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14 PIN DFB Laser Module
with Cooler
Technical Data
LSC2210
Features
• >1 Milliwatt Optical Output
• Center Wavelength between
1520 nm and 1565 nm
• Modulation Capability up to
1 Gbit/s
• Wide Operating
Temperature Range:
-20°C to +65°C
• Industry Standard Hermetic
14 PIN Dual-In-Line Package
Applications
• Telecommunications
• Fiber Optic Sensors
• Cable Television
• Military Communications
and Control Systems
• Instrumentation
Description
LSC2210 laser modules are
highly reliable fiber optic light
sources operating in the 1550
nanometer band. The internal
DFB lasers are based upon
InGaAsP ridge waveguide
technology and fabricated by the
Metal Organic Vapor Phase
Epitaxy (MOVPE) process,
resulting in long lifetimes and
modest threshold currents.
The LSC2210 package includes 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 industry
standard 14 PIN package.
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.
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5962-9396E (11/94)
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LSC2210 Pin Connections and Block Diagram
Bottom View
FIBER PIGTAILBOTTOM VIEW
TEC CATHODE (–) 14
NC 13
THERMISTOR 12
THERMISTOR 11
LASER ANODE (+), GROUND 10
LASER CATHODE (–) 9
MONITOR PHOTODIODE–V SUPPLY 8
LSC2210 Mechanical Outline
S
F
∅U
C
L
K
1 TEC ANODE (+)
2 NC
3 NC
4 RESERVED
5 CASE GROUND
6 RESERVED
7 MONITOR PHOTODIODE + V SUPPLY
B
A
∅N
FIBER PIGTAIL
J
DIM. MIN. MAX.
A
B
C
D
E
7.62 NOM.
F
2.54 NOM.
G
0.457 NOM.
∅H
J
ALL DIMENSIONS IN MILLIMETERS
20.68
0.90
12.55
8.51
6.10
7.01
20.98
13.00
1.10
9.60
6.60
7.21
DIM.
K
19.05 NOM.
L
M
∅N
P
R
S
6.00 NOM.
T
∅U
3.17 NOM.
MIN.
25.10
–
–
1000
5.80
–
MAX.
25.70
30.00
4.20
–
6.20
6.00
T
M
P
D
R
E
G ∅H
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LSC2210 Typical Operating Characteristics
CONTINUOUS WAVE POWER
AND FORWARD VOLTAGE
VS. FORWARD CURRENT
2.5
2.0
1.5
1.0
FIBER POWER (mW)
0.5
0
20 60 80
0
FORWARD CURRENT (mA)
100
80
60
SPECTRAL CONTENT
MONITOR PHOTOCURRENT
600
500
1.5
1.0
0.5
FORWARD VOLTAGE (V)
40
100
400
300
200
100
MONITOR PHOTOCURRENT (µA)
0
0 dB
-20 dB
-40 dB
REL POWER
VS. OUTPUT POWER
1.0
0.5 1.5 2.0
0
OUTPUT POWER (mV)
EFFECT OF MODULATION
ON SPECTRUM
UNMODULATED
2.5
40
RELATIVE POWER
20
0
1530 1550 1560
1520
WAVELENGTH (nm)
1540
1570
0 dB
-20 dB
-40 dB
REL POWER
1540
MODULATED
1545
WAVELENGTH (nm)
1550
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Absolute Maximum Ratings at 25°C
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.
Parameter Minimum Maximum Units
Laser Forward Current - 150 mA
Laser Reverse Current - 10 µA
Laser Reverse Voltage - 2.0 V
Photodiode Forward Current - 1 mA
Photodiode Reverse Voltage (Vr) - -10 V
Fiber Pull Strength - 10 N
Operating Temperature (Case) -20 +65 °C
Storage Temperature -40 +85 °C
Mechanical Shock Mil Std 883, Method 2002, Test Condition B
Vibration Mil Std 883, Method 2007, Test Condition A
Performance Specification - Laser
[1]
Parameter Minimum Maximum Units
Threshold Current (Ith)-60mA
Fiber Output Power (Pf)1-mW
at Ith +40 mA 0 - dBm
Rise Time: 10% to 90%; Ith to Ith +25 mA - 0.4 ns
Fall Time: 90% to 10%; Ith +25 mA to I
th
- 0.4 ns
Peak Wavelength 1520 1565 nm
Spectral Width (-20 dB, >20 dB ORL)
[2]
, Modulated
[3]
- 0.8 nm
Temperature Dependence of Peak Wavelength - 0.10 nm/°C
Sidemodes (CW) - -30 dB
Sidemodes (Modulated)
Notes:
1. At 25°C and Pf = 1 mW unless otherwise specified.
2. As measured using optical spectrum analysis.
3. Measured at 565 Mbit/s, Ith -2 mA = “0” level. Ith +40 mA = “1” level.
[3]
- -30 dB
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Performance Specification - Monitor Photodiode
Parameter Minimum Maximum Units
Photocurrent (Im) at 1 mW 0.05 - mA
Responsivity (∆lm/∆Pf) at Vr = -5 V 0.05 - µA/µW
Temperature Dependence of Responsivity
[1]
(from -20°C to 65°C, with Respect to 25°C) - ± 0.5 dB
Dark Current (Vr = -5 V) at 25°C-15nA
at 65°C - 1.0 µA
Thermistor
Test Conditions
T
= 25°C, P
c
= 0 mW
f
Parameter Symbol unless otherwise specified Min. Max. Units
Resistance R
t
Temperature Coefficient of Rt ∆Rt/∆T Typ4.4 %dR/K
β Constant β 0°C to 50°C Typ3900 °K
Test Limits
9.5 10.5 kΩ
TEC
Parameter Symbol unless otherwise specified Min. Max. Units
TEC Cooling Current I
TEC Heating Current I
Voltage V
Test Conditions
T
= 25°C, P
c
c
h
c
∆T = -40°C, Tc = 65°C - 1.0 A
∆T = 45°C, Tc = -20°C - 1.0 A
∆T = -20°C to +65°C - 2.0 V
= 1 mW
f
Test Limits
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 Cut-off 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
Note:
1. Fiber output power change for constant monitor output current.
478
±
25 mm.
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Ordering Information
LSC2210-XX
Connector Type:
FP=FC/PC Polish
ST=ST
®
Model Name:
LSC2210
Handling Precautions
1. The LSC2210 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.
CDRH Certification Laser Warning
Hewlett-Packard Ltd
Whitehouse Road
Ipswich, Suffolk IP1 5PE
England
Manufactured________ Serial No._________
Model No. __________________
This product conforms to the applicable requirements
of 21 CFR 1040 at the date of manufacture.
ST® is a Registered Trademark of AT&T.
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