14 Pin DIL Uncooled Laser
Modules
Technical Data
LSC3X00
Features
• Low Cost Plastic Package
(14 Pin DIL)
• LSC3300: 100 µW (-10 dBm)
Min. Power Output
LSC3100: 1 mW (0 dBm)
Min. Power Output
• 1280 - 1330 nm Wavelength
• Hermetic Laser Module
• -40°C to +85°C Operation
Applications
• Telecommunications
• Local Area and Metropolitan
Area Networks
• Point to Point
Datacommunications
• Fiber Optic Sensors
• Cable Television
• Military Communications
and Control Systems
• Instrumentation
Description
LSC3X00 laser modules are high
reliability fiber optic light sources
operating in the 1300 nanometer
band. They are particularly well
suited for applications where low
power dissipation is required.
The internal semiconductor lasers
are based upon InGaAsP buried
heterostructure (BH) technology
and fabricated by the MetalOrganic Vapor Phase Epitaxy
(MOVPE) process, resulting in
long lifetimes and modest
threshold currents.
The LSC3X00 package includes a
photodiode for monitoring the
laser output. A longhorn type
heatsink mounting flange is
incorporated in the industry
standard 14 pin DIL package.
Two basic varieties are offered
for alternative power ranges. The
“low power” LSC3300 covers the
power range between 100 µW
and 625 µW. The “high power”
LSC3100 uses the same laser
chip, but with tighter fiber
coupling to achieve output
powers from 1 mW to 2.5 mW.
The low cost outer package is
made feasible by our unique
design of hermetic miniature
laser submodule which houses
the electro-optic devices. The
submodule concept is used as a
building block in many other
Hewlett-Packard products
including cooled 1 mW 14 pin
lasers and DFB modules.
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.
480
5963-1125E (7/94)
LSC3X00 Pin Connections and Block Diagram
Top View
FIBER PIGTAIL
NOT CONNECTED 1
NOT CONNECTED 2
NOT CONNECTED 3
NOT CONNECTED 4
CASE GROUND 5
NOT CONNECTED 6
MONITOR PHOTODIODE CATHODE (+ve SUPPLY) 7
14 NOT CONNECTED
13 NOT CONNECTED
12 NOT CONNECTED
11 NOT CONNECTED
10 LASER ANODE (+), GROUND
9 LASER CATHODE (-)
8 MONITOR PHOTODIODE ANODE (-ve SUPPLY)
LSC3X00 Mechanical Outline - Dimensions in mm
Q
F
E
L
N
B
R
C
A
M
H
G
J
P
K
DIM. MIN. MAX.
ALL DIMENSIONS IN MILLIMETERS
12.6
A
19.05 NOM.
B
25.3
C
6.4
D
E
F
G
H
–
21.33
7.01
9.40
12.8
25.5
6.8
6.0
21.53
7.21
9.60
DIM. MIN. MAX.
J
2.52 NOM.
K
25.0 NOM.
L
M
N
P
Q
7.62 NOM.
R
5.5
–
800
1.5
0.99
D
5.9
4.2
–
1.8
1.05
481
LSC3X00 Laser Diode Typical Operating Characteristics
LASER FORWARD VOLTAGE
vs. FORWARD CURRENT
1.2
1.0
0.5
FORWARD VOLTAGE (V)
0
0
1
10
0
10
302010 40 70
FORWARD CURRENT (mA)
THRESHOLD CURRENT
vs. TEMPERATURE
DIFFERENTIAL RESISTANCE
vs. FORWARD CURRENT
30
20
dV/dl (Ω)
10
1320
1310
1300
1290
0
0
FORWARD CURRENT (mA)
PEAK WAVELENGTH
vs. TEMPERATURE
302010 40
50
60
60
50
80
482
-1
10
NORMALIZED THRESHOLD CURRENT
-30
TEMPERATURE (°C)
503010-10
WAVELENGTH (nm)
1285
70
-20
TEMPERATURE (°C)
604020080
LSC3X00 Laser Diode Typical Operating Characteristics
MONITOR PHOTOCURRENT
700
600
500
400
300
200
100
MONITOR DIODE PHOTOCURRENT (µA)
0
vs. OUTPUT POWER
100 200 300
LSC3300 FIBER POWER (µW)
LSC3100 FIBER POWER (mW)
100
80
400
2 mW1 mW
SPECTRAL CONTENT
CONTINUOUS WAVE POWER
vs. FORWARD CURRENT (25 °C)
400
300
200
100
LSC3300 FIBER POWER (µW)
0
0
20 50
FORWARD CURRENT (mA)
2 mW
1 mW
LSC3100 FIBER POWER (mW)
60403010 70
60
40
RELATIVE POWER
20
0
1290
1300
WAVELENGTH (nm)
1310
1320
483
Absolute Maximum Ratings
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.
Limits
Parameter Symbol Conditions Min. Max. Units
Laser Forward Current If DC - 150 mA
Laser Reverse Current Ir DC - 100 µA
Laser Reverse Voltage Vlr DC - 2 V
Photodiode Reverse Voltage Vr DC - 10 V
Photodiode Forward Current Ipf DC - 1 mA
Operating Temperature Tc Pf min. -40 +85 °C
Storage Temperature Ts -40 +85 °C
Relative Humidity RH 0.0 non- %RH
condensing
Fiber Pull Strength - 10 N
Mechanical Shock Mil Std 883D, Method 2002,
Condition B
Vibration Mil Std 883D, Method 2007,
Condition A
Performance Specifications
LSC3300 LSC3100
Parameter Symbol Conditions Min. Max. Min. Max. Units
LASER CW, Tc = 25°C, Pf = Pf min.
unless otherwise stated
Threshold Current Ith 5 35 5 35 mA
Peak Optical Pf 100 - 1000 - µW
Output Power
Optical Output Pth Pth = Pf @ Ith -2 mA - 10 - 50 µW
Power
Slope Efficiency η 4 16 40 100 µW/mA
Forward Voltage Vf - 1.8 - 1.8 V
Differential Rd dV/dI - 10 - 10 Ω
Resistance
Centre Wavelength λc Note 1 1280 1330 1280 1330 nm
Ic Change with ∆λ/∆T Tc = -40°C to 85°C - 0.5 - 0.5 nm/°C
Temperature
Linewidth ∆λ FWHM (2.35s) - 5 - 5 nm
Rise Time τr 10% to 90%: Ith to Pf = Pf min. - 0.5 - 0.5 ns
Fall Time τf 90% to 10%: Pf = Pf min. to Ith - 0.5 - 0.5 ns
Small Signal Bw Pf = Pf min., ± 3 dB 1.0 - 1.0 - GHz
Freq. Response
Note:
1. Modulated measurement available.
If the specific performance you require is not met by the above parameters, please contact Hewlett-Packard as the submodule
designs allows customization of performance to meet your needs.
484
Performance Specifications (cont’d.)
LSC3300 LSC3100
Parameter Symbol Test Conditions Min. Max. Min. Max. Units
MONITOR Tc = 25°C, Vr = -5 V, (Note 2),
PHOTODIODE CW, Pf = Pf min.
unless otherwise stated
Photocurrent Im 25 800 50 800 µA
Responsivity R 0.25 8.0 0.05 0.8 A/W
Dark Current Id If = 0 mA - 20 - 20 nA
Tracking Error ∆R Im = Im @ (Pf = Pf min.,
Tc = 25°C)
Tc = -40°C to +85°C -1.5 +1.5 -2.0 +1.5 dB
Note:
2. Photodiode will also operate under zero bias conditions.
Fiber Pigtail: Tight jacketed, self-mode stripping, single mode fiber
Parameter Minimum Maximum Units
Length 1.0 - m
Spot Size (Mode Radius) 4.5 5.5 µm
Cladding Diameter 122 128 µm
Core/Cladding Concentricity - 1.0 µm
Secondary Jacket Diameter 0.8 1.0 mm
Effective Cutoff Wavelength 1150 1240 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.
485
Ordering Information
LSC3X00 - XX
Connectors:
FP = FC/PC Polish
ST = ST
®
BI = Biconic
SA = SMA
SC = SC
DN = DIN
SF = Super Polish FC/PC
Power Range:
1 = 1 mW minimum
3 = 100 µW minimum
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.
486
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