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
Symbol
ITH
Test Conditions
Min
—
Typ
15
—
Max
40
Unit
mA
mA
V
—
Drive Current
—
LF = 20 mW
—
165
2.5
10
Laser Forward Voltage
Monitor Reverse-bias Voltage*
Back-facet Monitor Current:
Monitor Dark Current
Input Impedance
VLF
LF = 20 mW (CW)
—
2
VRMON
IRMON
ID
—
3
5
V
PO = 20 mW (CW)
0.2
—
—
—
mA
µA
Ω
IF = 0, VRMON = 5 V
0.01
25
—
0.1
—
ZIN
—
—
Thermistor Current
Resistance Ratio†
ITC
—
—
10
9.1
9.5
20
—
100
10.1
10.5
35
µA
—
—
9.6
—
Thermistor Resistance
Laser Submount Temperature
TEC Current
RTH
TLASER
ITEC
VTEC
∆T
TL = 25 °C
kΩ
°C
A
—
—
TL = 25 °C, TC = 70 °C
TL = 25 °C, TC = 70 °C
TC = 70 °C
—
1.7
2.8
50
TEC Voltage
—
—
V
TEC Capacity
—
—
°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
Symbol
PP
Test Conditions
Min
Typ
Max
Unit
mW
nm
Peak Optical Output Power
—
20.0
—
—
—
Center Wavelength*
(See Ordering Information,
page 12.)
λC
TL = TSET
λC = λITU ± 0.1 nm
1528.77
1610.06
Line Width (3 dB full width)
Side-mode Suppression Ratio
Relative Intensity Noise
∆λ
CW, PF = 20.0 mW
CW
—
35
—
2
10
—
MHz
dB
SMSR
RIN
45
—
CW, PF = 20 mW
–135
dB/Hz
200 MHz < f < 10 GHz
Optical Isolation
—
—
TC = 0 °C to 75 °C
0 °C to 75 °C
30
20
—
—
—
—
dB
dB
Optical Polarization Extinction
Ratio†
FM Efficiency
FM
fMOD = 30 kHz,
PF = 20 mW
—
—
100
—
—
MHz/mA
nm
Wavelength Drift (EOL)
∆λC
Tested over
±0.1
25-year lifetime
* 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.
AGERE [ AGERE SYSTEMS ]
