Data Sheet 4 - 155 Mb/s Single-Mode OSC Laser, 1510 nm LC151B Specifically designed for use as a low speed out of band optical service channel for optical amplifiers. The laser is available in a low-inductance 14-pin butterfly package with single-mode connectorized fiber-optic pigtail with a rated peak output power of 2 mW. At 1510 nm, the LC151B-20 does not interfere with WDM traffic and operates outside the normal EDFA gain region. The high reliability buried hetero-structure DFB laser chip ensures the reliability of the LC151B-20 over the entire range of recommended operating conditions. Features: • Wavelength 1510 nm • Designed to operate at 4 Mb/s - 155 Mb/s • Low threshold, high reliability BHet laser chip • Hermetically sealed 14 pin high speed butterfly package • High output power 2 mW minimum CW • Internal InGaAs monitor photodiode • Available with several optical connector options • RoHS compliant Applications: • Optical Service Channel (OSC) applications in DWDM transmission systems using optical amplifiers. 1 Data Sheet Absolute Maximum Ratings Parameter Conditions Min Max Unit Operating temperature -40 +70 °C Storage temperature -40 +75 °C 100 mA 2 V -10 V Laser forward current above Ith Laser reverse voltage Monitor diode bias Fibre bend radius 30 mm Tcase = 25°C unless otherwise stated. Parameters Parameter Condition Min Max Unit 25 35 °C SOL 5 30 mA 50% duty 1.0 Submount temperature Threshold current (Ith) Rated mean output power Forward voltage 2 mW peak Modulation current 2 mW peak Mean wavelength Monitor current Typ mW 2 V 22 67 mA 10 Mb/s 1503 1518 nm 1 mW output 65 695 µA 50 nA 800 mA 2 V Monitor dark current 5 Heatpump current 70°C case/25°C submount Heatpump voltage 70°C case/25°C submount Bandwidth 1.3 200 Sidemode suppression ratio Spectral width Rated ouput power -35 dB @ -20 dB 0.4 nm Kink To 120% peak -20 20 % Slope SAT To 120% peak -35 35 % Conditions: Monitor bias -5V. Connections 2 MHz Pin # Function Pin # Function 1 Thermistor 14 No connection 2 Thermistor 13 Ground 3 LD cathode 12 LD anode 4 Monitor anode 11 Ground 5 Monitor cathode 10 No connection 6 TEC (+) 9 Ground 7 TEC (-) 8 Ground Data Sheet Package Outline Drawing and Dimensions Tolerances ± 0.25 mm Finish: Gold plate Figure 3: Dimensions diagram. Instructions for Use Pin 1 and Pin 2 Thermistor The thermistor is used in a control loop in conjunction with the thermo-electric cooler to maintain the laser submount temperature at the required value. Operating current should be less than 100 µA to prevent selfheating errors. Pin 3 Laser modulation (-) and bias The data input (modulation) and bias are both applied via this pin which has a nominal 25 Ohm load impedance. Pin 4 Monitor anode, Pin 5 Monitor cathode The back facet monitor diode provides a mean power reference for the laser and is normally operated with a 5 V reverse bias. Pin 6 TEC (+), Pin 7 TEC (-) Applying a positive voltage on pin 6 with respect to pin 7 3 will cause the internal submount to be cooled relative to the case temperature. Reversing the polarity will raise the submount temperature relative to the case. Care should be taken to avoid overheating the submount when driving the TEC in this manner. The TEC supply should be capable of delivering up to 1.2 A at 2.5 V. Pin 8, 9, 11, 13 Case ground. These pins must be grounded in all applications. Pin 10, 14 N/C These pins are not connected. They should be grounded if possible. Pin 12 Laser (+) This pin provides the return path for the laser modulation and bias circuits. Data Sheet RoHS Compliance Bookham is fully committed to environment protection and sustainable development and has set in place a comprehensive program for removing polluting and hazardous substances from all of its products. The relevant evidence of RoHS compliance is held as part of our controlled documentation for each of our compliant products. RoHS compliance parts are available to order, please refer to the ordering information section for further details. Ordering Information: Please quote the Product Code from below when ordering as this is the identification that appears on the part when shipped. Product Code Length Fibertail Diameter Fibre types Product Name LC151B-20J28 116 cm ±30 mm 0.9 mm standard 4/155 Mb/s Single-Mode OSC Laser, 1510 nm with SC/PC connector LC151B-20J34 116 cm ±30 mm 0.9 mm standard 4/155 Mb/s Single-Mode OSC Laser, 1510 nm with FC/PC connector LC151B-20J57 116 cm ±30 mm 0.9 mm standard 4/155 Mb/s Single-Mode OSC Laser, 1510 nm with LC/PC connector LC151B-20J59 116 cm ±30 mm 0.9 mm standard 4/155 Mb/s Single-Mode OSC Laser, 1510 nm with MU/PC connector Contact Information North America Bookham Worldwide Headquarters Europe Paignton Office Asia Shenzhen Office 2584 Junction Ave. San Jose CA 95134 USA Brixham Road Paignton Devon TQ4 7BE United Kingdom 2 Phoenix Road Futian Free Trade Zone Shenzhen 518038 China • Tel: +1 408 919 1500 • Tel: +44 (0) 1803 66 2000 • Fax: +1 408 919 6083 • Fax: +44 (0) 1803 66 2801 • Fax: +86 755 33305805 +86 755 33305807 • Tel: +86 755 33305888 Important Notice Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by Bookham before they become applicable to any particular order or contract. In accordance with the Bookham policy of continuous improvement specifications may change without notice. The publication of information in this data sheet does not imply freedom from patent or other protective rights of Bookham or others. Further details are available from any Bookham sales representative. www.bookham.com [email protected] DANGER INVISIBLE LASER RADIATION DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS CLASS 1M LASER REFERENCE IEC 60825-1: Edition 1.2 4 INVISIBLE LASER RADIATION AVOID DIRECT EXPOSURE TO BEAM OUTPUT POWER 21mW WAVELENGTH >1500nm CLASS IIIb LASER PRODUCT THIS PRODUCT COMPLIES WITH 21 CFR 1040.10 ISO14001:1996 EMS 504193 TL9000 Rev 3.0 (ISO9001:2000) FM15040 Caution - use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. BH13090 Rev 1.0 January 2007 ©Bookham 2006. Bookham is a registered trademark of Bookham Inc.