
—
—
3
0.2
—
—
10
9.1
9.5
20
—
—
—
Typ
15
—
2
5
—
0.01
25
—
9.6
—
—
—
—
—
Max
40
165
2.5
10
—
0.1
—
100
10.1
10.5
35
1.7
2.8
50
Unit
mA
mA
V
V
mA
µA
Ω
µA
—
kΩ
°C
A
V
°C
* Standard operating condition is 5.0 V reverse bias.
† Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C.
Table 5. D2547P-Type Optical Characteristics
(at 25 °C laser temperature)
Parameter
Peak Optical Output Power
Center Wavelength*
(See Ordering Information,
page 12.)
Line Width (3 dB full width)
Side-mode Suppression Ratio
Relative Intensity Noise
Optical Isolation
Optical Polarization Extinction
Ratio
†
FM Efficiency
Wavelength Drift (EOL)
Symbol
P
P
λ
C
Test Conditions
—
T
L
= T
SET
λ
C
=
λ
ITU
± 0.1 nm
CW, P
F
= 20.0 mW
CW
CW, P
F
= 20 mW
200 MHz < f < 10 GHz
T
C
= 0 °C to 75 °C
0 °C to 75 °C
f
MOD
= 30 kHz,
P
F
= 20 mW
Tested over
25-year lifetime
Min
20.0
1528.77
Typ
—
—
Max
—
1610.06
Unit
mW
nm
∆λ
SMSR
RIN
—
—
FM
∆λ
C
—
35
—
30
20
—
—
2
45
—
—
—
100
—
10
—
–135
—
—
—
±0.1
MHz
dB
dB/Hz
dB
dB
MHz/mA
nm
* Custom wavelengths available.
† The
ST
ferrule key is not aligned to slow axis of fiber. Connector is intended for testing purposes only.
6
Agere Systems Inc.