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2.5 mW 14 Pin DIL Cooled Laser Module Technical Data
LSC2110-622
Features
* 2.5 Milliwatt Peak Optical Power Output * Center Wavelength between 1294 nm and 1329 nm * Narrow Linewidth: <1.7 nm * Modulation Bandwidth: >1 Ghz * Wide Operating Temperature Range: -40C to +85C * Industry Standard Hermetic 14 Pin Dual-In-Line Package
Description
LSC2110-622 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. LSC2110-622 package includes a photodiode for monitoring the laser output, a thermistor for monitoring the laser submodule temperature and a Peltier effect thermoelectric cooler (TEC). A heatsink mounting flange is incorporated into the industry standard 14 pin package. The LSC2110-622 has been specifically designed to meet the requirements of STM4.1 and SONET OC12 LR1 applications.
Applications
* 622 Mbit/s SONET/SDH * Local Area and Metropolitan Area Networks * Point-to-Point Data Communications * 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.
468
5962-9398E (1/95)
Pin Connections
Top View
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
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)
Mechanical Outline
S U B A
FIBER PIGTAIL N
F
C
KL T M
J
P
D E G H
R
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. 25.70 25.10 30.00 NOM. 4.20 - - 1000 6.20 5.80 6.00 NOM. - 6.00 3.17 NOM.
ALL DIMENSIONS IN MILLIMETERS
469
LSC2110-622 Typical Operating Characteristics
LASER FORWARD VOLTAGE vs. FORWARD CURRENT 1.2
FORWARD VOLTAGE (V)
100
SPECTRAL CONTENT
80
1.0
RELATIVE POWER
60
40
0.5
20
0
10
20
30
40
50
60
70
80
0
1300
1305
1310
1315
FORWARD CURRENT (mA)
WAVELENGTH (nm)
MONITOR DIODE PHOTOCURRENT (A)
2.5
OUTPUT POWER vs. FORWARD CURRENT
800 700 600 500 400 300 200 100 0 0
MONITOR PHOTOCURRENT vs. OUTPUT POWER
OUTPUT POWER (mW)
2.0
1.5
1.0
0.5
0
0
20
40
60
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT POWER (mW)
FORWARD CURRENT (mA)
470
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.
Parameter Laser Forward Current Laser Reverse Current Laser Reverse Voltage Photodiode Reverse Voltage Photodiode Forward Current Operating Temperature Storage Temperature Relative Humidity Fiber Pull Strength Mechanical Shock Vibration
Symbol If Ir Vlr Vr Ipf Tc Ts RH
Conditions DC DC DC DC DC Pf min.
Min. -40 -40 0.0 -
Limits Max. 150 100 2 10 1 +85 +85 noncondensing 10
Units mA A V V mA C C %RH N
Mil Std 883, Method 2002, Condition A Mil Std 883, Method 2007, Condition A
Performance Specification
Parameter LASER Symbol Test Conditions Tc = -40C to +85C, T = +65C (heating) T = -40C (cooling), CW, Pf = 2.5 mW unless otherwise stated Min. Max. Units
Threshold Current Peak Optical Output Power Optical Output Power Slope Efficiency Forward Voltage Differential Resistance Centre Wavelength c Change with Temperature Spectral Width Rise Time Fall Time Small Signal Freq. Response
Ith Pf Pf Pth Vf Rd c c/T r f Bw
Pth = Pf @ Ith -2 mA Tc = 25C, Rt = 10 k dV/dI Mod @ 622 Mbit/s, 50% duty cycle, ORL 20 dB From Tc = 65C to 85C, T = -40C Modulated as for c, 1 x , RMS 10% to 90%: Ith to Pf = 2.5 mW 90% to 10%: Pf = 2.5 mW to Ith 3 dB
5 2.5 4 0.05 1294 1.0
25 50 0.12 1.8 10 1329 0.5 1.7 0.4 0.4 -
mA mW dBm W mW/mA V nm nm/C nm ns ns GHz
471
Performance Specifications (cont'd.)
Parameter MONITOR PHOTODIODE Photocurrent Responsivity Dark Current Tracking Error Symbol Test Conditions Tc = -40C to +85C, T = +65C (heating) T = -40C (cooling), CW, Pf = 2.5 mW Vr = 5 V (Note 1), unless otherwise specified Ratings Min. Max. Units
Im R Id R
Pf = 0 mW, Tc = ~25C, Rt = 10 k Im = Im @ (Pf = 2.5 mW, Tc = 25C)
0.1 0.04 -
2.0 0.8 20 0.5
mA A/W nA dB
Note: 1. Monitor Photodiode will also operate under zero bias conditions.
Parameter THERMISTOR Resistance Temperature Coefficient of Rt Constant
Symbol
Test Conditions Tc = 25C, unless otherwise specified
Ratings Min. Max.
Units
Rt Rt/T
0C to 50C
9.5 10.5 Typ -4.4 Typ 3900
k %dR/C K
Parameter TEC TEC Cooling Current TEC Heating Current Voltage
Symbol
Ic Ih Vc
Test Conditions Pf = 2.5 mW, unless otherwise specified T = -40C, Tc = 85C T = 65C, Tc = -40C T = -40C to 65C
Ratings Min. Max.
Units
-
1.0 1.0 2.0
A A V
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 Cutoff 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
472
Ordering Information
LSC2110 - 622 - XX Connector Type: FP = FC/PC ST = ST(R) SC = SC DN = DIN BI = Biconic SA = SMA SF = Super Polish FC/PC
Handling Precautions
1. The LSC2110-622 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 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(R) is a Registered Trademark of AT&T.
473

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