D2500 Datasheet, PDF (4/8 Pages) Agere Systems – 1.5 m m D2500-Type Digital Isolated DFB Laser Module

1.5 µm D2500-Type Digital
Isolated DFB Laser Module
Data Sheet
February 2000
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 test-
ing requirements.
Table 1. Electrical Characteristics (at 25 °C Laser Temperature)
Parameter
Symbol
Test Conditions
Laser Forward Voltage
Slope Efficiency
Threshold Current
VLF
LF = 2 mW (CW)
η
LF = 2 mW (CW)
ITH
—
Monitor Reverse-bias Voltage* VRMON
—
Monitor Current
IRMON
PO = 1 mW (CW)
Monitor Dark Current
ID
IF = 0, VRMON = 5 V
Input Impedance
ZIN
—
Thermistor Current
Resistance Ratio^†
ITC
—
—
—
Thermistor Resistance
TEC Current
RTH
ITEC
TL = 25 °C
TL = 25 °C, TC = 70 °C
TEC Voltage
TEC Capacity
VTEC
∆T
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
—
0.025
—
3
0.1
—
—
10
8.6
9.5
—
—
50
Typ
1.3
0.10
12
5
1.0
0.01
25
—
—
—
0.6
1.3
—
Max
Unit
1.8
V
— mW/mA
50
mA
10
V
2.0
mA
0.1
µA
—
Ω
100
µA
9.6
—
10.5
kΩ
1.0
A
2.0
V
—
°C
Table 2. Optical Characteristics (at 25 °C Laser Temperature)
Parameter
Peak Optical Output Power
Center Wavelength
Spectral Width:
Full Width at –3 dB
Full Width at –20 dB
Side-mode Suppression Ratio
Optical Isolation
Symbol
Test Conditions
Min Typ Max Unit
PPEAK
—
2.0
—
— mW
λC
—
1530 — 1570 nm
∆λ
Modulated at 2.5 Gbits/s at — 0.20 0.30 nm
rated power
—
0.8 1.0 nm
SMSR Modulated at 2.5 Gbits/s 30
—
—
dB
—
0 °C to 65 °C
30
—
—
dB
Table 3. Dispersion Performance (examples of dispersion penalty specifications)
Parameter
Dispersion Penalty:*
D2502
D2511
D2517
Symbol Test Conditions Min Typ Max Unit
DP
1350 ps/nm
— — 2.0 dB
DP
1800 ps/nm
— — 2.0 dB
DP
3000 ps/nm
— — 2.0 dB
* Other dispersion penalties at various dispersions available.
4
Lucent Technologies Inc.