Fiber Optic Business Unit Tyco Electronics/LDI 2 Olsen Avenue Edison, New Jersey 08820 USA Voice: 732-549-9001 Fax: 732-906-1559 Internet: www.laserdiode.com E-mail: sales@laserdiode.com Laser Diode Incorporated 1310nm Laser Diode Power to 2mW Singlemode 9/125/900 fiber 14-pin DIP Buried Hetero-Structure laser design High stability fiber coupling Hermetically sealed Excellent output power and wavelength stability are features of Laser Diode Incorporated's laser series. These modules are ideal for applications such as telecommunications and test instrumentation. These devices comprise a Fabry-Perot laser chip coupled to a singlemode optical fiber packaged in LDI's high stability, temperature controlled, 14-pin dual-in-line module. LDI's laser chips are based on a buried hetero-structure using MOCVD technology. 10-4400-0011 Rev. A Laser-welded fiber alignment assembly for long-term power stability. Specifications and Limits @ 25oC Power Options (uW) 500 1000 2000 nm nm nm 1270-1330 1.7 2 1270-1330 1.7 2 1270-1330 1.7 2 mA mA V ns 6;15 10;25 2 0.5 6;15 10;25 2 0.5 6;15 15;25 2 0.5 uA nA pF ns V dB 50;1200 10 6 2 10 _0.5 + 50;1200 10 6 2 10 _ 0.5 + 50;1200 10 6 2 10 _ 0.5 + -20 to +70 -40 to +85 -20 to +70 -40 to +85 -20 to +70 -40 to +85 45 .75 1.2 1.2 45 .75 1.2 1.2 45 .75 1.2 1.2 Spectral Characteristics The resulting characteristics are high efficiency, excellent thermal stability, moderate threshold current, and bandwidth greater than 1GHz. The module includes; a photodiode for monitoring the laser chip output power, a thermistor for monitoring the laser submount tempertature, and a Peltier-effect thermoelectric cooler. The cooler can be used to maintain a constant laser temperature or to temperature tune the spectral frequency of the laser. Proven module design and a rigorous quality assurance program ensure the reliability and long operational life of these products. The SCW 1301 Series lasers have a nominal wavelength of 1310nm. The light output is coupled into a singlemode optical fiber with a core diameter of 9um and a cladding diameter of 125um. The fiber has a protective tight buffer upjacket of 900um diameter Hytrel (R) . Wavelength Range Spectral width, RMS (typ) Spectral width, FWHM (typ) Drive Characteristics Threshold current (typ;max) Modulation current (typ;max) Forward voltage maximum Maximum optical rise/fall time Monitor Diode Photocurrent at PMAX (min;max) Maximum dark current Maximum capacitance Maximum rise/fall time Maximum reverse voltage Tracking error * Temperature Range Module operating temperature Storage temperature oC oC Thermoelectric Cooler These lasers are typically used in short and intermediate distance telecommunications systems including protocols such as SONET, SDH, and PDH. They are also used in long distance, high-speed data communications network applications such as "fast" Ethernet or Fiberchannel. The SCW 1301 is an excellent device for use in high-stability test equipment products. Hytrel is a trademark of Dupont. Maximum cooler capacity Current for maximum capacity Maximum current Voltage for maximum current oC A A V Thermistor Resistance at T = 25oC Temperature coefficient K %/oC 9.8-10.2 -4.4 9.8-10.2 -4.4 9.8-10.2 -4.4 Notes: * Tracking error is the variation of the linear relationship between fiber-coupled power and monitor diode current over the specified operating temperature range. Typical Laser Characteristics Typical Device Spectrum Photodiode Current (uA) 0 100 200 300 400 500 3.0 2.5 0.8 2.0 P 0.6 Pd I 1.5 V 0.4 1.0 Forward Voltage (V) Output Power (mW) 1.0 Relative Intensity 1.0 0.2 0.5 0 0 0 10 20 30 Forward Current (mA) 40 50 0 1301 1306 1311 Wavelength (nm) 10-4400-0011 Rev. A SCW-1301 Package 0.60 [15.2] 1.0 meter nominal fiber length 0.30 [7.6] 0.75 [19.1] 1.00 [25.4] SC Connector 0.50 [12.7] 0.018 [0.46] 0.10 [2.54] 0.28 [7.1] FC/PC and FC/APC Connectors 0.36 [8.9] 0.25 [6.4] ST Connector Note: Connectors are not drawn to scale. 0.82 [20.8] 0.04 [1.0] Application Notes Pin Assignments F SERIES Function Pin A laser diode can be damaged by an overdrive condition or a very short duration transient spike. It is advisable to protect the laser diode by providing a slow-start circuit to ramp the driver current to the appropriate DC level. Commercial drivers are available in circuit form. The monitor photodiode in this device reads the optical power from the rear facet of the laser diode. This technique provides a good indication of the level and stability of the optical power that is coupled from the front facet of the laser into the optical fiber. The current from the monitor diode is typically used in a dynamic feedback loop to control the laser drive current and thus maintain a constant optical output level. 1 2,3,4,6,13 5 7 8 9 10 11,12 14 Pin Cooler anode (+) No connection Ground, laser anode (+) Detector cathode (-) Detector anode (+) Laser cathode (-) Ground Thermistor Cooler cathode (-) 1 2,3,4,6,12,13 5 7 8 9 10 11 14 G SERIES Function Cooler anode (+) No connection Ground, laser anode (+) Detector cathode (-) Detector anode (+) Laser cathode (-) Ground, thermistor Thermistor Cooler cathode (-) Thermoelectric Cooler Control + 5V 100K 10K (for 25 OC) + 5V 10K This laser package incorporates a Peltier-effect thermoelectric cooler (TEC). It is imperative that the TEC is running when the laser chip is operating to prevent thermal damage to the laser. The thermistor that measures 10 Kohms at 2 5 oC i s m o u n t e d c l o s e t o t h e l a s e r c h i p t o provide feedback to the temperature controller. A simple drive circuit for the TEC is included in this document. *T 10M 10 uF TIP-120 330 Cooler + LM-358 Cooler 10K - TIP-125 - 5V * DIP Thermistor 10-4400-0011 Rev. A 1310nm Laser Diode Product Changes Laser Diode Incorporated reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. Personal Hazard Normal aversion reactions will protect from radiation hazards to the eye associated with devices of this kind. Direct and prolonged exposure to a laser beam may cause eye damage. Observe precautions accompanying the product and precautions appropriate to a Class lllb laser. Handling Precautions Handle optical fiber with normal care, avoiding stretch, tension, twist, kink, or bend abuse. Products are subject to the risk normally associated with sensitive electronic devices including static discharge, transients, and overload. Special Orders Some products are supplied with performance characteristics to meet unique customer requirements and differ from those indicated herein. Contact the Laser Diode Incorporated Sales Department or your local representative to discuss your individual requirements. For a complete listing of representatives, visit our website at www.laserdiode.com. Ordering Products can be ordered directly from Laser Diode Incorporated or its representatives. For a complete listing of representatives, visit our website at www.laserdiode.com. Refer to the following part numbers: Ordering Information Description Part Number SCW 1301X-050XX SCW 1301X-100XX SCW 1301X-200XX laser, 1310nm, 500 uW, 14-pin DIP, TEC, 9/125/900 um pigtail laser, 1310nm, 1000 uW, 14-pin DIP, TEC, 9/125/900 um pigtail laser, 1310nm, 2000 uW, 14-pin DIP, TEC, 9/125/900 um pigtail Note: To indicate the thermistor pin assignment you require, substitute one of the following designations for the "X" in the above table: Use F (floating thermistor) to indicate F Series pinout. Use G (grounded thermistor) to indicate G Series pinout. To indicate the pigtail connector termination you require, substitute one of the following designations for the "XX" in the above table: Use FC to indicate an FC/PC type connector. Use LC to indicate an LC/PC type connector. Use SC to indicate an SC/PC type connector. Use ST to indicate an ST (R) type connector. For no connector, omit suffix. ST is a trademark of Lucent Technologies Inc. DANGER "INVISIBLE LASER RADIATION - AVOID DIRECT EXPOSURE TO BEAM" "CLASS IIIb LASER PRODUCT" MAX. PEAK POWER 2 mW WAVELENGTH 1310nm CAUTION: Use of contols, adjustments, or performance of procedures other than specified herein may result in hazardous radiation exposure. Fiber Optic Business Unit Tyco Electronics/LDI 2 Olsen Avenue Edison, New Jersey 08820 USA Voice: 732-549-9001 Fax: 732-906-1559 Internet: www.laserdiode.com E-mail: sales@laserdiode.com Laser Diode Incorporated 10-4400-0011 Rev. A