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OL4121N-120 and OL4121N-140
High-Power Laser Diode Butterfly Modules
(1480 nm, 120 mW/140 mW)
February 2000
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CONTENTS
OL4121N-120 and OL4121N-140 High-Power Laser Diode Butterfly Modules
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Oki Semiconductor
OL4121N-120 and OL4121N-140
High-Power Laser-Diode Butterfly Modules
INTRODUCTION
Oki Semiconductor’s OL4121N-120/OL4121N-140 family of 1480-nm high-power laser diodes are avail-
able in a 14-pin “butterfly” package which is designed for high-performance fiber-optic applications. The
OL4121N-120 and OL4121N-140 diodes have a built-in thermo-electric cooler, thermistor, and isolator,
and have a single-mode fiber pigtail.
The OL4121N is available in two optional power levels: 120 mW or 140 mW. These laser diodes can be
used as a pumping source for an Er- (erbium) doped fiber-optic amplifier. The high power output of the
laser diodes in the OL4121N family supports the high-performance demands of Erbium-Doped Fiber-
optic Amplifiers in Dense Wavelength Division Multiplex (DWDM-EDFA) systems and long-haul terres-
trial networks.
FEATURES
• High power output:
•
•
•
•
•
Pf=120 mW (OL4121N-120)
Pf=140 mW (OL4121N-140)
14-pin “butterfly” package
Single-mode fiber
Built-in isolator
Includes photodiode for power monitoring
Built-in thermo-electric cooler (TEC)
APPLICATION
•
•
•
•
WDM/DWDM systems
Erbium-doped fiber amplifier
Regeneration of data
Fiber-optic long-haul terrestrial networks
Oki Semiconductor
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OL4121N-120 and OL4121N-140
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ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings (ambient temperature Ta = 25°C unless otherwise noted)
Parameter
Fiber Output Power
OL4121N-120
OL4121N-140
Laser Diode Forward Current
OL4121N-120
OL4121N-140
Laser Diode Reverse Voltage
Photo Diode Reverse Voltage
Operating Temperature Range
Storage Temperature Range
V
R(LD)
V
R(PD)
Topr
Tstg
I
F(LD)
Symbol
Pf
Ratings
130
160
750
800
2
15
-20 to +65
-40 to +70
Units
mW
mW
mA
mA
V
V
°C
°C
Exceeding these maximum ratings could cause immediate damage or lead to permanent deterioration of the device.
Optical and Electrical Characteristics (Ta = 25°C)
Parameter
Threshold Current
Laser Diode Operating Current
OL4121N-120
OL4121N-140
Laser Diode Operating Voltage
Center Wavelength
RMS Spectral Width
Tracking Error
PD Dark Current
Monitor Current
Thermoelectric Cooler Capacity
Thermoelectric Cooler Current
Thermoelectric Cooler Voltage
Thermistor Resistance
Vop
(LD)
λ
c
σ
TER
I
DARK
Im
∆
T
I
TEC
V
TEC
Rth
Symbol
I
TH
Iop
(LD)
Test Conditions
---
Pf = 120 mW
Pf = 140 mW
Pf = 120 / 140 mW
Pf = 120 / 140 mW
Pf = 120 / 140 mW (RMS)
I
M
= const., 0/ 25/ 65°C
V
R(PD)
= 5 V
Pf = 120 / 140 mW, V
R(PD)
= 5 V
Pf = 120 / 140 mW
∆
T = 40°C, Pf = 120 / 140 mW
∆
T = 40°C, Pf = 120 / 140 mW
---
---
1460
---
---
---
100
40
---
---
9
---
---
---
---
---
---
---
---
---
---
Min.
---
---
Typ.
---
---
Max.
60
600
700
2.5
1490
10
+/-1.0
100
---
---
1.5
4.0
11
Units
mA
mA
mA
V
nm
nm
dB
nA
µ
A
°C
A
V
K
Ω
Fiber Pigtail Specifications
Parameter
Type
Mode Field Diameter
Cladding Diameter
Jacket Diameter
Length
Connector
Specifications
SM
10 +/-1
125 +/-2
900
1.0 (Minimum)
FC
Units
---
µ
m
µ
m
µ
m
m
---
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Oki Semiconductor
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OL4121N-120 and OL4121N-140
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PACKAGE DIMENSIONS
(Units: mm)
30
26
20.83
8.0
5.4
5.35
d = 2.6
36 (min.)
12.7
8.9
16
26
±
1
5.6
0.48 ±
±
0.2
0.35 0.2
2.54
17.78
0.25
±
0.1
0.2
±
14.7
1.52
8° Angled ø2.5mm
Ferrule
1000 (min.)
1100 (min.)
280
±
10
5.1
50
±
20
ø0.9mm Loose Tube
Tolerance = ±0.5 mm (unless noted otherwise)
TERMINAL CONNECTION (BOTTOM VIEW)
#8
#9
#10
LD
TH
CASE
PD
#7
#6
#5
#4
#3
#2
#1
T.E.C
(+)
TH:
T.E.C:
#11
#12
#13
#14
(-)
FIBER
Thermistor
Thermo-Electric Cooler
Pin Configuration
Pin No.
01
02
03
04
05
06
07
Description
Thermo Electric Cooler (+)
Thermistor
PD Anode
PD Cathode
LD Anode
NC
NC
Pin No.
08
09
10
11
12
13
14
NC
NC
LD Anode
LD Cathode
NC
Thermistor and Case Ground
Thermo Electric Cooler Cathode (-)
Description
Oki Semiconductor
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