155/622 Mb/s SMQW Pigtailed Laser Modules Technical Data LST2525 - 200 µW Coaxial Laser LST2825 - 1 mW Coaxial Laser Features Description • Strained Multi Quantum Well (SMQW) Fabry Perot laser chip • Low threshold and operating current • Wide Operating Temperature Range • Optical Power up to 1 mW • Modulation Capability up to 622 Mb/s Products in the SMQW pigtailed laser module family consist of a coaxial style package operating in the 1300 nm wavelength region and coupling light to single mode fiber. They are designed for use in short, medium and long distance networks with bit rates up to 622 Mb/s. Applications • • • • • • Telecommunications Fiber in the loop Inter/lntra Office SONET/SDH Datacommunications Switches The device features a high reliability SMQW Fabry Perot laser diode and rear facet monitor photodiode. These are electrically connected to four pins in an industry- standard configuration. Environmental performance is designed to be compatible with the requirements of Bellcore’s TA-NWT-000983 document. If the specific arrangement or performance you require is not listed, please contact your local representative as our highly flexible design and manufacturing processes allow both physical and electro-optical customization to meet your needs. Laser Safety Warning This device is a Class IIIa (3a) 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. 2 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause catastrophic damage to the device. Limits apply to each parameter in isolation, all other parameters having values within the recommended operating conditions. It should not be assumed that limiting values of more than one parameter can be applied to the product at the same time. Exposure to the absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Symbol Laser Forward Current Laser Reverse Voltage Photodiode Reverse Voltage Photodiode Forward Current Operating Temperature Storage Temperature Relative Humidity Fiber Pull Strength Mechanical Shock Vibration If Vlr Vr Ipf Tc Ts RH Limits Min. Max. Test Condition DC DC DC DC Temperature measured at case -40 -40 120 2 20 1 +85 +85 noncondensing Three times; 10 sec. MIL-STD-883E, Method 2002, Condition A MIL-STD-883E, Method 2007, Condition A 10 500 20 Unit mA V V mA °C °C %RH N G G Performance Specifications Parameter Symbol LASER Rated optical power Po Threshold current Threshold current Coupled Power in "Off" state Slope efficiency Drive current above Ith, for Im = Im (Po, +25°C) Ith Ith Pth Forward voltage - LST Forward voltage - HFCT Vf Centre wavelength l Wavelength/temperature coefficient Spectral width Rise and fall time h Id Test Condition CW, Tc = -40°C to +85°C, Po as noted below unless otherwise stated Tc = ranges specified above, CW Tc = +25°C 0.2 LST2825 Min. Max. 1 Unit mW 3.5 1.5 10 30 12 3.5 1.5 10 30 12 mA mA µW 10 12.5 16 20 50 10 100 20 µW/mA mA Tc = -40°C to +85°C 10 7.5 Tc = +25°C Tc = -40°C to +85°C 1286 1260 33.3 1.6 3.0 1336 1360 0.4 33.3 1.6 3.0 1336 1360 0.4 mA V V nm nm nm/°C 2.5 380 nm ps If = Ith - 2 mA Tc = +25°C Tc = +25°C Dl/DT s t LST2525 Min. Max. One sigma, RMS 10 - 90%, Ith to Po 2.5 380 1286 1260 3 Performance Specifications (Continued) Parameter Symbol MONITOR PHOTODIODE Photocurrent Dark current Capacitance - LST Capacitance - HFCT Tracking Error Rise and fall time Test Condition LST2525 Min. Max. LST2825 Min. Max. Unit Tc = +25°C Vr = 5 V, Po = Rated Power Im Id C DR tr 200 Po = 0 µW 1 MHz 1000 20 10 20 Im = Im (Po, +25°C) Tc + -40°C to +85°C 10 - 90%, Ith to Po 200 ±1 2 1000 20 10 20 µA nA pF pF ±1 2 dB ns Fiber Pigtail Parameter Fiber Pigtail Length Spot Size (Mode Radius) Cladding Diameter Core/Cladding Concentricity Secondary Jacket Diameter Effective Cutoff Wavelength Minimum 1000 4.5 122 0.8 1150 Maximum Unit mm µm µm µm mm nm 5.5 128 1 1 1240 Reliability Parameter Condition Minimum Median Life 50% inc. in total drive current, Tc = +25°C 2 x 10^5 Maximum Unit hours Other documentation SMQW Laser Diode Reliability Datasheet Publication number 5965-1293E LST252X/LST282X Qualification Report Publication number 5965-8894E 4 Example of LST2x25 - All dimensions in mm. A H K I M G B C O F E P - Pin diameter N Q J D L R Dimension Min. Typ. Max. Dimension A B C D E F 7.4 17 G H I J K L 11.8 12.2 3.7 2.4 12.5 3 2 LST2x25 PHOTODIODE 1 LASER CASE 4 2.6 12.9 Pin 1 2 3 4 Min. Typ. Max. 12 20 5.3 2 2.1 2.3 1000 LST2x25 Function Monitor Anode (-ve) Monitor Cathode (+ve) Laser Cathode (-ve) Laser Anode (+ve) Dimension Min. Typ. Max. M N O P Q R 0.9 5.3 2 0.4 0.5 0.5 1.25 5 Ordering Information Coaxial Package LST2x25-x-xx Connector Type: FP = FC/PC SC = SC ST = ST® Flange: T = Universal flange Power: 5 = 200 µW 8 = 1 mW Available options: LST2525-T-FP LST2825-T-FP LST2525-T-SC LST2825-T-SC LST2525-T-ST LST2825-T-ST ST® is a Registered Trademark of AT&T ,19,6,%/(/$6(55$',$7,21 '212767$5(,172%($0259,(: ',5(&7/<:,7+237,&$/,167580(176 &/$66$/$6(5352'8&7 3HDN3RZHUP: :DYHOHQJWKQP ,(& Laser Warning DANGER Invisible LASER Radiation Avoid direct exposure to beam Peak power 16 mW Wavelength 1300 nm Class III a LASER product CDRH Certification Agilent Technologies Inc., Whitehouse Road Ipswich, Suffolk IP1 5PB England Manufactured: Serial No: Model No: If the drive current is limited to less than 90 mA then the product is Class 1 (IEC825-1) This product conforms to the applicable requirements of 21 CFR 1040 at the date of manufacture www.semiconductor.agilent.com Data subject to change. Copyright © 2000 Agilent Technologies, Inc. Obsoletes: 5968-4809E 5980-1288E (05/00)