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PRODUCT INFORMATION 840nm 2B455 VCSEL Laser Diode Datacom This Vertical Cavity SurfaceEmitting Laser is designed for Fibre Channel, Gigabit Ethernet, ATM and general applications. It incorporates a photodiode to monitor the optical power and allow for feedback control. Optical and Electrical Characteristics PARAMETER SYMBOL MIN. TYP . MAX. UNIT (25 C Case Temperature) TEST CONDITION Fiber-Coupled Power Optical Power Slope Efficiency (dPo/dIF) Pfiber Po 1.3 0.9 1.7 200 15 3.0 mW mW IF =12mA IF =12mA (Note 1) mW/A IF =12mA deg GHz 860 1 2.2 6 nm nm V mA A 30 nA IF =12mA, VR>1V VR=5V Full Width at 1/e2 IF =12mA IF =12mA IF =12mA IF =12mA Beam Divergence Bandwidth (3dBel ) fc p 2 830 840 0.5 Peak Wavelength Spectral Width (FWHM) Forward Voltage (Fig.5) Threshold Current Monitor Current Monitor Dark Current Relative Intensity Noise VF Ith Im Id RIN 20 1.9 3.5 30 -130 dB/Hz IF =12mA, f=1 GHz Note 1: Fiber: 50/125 Graded Index, NA=0.2 or 62.5/125 Graded Index, NA=0.275. An external glass ball lens with 2 mm diameter is required. O4.7 O2.55 Absolute Maximum Ratings PARAMETER SYMBOL LIMIT 3.575 Storage Temperature Operating Temperature (derating: Fig.4) 14 Tstg Top Ptot IF IFRM VR Tsld -55 to +125 C 0 to +70 C 35 mW 15 mA 25 mA 1.5 V 260 C Electrical Power Dissipation (derating: Fig.4) 0.4 VCSEL Cathode MONITOR Anode Continuous Forward Current (f Peak Forward Current (duty cycle All dimensions in mm 10 kHz) 50%, f 1 MHz) VCSEL Anode MONITOR Cathode VCSEL Reverse Voltage Soldering Temperature (2mm from the case for 10 sec) 2.5 5.47 CASE NOT CONNECTED BOTTOM VIEW Thermal Characteristics PARAMETER SYMBOL MIN. TYP. MAX. UNIT TO-46 Package With Flat Window Thermal Resistance - Infinite Heat Sink WARNING: Laser Radiation, avoid exposure to beam. Class 3B laser product, potential eye hazard. Warning labels in each box. Rthjc Rthja d /dTj P Ith 500 800 0.06 0.7 0.6 C/W C/W nm/ C dB mA Thermal Resistance - No Heat Sink Temp. Coefficient -W avelength Optical Power - Variation 0 to 70 C 13590.11 1999-04-01 Threshold Current - Variation 0 to 70 C Europe: Tel (46) 8 58 02 45 00 Fax (46) 8 58 02 01 10 Tel (44) 1291 436180 Fax (44) 1291 436771 America: Tel 1-800-96MITEL Fax (613) 592-6909 Asia: Tel (65) 293 5312 Fax (65) 293 8527 VCSEL Laser Diode 2B455 840nm % 120 Po vs T FIGURE 1 RELATIVE THRESHOLD CURRENT % 120 Ith vs T FIGURE 2 % 100 FIGURE 3 Po vs If 100 100 80 RELATIVE OPTICAL POWER 80 80 RELATIVE OPTICAL POWER 0 20 40 60 80 100 C 60 60 60 40 40 40 20 20 0 20 40 60 80 100 C 20 0 0 4 8 12 16 20 mA OPERATING TEMPERATURE OPERATING TEMPERATURE FORWARD CURRENT mA 20 If vs Vf MAX. ELECTRICAL POWER DISSIPATION mW 50 FIGURE 5 Pel vs T 40 INFINITE HEAT SINK FORWARD CURRENT 30 10 20 NO HEAT SINK 10 0 0 1 2 3V 0 0 20 40 60 80 100 C FORWARD VOLTAGE OPERATING TEMPERATURE % 100 FIGURE 4 Po vs U Functional Schematic VCSEL CATHODE COMMON WITH MONITOR ANODE RELATIVE OPTICAL POWER 50 VCSEL MONITOR VCSEL ANODE MONITOR CATHODE 0 -15 -10 -5 0 +5 +10 +15 EMISSION ANGLE FUNCTIONAL SCHEMATIC http://www.mitelsemi.com World Headquarters - Canada Tel: +1 (613) 592 2122 Fax: +1 (613) 592 6909 North America Tel: +1 (770) 486 0194 Fax: +1 (770) 631 8213 Asia/Pacific Tel: +65 333 6193 Fax: +65 333 6192 Europe, Middle East, and Africa (EMEA) Tel: +44 (0) 1793 518528 Fax: +44 (0) 1793 518581 Information relating to products and services furnished herein by Mitel Corporation or its subsidiaries (collectively "Mitel") is believed to be reliable. However, Mitel assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by Mitel or licensed from third parties by Mitel, whatsoever. Purchasers of products are also hereby notified that the use of product in certain ways or in combination with Mitel, or non-Mitel furnished goods or services may infringe patents or other intellectual property rights owned by Mitel. This publication is issued to provide information only and (unless agreed by Mitel in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Mitel without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. All products and materials are sold and services provided subject to Mitel's conditions of sale which are available on request. M Mitel (design) and ST-BUS are registered trademarks of MITEL Corporation Mitel Semiconductor is an ISO 9001 Registered Company Copyright 1999 MITEL Corporation All Rights Reserved Printed in CANADA TECHNICAL DOCUMENTATION - NOT FOR RESALE |
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