474
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.
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.
5962-9396E (11/94)
475
LSC2210 Pin Connections and Block Diagram
Bottom View
LSC2210 Mechanical Outline
TEC CATHODE (–) 14
NC 13
THERMISTOR 12
THERMISTOR 11
LASER ANODE (+), GROUND 10
LASER CATHODE (–) 9
MONITOR PHOTODIODE–V SUPPLY 8
1 TEC ANODE (+)
2 NC
3 NC
4 RESERVED
5 CASE GROUND
6 RESERVED
7 MONITOR PHOTODIODE + V SUPPLY
FIBER PIGTAILBOTTOM VIEW
F
R
S
J
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
KL
C
∅U
D
E
G∅H
A
M
B
P
T
∅NFIBER PIGTAIL
DIM.
K
L
M
∅N
P
R
S
T
∅U
MIN.
19.05 NOM.
25.10
–
–
1000
5.80
6.00 NOM.
–
3.17 NOM.
MAX.
25.70
30.00
4.20
–
6.20
6.00
ALL DIMENSIONS IN MILLIMETERS
476
LSC2210 Typical Operating Characteristics
FIBER POWER (mW)
0
0
FORWARD CURRENT (mA)
100
2.0
2.5
0.5
40
1.5
1.0
20 60 80
1.5
1.0
0.5
FORWARD VOLTAGE (V)
CONTINUOUS WAVE POWER
AND FORWARD VOLTAGE
VS. FORWARD CURRENT
MONITOR PHOTOCURRENT (µA)
0
0
OUTPUT POWER (mV)
2.5
500
600
100
1.0
300
200
0.5 1.5 2.0
400
MONITOR PHOTOCURRENT
VS. OUTPUT POWER
RELATIVE POWER
1520
0
WAVELENGTH (nm)
1570
80
100
20
1540
60
40
1530 1550 1560
SPECTRAL CONTENT
REL POWER
1540
WAVELENGTH (nm)
1550
-40 dB
1545
REL POWER
-20 dB
0 dB
-40 dB
-20 dB
0 dB UNMODULATED
MODULATED
EFFECT OF MODULATION
ON SPECTRUM
477
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 Ith - 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) [3] - -30 dB
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.
478
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
Tc = 25°C, Pf = 0 mW
Parameter Symbol unless otherwise specified Min. Max. Units
Resistance Rt9.5 10.5 kΩ
Temperature Coefficient of Rt ∆Rt/∆T Typ4.4 %dR/K
β Constant β0°C to 50°C Typ3900 °K
TEC
Test Conditions
Tc = 25°C, Pf = 1 mW
Parameter Symbol unless otherwise specified Min. Max. Units
TEC Cooling Current Ic∆T = -40°C, Tc = 65°C - 1.0 A
TEC Heating Current Ih∆T = 45°C, Tc = -20°C - 1.0 A
Voltage Vc∆T = -20°C to +65°C - 2.0 V
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
±
25 mm.
Note:
1. Fiber output power change for constant monitor output current.
Test Limits
Test Limits
479
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.
ST® is a Registered Trademark of AT&T.
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.
