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LASER DIODES OL4492L, OL5492L/A, OL5492L/B
¡ electronic components
OL4492L, OL5492L/A, OL5492L/B
1.48, 1.51, 1.52 mm Coaxial DFB Laser Module
GENERAL DESCRIPTION
The OL4492L, OL5492L/A, and OL5492L/B are MQW-DFB laser diode coaxial modules with
optical isolator and single-mode fiber pigtails. These modules are optimal light sources for
WDM supervisory channel in SDH system with optical in-line amplifier.
FEATURES
• Single-mode fiber output: Pf=2 mW
• Side mode suppression ratio: 30dB
• Includes monitor PD for power control
• Built-in optical isolator
• Wide operation temperature range
• Multi-quantum-well (MQW) structure
APPLICATIONS
• WDM supervisory channel in SDH system with optical in-line amplifier
E2V0034-37-X1
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LASER DIODES OL4492L, OL5492L/A, OL5492L/B
PACKAGE DIMENSIONS (Unit: mm)
• OL4492L, OL5492L/A, OL5492L/B
qw
LD
CASE
f6.8
f4
r
q
2r
4–f0.45
26.613
2–f2.2
4
7
12.7
17
6.41
e
PD
e
w
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LASER DIODES OL4492L, OL5492L/A, OL5492L/B
Parameter Symbol Ratings Unit
Fiber Output
LD Forward Current
Operating Temperature
Storage Temperature
Pf
I
F
(LD)
T
opr
T
stg
3mW
150 mA
0 to +65 °C
–40 to +85 °C
PD Reverse Voltage V
R
(PD) 20 V
PD Forward Current I
F
(PD) 10 mA
Test Conditions
—
—
Ta=25°C
ABSOLUTE MAXIMUM RATINGS
OPTICAL AND ELECTRICAL CHARACTERISTICS
Peak Wavelength
Model Symbol Min. Unit
OL4492L
OL5492L/A
OL5492L/B
lp
1470
1500 nm
1510
(Ta=0 to 65°C)
Max.
1490
1520
1530
Test Conditions
Pf=2mW
Parameter Symbol Min. Unit
Threshold Current
Operating current
Ith
I
op
—mA
—mA
(Ta=25°C)
Typ.
—
—
Max.
40
120
Test Conditions
—
Pf=2 mW
Side Mode Suppresion Ratio SMSR 30 dB——Pf=2 mW
Rise Time t
r
—ns— 0.5Ibias=Ith
Fall Time t
f
—ns— 0.5
Pf=2 mW, 10% to 90%
Forward Voltage V
F
—V1.1 1.5Pf=2 mW
PD Dark Current I
DARK
—nA0.5 20V
R
(PD)=5 V
Monitor Current Im 50 mA——
V
R
(PD)=5 V, Pf=2 mW
Fiber Output Power Pf 2 mW——CW
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LASER DIODES OL4492L, OL5492L/A, OL5492L/B
TYPICAL CHARACTERISTICS
• OL4492L
• OL4492L
Fiber Output Power vs. Forward Current (Ta=25°C)
Forward Current I
F
(mA)
Fiber Output Power Pf (mW)
0
3.5
0 20406080100
0 0.4 0.8 1.2 1.6 2
Monitor Current I
m
(mA)
2.8
2.1
1.4
0.7
(Pf–I
m
)
(Pf–I
F
)
Oscillation Spectrum (Ta=25°C)
1469.1 1479.1 1489.1
Wavelength (nm)
–75
–55
–35
–15
5
Relative Intensity (dB)
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LASER DIODES OL4492L, OL5492L/A, OL5492L/B
TYPICAL CHARACTERISTICS (Continued)
• OL5492L/A
• OL5492L/A
Fiber Output Power vs. Forward Current (Ta=25°C)
Forward Current I
F
(mA)
Fiber Output Power Pf (mW)
0
3
0 20406080100
0 0.4 0.8 1.2 1.6 2
Monitor Current I
m
(mA)
2.4
1.8
1.2
0.6
(Pf–I
F
) (Pf–I
m
)
Oscillation Spectrum (Ta=25°C)
1499.9 1509.9 1519.9
Wavelength (nm)
–75
–55
–35
–15
5
Relative Intensity (dB)
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LASER DIODES OL4492L, OL5492L/A, OL5492L/B
TYPICAL CHARACTERISTICS (Continued)
• OL5492L/B
• OL5492L/B
Fiber Output Power vs. Forward Current (Ta=25°C)
Forward Current I
F
(mA)
Fiber Output Power Pf (mW)
0
3
0 20406080100
0 0.4 0.8 1.2 1.6 2
Monitor Current I
m
(mA)
2.4
1.8
1.2
0.6
(Pf–I
m
)
(Pf–I
F
)
Oscillation Spectrum (Ta=25°C)
1513.9 1523.9 1533.9
Wavelength (nm)
–75
–55
–35
–15
5
Relative Intensity (dB)