Finisar HFE4083-322 User Manual
ELECTRO-OPTICAL CHARACTERISTICS (TA=25
oC unless otherwise stated)
VCSEL Parameters
Test Condition
Symbol
Min.
Typ.
Max.
Units
Notes
Peak Operating Current
Adjustable to establish
operating power
operating power
I peak
12
20 mA 2
Optical Power Output
I F =12mA Po
0.9 1.8 3.6
mW 2,3
Threshold Current
I TH 1.5
3.5 6 mA
Threshold Current
Temperature Variation
Temperature Variation
T A = 0
o
C to 70
o
C
∆ I TH
-1.5 1.5 mA 4
Slope Efficiency
Po =1.3mW
η
0.1 0.25 0.4 mW/mA 5
Slope Efficiency
Temperature variation
Temperature variation
T A = 0
o
C to 70
o
C
∆ η /∆ T
-0.5
%/ oC
Peak Wavelength
I F =12mA
λ P
830 850 860
nm
λ P Temperature Variation
I F =12mA
∆ λ P/∆ T
0.06 nm/o C
Spectral Bandwidth, RMS
I F =12mA
∆ λ
0.85 nm
Laser Forward Voltage
I F =12 mA
V F 1.6
1.8 2.2 V
Laser Reverse Voltage
I R =10 µA
BVR LD 5 10
V
Rise and Fall Times
Prebias Above
Threshold, 20% -80%
Threshold, 20% -80%
tr
tf
tf
150
200
300
300
ps 6
Relative Intensity Noise
1 GHz BW, I
F=12mA RIN
-128
-122
dB/Hz
Series Resistance
I F =12 mA
RS
18 25 40 Ohms
Beam Divergence
I F =12 mA
θ
5 15 20 Degrees 7
Photodiode Parameters
Test Condition
Symbol
Min.
Typ.
Max.
Units
Notes
Monitor Current
Po =1.3mW
I PD
0.015 0.056 mA
Monitor current
Temperature Variation
Temperature Variation
Po =1.3mW
∆ I PD /∆T
0.2 %/ oC
Dark Current
Po =0mW, V R =3V I D 20 nA
PD Reverse Voltage
Po =0mW, I R =10 µA
BVR PD 30 115
V
8
PD Capacitance
V R=0V, Freq=1MHz
V R=3V, Freq=1MHz
V R=3V, Freq=1MHz
C
75
40
100
55
pF
HFE408X-322
ELECTRICAL-OPTICAL CHARACTERISTICS