D2570 Datasheet, PDF (4/12 Pages) Agere Systems – D2570, D2526, D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module

D2570, D2526G, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
Data Sheet, Rev. 3
July 2001
D2526 Characteristics
Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are
the result of engineering evaluations. Typical values are for information purposes only and are not part of the testing
requirements.
Table 1. Electrical Characteristics (at 25 °C laser temperature)
Parameter
Symbol
Test Conditions
Slope Efficiency
Threshold Current
Laser Forward Voltage
Laser Submount Temperature
Monitor Reverse-bias Voltage*
Monitor Current
Monitor Dark Current
Input Impedance
Thermistor Current
Resistance Ratio^†
Thermistor Resistance
TEC Current
TEC Voltage
TEC Capacity
η
ITH
VLF
TLASER
VRMON
IRMON
ID
ZIN
ITC
—
RTH
ITEC
VTEC
∆T
LF = 2 mW (CW)
—
LF = 2 mW (CW)
—
—
POL = 1 mW (CW)
IF = 0, VRMON = 5 V
—
—
—
TL = 25 °C
TL = 25 °C, TC = 70 °C
TL = 25 °C, TC = 70°C
TC = 70 °C
* Standard operating condition is 5.0 V reverse bias.
† Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C.
Min
0.06
—
—
20
3
0.1
—
—
10
9.1
9.5
—
—
—
Typ
0.09
14
1.3
—
5
0.3
0.01
25
—
—
—
0.6
1.3
—
Max
Unit
0.13 mW/mA
30
mA
1.8
V
30
°C
10
V
1.5
mA
0.1
µA
—
Ω
100
µA
9.6
—
10.5
kΩ
1.0
A
2.0
V
50
°C
Table 2. Optical Characteristics (at 25 °C laser temperature)
Parameter
Peak Optical Output Power
Center Wavelength
(See Table 10.)
Line Width (3 dB full width)
Side-mode Suppression Ratio
Optical Isolation
Wavelength Drift (EOL)
Center Wavelength Drift with
Case Temperature
Wavelength Temperature Tuning
Coefficient
Tracking Error
Symbol
Test Conditions
PPEAK
λc
∆λ
SMSR
—
TL = 25 °C
CW wavelength
Modulated at 2.5 Gbits/s
at rated power
CW
—
∆λ
∆λC/∆TC
TC = 0 °C to 70 °C
Tested over
25-year lifetime
0 °C ≤ TC ≤ 70 °C
—
—
— TC = –20 °C/25 °C/70 °C
Min
2.0
1528.77
—
30
30
—
—
—
—
Typ
Max
Unit
—
—
mW
— 1610.06 nm
2
10
MHz
—
—
dB
—
—
dB
—
±0.1
nm
—
1
pm/°C
0.095
—
nm/°C
—
1
dB
Table 3. Dispersion Performance
Parameter
Dispersion Penalty for Extended Reach
Symbol
Test
Conditions
Min Typ
Max
Unit
DP
1800 ps/nm
—
—
2.0
dB
4
Agere Systems Inc.