
2
Data Sheet, Rev. 4
A1611A/B DFB Laser Modules June 2001
Agere Systems Inc.
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Electrical/Optical Characteristics
* OMI = 2.8% min, 112 unmodulated NTSC channels, through fiber, up to 20 mW output power.
Parameter Symbol Condition Min Max Unit
Operating Case Temperature
Range TCIF = IOP –20 65 °C
Storage Case Temperature Range Tstg — –40 70 °C
Lase r Forward Bias — — — 120 mA
Reverse Voltage (Laser) VR——2V
Reverse Voltage Photodiode VRPD ——10V
TEC Current ITEC –20 °C < TC < 65 °C,
TOP = 25 °C,
IF = 100 mA
—1.5A
Table 1. Electrical and Optical Characteristics
Parameter Symbol Condition Min Typ Max Unit
Wa velength λOP IF = IOP
, T = TOP 1300 1310 1320 nm
Optic al Output Power POIF = IOP 4—13mW
Optical Isolation ISO T OP = 25 °C 30 — — dB
Side Mode Suppression
Ratio SMSR IF = IOP 30 — — dB
Threshold Current ITH 25 °C , BOL — — 30 mA
Operating Current IOP BOL — 65 120 mA
Monitor Operating Current IMON IOP = 0 mA 10 — 200 µA/mW
Thermistor Resistance RTH TOP = 25 °C — 10 ± 1 @ 25 °C — kΩ
Thermisto r Tem peratur e
Coefficient TCTH TOP = 25 °C — –4.4 @ 25 °C — %/°C
Table 2. RF Characteristics
Parameter Symbol Condition Min Typ Max Unit
Frequency Range F — 20 — 860 MHz
Frequency Response |S21| IF = 60 mA,
20 MHz—860 MHz,
TOP = 25 °C
—± 0.5 —dB
Carrier-to-Noise Ratio*CNR — — 51 — dB
Composite Second Order
1611A
1611B
CSO — —
—57
60 —
——
—
Composite Triple Beat CTB — — 66 — dB
Relative Intensity Noise RIN — — < –155 — dB/Hz