460
Laser Safety Warning
This device is a Class IIIb (3b) Laser Product. It may emit invisible laser radiation if operated with the fiber pigtail disconnected. To avoid
possible eye damage do not look into an unconnected fiber pigtail during laser operation. Do not exceed specified operating limits.
Description
LSCX110
1 mW 14 Pin DIL Cooled Laser
Modules
Technical Data
Features
• 1 Milliwatt Optical
Output at 25 mA
above Threshold, 25°C
• Center Wavelength between
1280 nm and 1330 nm
• Wide Modulation
Bandwidth:
LSC2110 - 800 MHz
LSC4110 - 1.2 GHz
• Wide Operating
Temperature Range: -40°C
to +85°C
• Alternative Package Styles:
LSC2110 - 14 Pin DIL
LSC4110 - 14 Pin“Butterfly”
Applications
• Telecommunications
• Local Area and Metropolitan
Area Networks
• Point-to-Point Data
Communications
• Fiber Optic Sensors
• Cable Television
• Military Communications
and Control Systems
• Instrumentation
LSCX110 laser modules are
highly reliable fiber optic light
sources operating in the 1300
nanometer band. The internal
semiconductor lasers are
based upon InGaAsP buried
heterostructure (BH) technology
and fabricated by the Metal
Organic Vapor Phase Epitaxy
(MOVPE) process, resulting
in long lifetimes and modest
threshold currents.
LSCX110 packages include a
photodiode for monitoring the
laser output, a thermistor for
monitoring laser heatsink
temperature and a Peltier effect
thermoelectric cooler (TEC).
A heatsink mounting flange is
incorporated into the base of the
14 pin “butterfly” package and a
“bullhorn” type flange is used
on the 14 pin DIL package.
5963-5308E (1/95)
461
LSC2110
Top View
Pin Connections
LSC4110
Top View
TEC 14 TEC CATHODE (-ve SUPPLY TO COOL)
13 NOT CONNECTED
12 THERMISTOR
11 THERMISTOR
10 LASER ANODE (+ve SUPPLY) CASE GROUND
9 LASER CATHODE (-ve SUPPLY)
8 MONITOR PHOTODIODE ANODE (-ve SUPPLY)
TEC ANODE (+ve SUPPLY TO COOL) 1
NOT CONNECTED 2
NOT CONNECTED 3
RESERVED - DO NOT CONNECT 4
CASE GROUND 5
RESERVED - DO NOT CONNECT 6
MONITOR PHOTODIODE CATHODE (+ve SUPPLY) 7
14 TEC CATHODE (-ve SUPPLY TO COOL)
13 LASER ANODE (+ve SUPPLY) CASE GROUND
12 NOT CONNECTED
11 LASER CATHODE (-ve SUPPLY)
10 CASE GROUND
9 NOT CONNECTED
8 NOT CONNECTED
TEC ANODE (+ve SUPPLY TO COOL) 1
THERMISTOR 2
MONITOR PHOTODIODE ANODE (-ve SUPPLY) 3
MONITOR PHOTODIODE CATHODE (+ve SUPPLY) 4
CASE GROUND 5
NOT CONNECTED 6
NOT CONNECTED 7
TEC
462
LSCX110 Laser Diode Typical Operating Characteristics
RELATIVE POWER
1290
WAVELENGTH (nm)
1320
60
100
1300
40
1310
SPECTRAL CONTENT
80
20
0
FIBER POWER (mW)
0
FORWARD CURRENT (mA)
60
1.5
2.0
20 40
1.0
OUTPUT POWER
vs. FORWARD CURRENT
0.5
0
MONITOR DIODE PHOTOCURRENT (µA)
0
OUTPUT POWER (mW)
4.0
500
800
1.5 2.5
300
MONITOR PHOTOCURRENT
vs. OUTPUT POWER
600
100
00.5 1.0 2.0 3.0 3.5
700
400
200
FORWARD VOLTAGE (V)
0
FORWARD CURRENT (mA)
80
1.0
50
1.5
302010 40 70
0.5
60
LASER FORWARD VOLTAGE
vs. FORWARD CURRENT
0
463
5
-
1
-
0.04
-
-
1280
-
-
-
-
800
1.2
Absolute Maximum Ratings
Laser Forward Current
Laser Reverse Current
Laser Reverse Voltage
Photodiode Reverse Voltage
Photodiode Forward Current
Operating Temperature (Case)
Storage Temperature
Relative Humidity RH
Fiber Pull Strength
Mechanical Shock
Vibration
Absolute maximum limits mean that no catastrophic damage will occur if the product is subjected to these ratings for short periods, provided each
limiting parameter is in isolation and all other parameters have values within the performance specification. It should not be assumed that limiting
values of more than one parameter can be applied to the product at the same time.
mA
µA
V
V
mA
°C
°C
%RH
N
If
Ir
VIr
Vr
Ipf
C
Ts
DC
DC
DC
DC
DC
Pf = 1 mW
Mil Std 883, Method 2002,
Test Condition A
Mil Std 883, Method 2007,
Test Condition A
Performance Specifications
non-
condensing
Max.
150
100
2
10
1
+85
+85
10
-
-
-
-
-
-40
-40
0-0
-
Min.
Limits
LASER
Threshold Current
Ith Change with Temperature
Peak Optical Output
Optical Output Power
Slope Efficiency
Forward Voltage
Differential Resistance
Center Wavelength
λc Change with Temperature
Linewidth
Rise Time
Fall Time
Small Signal Frequency Response
LSC2110
LSC4110
CW, Rt = 10 kΩ, Tc = ~25°C
unless otherwise specified
Tc = 65°C to 85°C
Pf = Pf @ Ith + 25 mA
Pth = Pf @ Ith - 2 mA
dV/dl
Note 1
Tc = 65°C to 85°C, ∆T = -40°C
FWHM (2.35 σ), Note 1
10% to 90%: Ith to Pf = 1 mW
90% to 10%: Pf = 1 mW to Ith
m = 0.8
m = 0.8
Ith
∆Ith/∆T
Pf
Pth
η
Vf
Rd
λc
∆λc/∆T
∆λ
τr
τf
Bw
Bw
SymbolParameter Test Conditions Units
Note:
1. Modulated measurements also available.
Parameter Units
Symbol Conditions
Max.
25
2.5
2.5
50
0.1
1.8
10
1330
0.4
5
0.5
0.5
-
-
Min.
Test Limits
mA
%/°C
mW
µW
mW/mA
V
Ω
nm
nm/°C
nm
ns
ns
MHz
GHz
Units
464
Ic
Ih
Vc
A
A
V
1.0
1.0
2.0
-
-
-
Typ -4.4
Typ 3900
THERMISTOR
Resistance
Temperature Coefficient of Rt
ß Constant
kΩ
%dR/K
°K
80
0.08
-
-
-
800
0.8
20
±0.5
±0.5
µA
A/W
nA
dB
dB
Rt = 10 kΩ, Tc = ~25°C, CW,
Pf = 1 mW, Vr = 5 V (Note 2)
unless otherwise specified
Pf = 0 mW
Im = Im @ (Pf = 1 mW, Tc = 25°C)
∆T = -40°C, Tc = 85°C
∆T = +65°C, Tc = -40°C
MONITOR PHOTODIODE
Photocurrent
Responsivity
Dark Current
Tracking Error
Performance Specifications (cont'd.)
Max.Min.
Parameter Units
Symbol Test Conditions Test Limits
Im
R
Id
∆R
Note:
2. Monitor Photodiode will also operate under zero bias conditions.
Test Limits
Min. Max. Units
Test ConditionsParameter Symbol
Rt
∆Rt/∆T
ß
Tc = 25°C, Pf = 0 mW
unless otherwise specified
0°C to 50°C
TEC
TEC Cooling Current
TEC Heating Current
Voltage
Parameter Symbol Units
Min. Max.
Tc = 25°C, Pf = 1 mW
unless otherwise specified
∆T = -40°C, Tc = 85°C
∆T = 65°C, Tc = -40°C
∆T = -40°C to +65°C
Test Limits
Test Conditions
Fiber Pigtail: Tight jacketed, self-mode stripping, single mode fiber
Parameter
Length
Spot Size (mode radius)
Cladding Diameter
Core/Cladding Concentricity
Secondary Jacket Diameter
Effective Cut-off Wavelength
Minimum
1.0
4.5
122
-
0.8
1150
Maximum
-
5.5
128
1.0
1.0
1240
Units
m
µm
µm
µm
mm
nm
Hewlett-Packard can offer a ruggedized fiber pigtail for this product range if extreme mechanical strength is required. The pigtail
length can be customized to your specific length, with a connector, to a tolerance of
±
25 mm.
9.5 10.5
465
R
G
E
D
BFIBER PIGTAIL
A
P
TM
F
∅U
J
CKL
S
∅N
∅H
DIM. MIN. MAX.
A
B
C
D
E
F
G
∅H
J
20.68
0.90
12.55
8.51
6.10
7.62 NOM.
2.54 NOM.
0.457 NOM.
7.01
20.98
1.10
13.00
9.60
6.60
7.21
ALL DIMENSIONS IN MILLIMETERS
DIM. MIN. MAX.
K
L
M
∅N
P
R
S
T
∅U
19.05 NOM.
25.10
30.00 NOM.
–
1000
5.80
6.00 NOM.
–
3.17 NOM.
25.70
4.20
–
6.20
6.00
LSC2110 Mechanical Outline
466
P
FIBER PIGTAIL
G
∅T
C
J
DIM. MIN. MAX.
A
B
C
D
E
F
G
H
I
29.85
20.65
12.45
9.05
1.40
4.90
5.45
2.54 NOM.
0.38 NOM.
30.15
20.95
12.75
9.35
1.60
6.10
5.75
ALL DIMENSIONS IN MILLIMETERS
DIM. MIN. MAX.
J
K
L
M
N
P
R
S
∅T
0.25 NOM.
19.05 NOM.
30.00 NOM.
1000
4.05
5.25
8.85
25.85
1.90
–
4.35
5.55
9.15
26.15
2.10
A
S
B
R
F
D
I H
E
N
M
L
K
LSC4110 Mechanical Outline
467
CDRH Certification
Hewlett-Packard Ltd
Whitehouse Road
Ipswich, Suffolk IP1 5PB
England
Manufactured: ____ Serial No. ____
Model No. ____________
This product conforms to the applicable
requirements of 21 CFR 1040 at the date of
manufacture.
Laser Warning
ST® is a Registered Trademark of AT&T.
Handling Precautions
1. The LSCX110 can be damaged by current surges or overvoltage.
2. Power supply transient precautions should be taken.
3. Normal handling precautions for electrostatic sensitive devices
should be taken.
Ordering Information
LSCX110 - XX
Connector Type:
FP = FC/PC
ST = ST®
SC = SC
DN = DIN
BI = Biconic
D4 = D4
SF = Super Polish FC/PC
Package Style:
2 = 14 PIN DIL
4 = 14 PIN “Butterfly”
