Preliminary Data Sheet
March 2001
D1861A 10 Gbits/s 1310 nm DML Module (10 dBm)
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. RF input shall be ac coupled. It is recommended that a series induc-
tor of 100 µH be placed external to the device on Pin 3.
Parameter
Symbol
Condition
Min
Max
Unit
Operating Temperature Range
Storage Case Temperature Range
Laser Forward Bias
Pin 3, Max Positive Voltage1
Pin 3, Max Positive Current1
Reverse Voltage Photodiode
TEC Current
TOP
Tstg
—
—
—
–40
–40
—
80
85
°C
°C
mA
V
TEC On
—
150
1
VR
—
IR
—
—
200
20
mA
V
VRPD
ITEC
—
—
—
—
1.7
A
1. RF connector ac coupled.
Electrical/Optical Characteristics
Table 2. Electrical and Optical Characteristics (Case temperature, –5 °C to +80 °C; laser temperature, 25 °C
unless otherwise noted.)
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Average Optical Output Power
PO
IOP ≈ ITH + 30 mA
7
—
—
mW
Threshold Current (BOL)
Wavelength
ITH
λ
—
—
2
1290
—
—
—
30
1320
—
mA
nm
Wavelength Tuning Coefficient
External Efficiency
∆λT
η
—
0.085
—
nm/°C
W/A
dB
—
0.24
35
—
ac Side-mode Suppression Ratio SMSR
IOP
—
—
1
Chromatic Dispersion Penalty
(50 km, SMF28, 200 ps/nm)
—
—
—
—
1.0
dB
Optical Isolation
—
—
32
14
—
10
—
—
—
—
—
—
30
—
dB
GHz
kHz
dB
2
High-frequency Cutoff (3 dB)
Low-frequency Cutoff (3 dB)
FHIGH
FLOW
IS11I
IOP
2
IOP
RF Return Loss, 50 Ω
IOP
(0.1 GHz—8 GHz)
1
Rise/Fall Time, 10%—90%
Thermoelectric Cooler Current
Thermistor Resistance
tR/tF
ITEC
RTH
—
—
—
—
—
—
50
1.3
ps
A
—
—
9.5
—
10
10.5
—
kΩ
Thermistor Coefficient
—
–4.4
—
%/°C
µA
Monitor Photodiode Current
IMPD
IOP
40
1500
23
1. 10 Gbits/s PRBS 2 –1, ER = 8.2 dB, @ IOP, TOP = 25 °C, typical 50 mAp–p drive current.
2. Measurements made with 100 µH in series with pin 3 (laser cathode).
2
Agere Systems Inc.
AGERE [ AGERE SYSTEMS ]
