A1750A Datasheet, PDF (3/8 Pages) Agere Systems – A1750A DWDM Analog Forward-Path or Return-Path Laser Module

Data Sheet, Rev. 4
June 2001
A1750A DWDM Analog
Forward-Path or Return-Path Laser Module
Characteristics (continued)
Table 2. Additional Characteristics
Parameter
Symbol
Conditions
Min
Max
Bias Current¹ (Operating Current)
IB
BOL
—
120
Threshold Current
ITH
25 °C, BOL
—
30
Slope Efficiency²
η
IP = ITH + 20 and
0.10
—
ITH + 60
Monitor Photocurrent
IMON
IOP = 0 mA, VRM = 5 V,
10
200
TOP = 25 °C
Operating Chip Temperature³
TOP
IF = IOP
15
35
TEC Current
ITEC
–20 °C < TC < 65 °C,
–1.5
1.5
TOP = 15 °C—35 °C,
IF = 60 mA
TEC Voltage
VTEC TOP = 15 °C—35 °C over TC –2
2
Thermistor Resistance
RTH
TOP = 25 °C
9.5
10.5
Optical Return Loss
ORL
TC
40
—
Side Mode Suppression Ratio
SMSR
IF = IOP
30
—
1. Bias point at which all specifications apply.
2. For 10 mW output power. Minimum slope efficiency is lower for lower power lasers.
3. Chip temperature at which wavelength specification is met. Operating chip temperature is reported for each laser.
Electrical Schematics
Unit
mA
mA
mW/mA
µA/mW
°C
A
V
kΩ
dB
dB
1
14
NC
ISOLATOR
2
13 (+)
3
12 ^(–)
(–) 4
11 (+)
(+) 5
(+) 6
(–) 7
TEC
10
NC
CASE ⁹
GROUND
CASE ⁸
GROUND
1-1233F
Figure 1. A1750A Laser Schematic
Agere Systems Inc.
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