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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: -20C to +65C * Industry Standard Hermetic 14 PIN Dual-In-Line Package
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.
Applications
Telecommunications Fiber Optic Sensors Cable Television Military Communications and Control Systems * Instrumentation * * * *
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)
LSC2210 Pin Connections and Block Diagram
Bottom View
BOTTOM VIEW FIBER PIGTAIL
TEC CATHODE (-) 14 NC 13 THERMISTOR 12 THERMISTOR 11 LASER ANODE (+), GROUND 10 LASER CATHODE (-) MONITOR PHOTODIODE-V SUPPLY 9 8
1 TEC ANODE (+) 2 NC 3 NC 4 RESERVED 5 CASE GROUND 6 RESERVED 7 MONITOR PHOTODIODE + V SUPPLY
LSC2210 Mechanical Outline
S U B A
N F C K L
FIBER PIGTAIL
T M J P
DIM. A B C D E F G H J
MIN. MAX. 20.98 20.68 1.10 0.90 13.00 12.55 9.60 8.51 6.60 6.10 7.62 NOM. 2.54 NOM. 0.457 NOM. 7.21 7.01
DIM. K L M N P R S T U
MIN. MAX. 19.05 NOM. 25.10 25.70 30.00 - - 4.20 1000 - 5.80 6.20 6.00 NOM. - 6.00 3.17 NOM.
D R E
G
H
ALL DIMENSIONS IN MILLIMETERS
475
LSC2210 Typical Operating Characteristics
2.5
CONTINUOUS WAVE POWER AND FORWARD VOLTAGE VS. FORWARD CURRENT
MONITOR PHOTOCURRENT (A)
600 500 400 300 200 100 0
MONITOR PHOTOCURRENT VS. OUTPUT POWER
FIBER POWER (mW)
1.5
1.5 1.0 1.0 0.5
0.5
0
FORWARD VOLTAGE (V)
2.0
0
20
40
60
80
100
0
0.5
1.0
1.5
2.0
2.5
FORWARD CURRENT (mA)
OUTPUT POWER (mV)
100
REL POWER
SPECTRAL CONTENT
0 dB -20 dB -40 dB
EFFECT OF MODULATION ON SPECTRUM UNMODULATED
80
RELATIVE POWER
60
REL POWER
40
0 dB MODULATED -20 dB -40 dB 1540 1545 WAVELENGTH (nm) 1550
20
0 1520
1530
1540
1550
1560
1570
WAVELENGTH (nm)
476
Absolute Maximum Ratings at 25C
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 Laser Forward Current Laser Reverse Current Laser Reverse Voltage Photodiode Forward Current Photodiode Reverse Voltage (Vr) Fiber Pull Strength Operating Temperature (Case) Storage Temperature Mechanical Shock Vibration
Minimum Maximum 150 10 2.0 1 -10 10 -20 +65 -40 +85 Mil Std 883, Method 2002, Test Condition B Mil Std 883, Method 2007, Test Condition A
Units mA A V mA V N C C
Performance Specification - Laser [1]
Parameter Threshold Current (Ith) Fiber Output Power (Pf) at Ith +40 mA Rise Time: 10% to 90%; Ith to Ith +25 mA Fall Time: 90% to 10%; Ith +25 mA to Ith Peak Wavelength Spectral Width (-20 dB, >20 dB ORL) [2], Modulated [3] Temperature Dependence of Peak Wavelength Sidemodes (CW) Sidemodes (Modulated) [3]
Notes: 1. At 25C 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.
Minimum 1 0 1520 -
Maximum 60 0.4 0.4 1565 0.8 0.10 -30 -30
Units mA mW dBm ns ns nm nm nm/C dB dB
477
Performance Specification - Monitor Photodiode
Parameter Photocurrent (Im) at 1 mW Responsivity (lm/Pf) at Vr = -5 V Temperature Dependence of Responsivity [1] (from -20C to 65C, with Respect to 25C) Dark Current (Vr = -5 V) at 25C at 65C Minimum 0.05 0.05 Maximum 0.5 15 1.0 Units mA A/W dB nA A
Thermistor
Test Conditions Tc = 25C, Pf = 0 mW unless otherwise specified Test Limits Min. Max. 9.5 10.5 Typ4.4 Typ3900 Units k %dR/K K
Parameter Resistance Temperature Coefficient of Rt Constant
Symbol Rt Rt/T
0C to 50C
TEC
Test Conditions Tc = 25C, Pf = 1 mW unless otherwise specified T = -40C, Tc = 65C T = 45C, Tc = -20C T = -20C to +65C Test Limits Min. Max. 1.0 1.0 2.0 Units A A V
Parameter TEC Cooling Current TEC Heating Current Voltage
Symbol Ic Ih Vc
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 m m m 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.
Note: 1. Fiber output power change for constant monitor output current.
478
Ordering Information
LSC2210-XX Connector Type: FP=FC/PC Polish ST=ST(R) 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
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.
Laser Warning
ST(R) is a Registered Trademark of AT&T.
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