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A371-24NS Dataheets PDF



Part Number A371-24NS
Manufacturers Agere Systems
Logo Agere Systems
Description A371-Type Analog Uncooled Isolated DFB FastLight Laser Module
Datasheet A371-24NS DatasheetA371-24NS Datasheet (PDF)

Data Sheet January 1999 A371-Type Analog Uncooled Isolated DFB FastLight ™ Laser Module s s s No thermoelectric cooler required Single- and double-isolated versions available High output power: typically 2.0 mW peak power coupled into single-mode fiber Hermetically sealed active components Internal back-facet monitor Qualification program: Bellcore TA-983 s s s Applications s s s s s Video and data applications Downstream telephony and data Return path systems Mixed analog and digital modulat.

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Data Sheet January 1999 A371-Type Analog Uncooled Isolated DFB FastLight ™ Laser Module s s s No thermoelectric cooler required Single- and double-isolated versions available High output power: typically 2.0 mW peak power coupled into single-mode fiber Hermetically sealed active components Internal back-facet monitor Qualification program: Bellcore TA-983 s s s Applications s s s s s Video and data applications Downstream telephony and data Return path systems Mixed analog and digital modulation Telecommunications Benefits s Easily board mounted Requires no lead bending No additional heat sinks required Pin compatible with industry-standard, 14-pin laser module Highly efficient DFB-MQW laser structure allows for lower threshold and drive currents, and reduced power consumption High output power allows for longer system spans, more fiber splits, and greater tolerance of fiber and connector quality Internal isolator minimizes spurious noise The low-profile A371-Type Analog Laser Module is ideally suited for CATV applications, particularly in systems where long spans and superior reliability are the critical considerations. s s s Features s s s Eight-pin package suitable for CATV applications Narrow linewidth, distributed-feedback, multiquantum-well (DFB-MQW)1.3 µm laser with single-mode fiber pigtail Wide operating temperature range: –40 °C to +85 °C Frequency range up to 1.0 GHz s s s s A371-Type Analog Uncooled Isolated DFB FastLight Laser Module Data Sheet January 1999 Description The A371-Type Uncooled Isolated Laser Module consists of a laser diode coupled to a single-mode fiber pigtail. The device is available in a standard, 8-pin configuration (see Figure 1 and/or Table 1) and is ideal for CATV applications. The module includes a narrow linewidth (<1 nm), DFBMQW, single-mode laser and an InGaAs PIN photodiode back-facet monitor in a hermetically sealed package. The device characteristics listed in this document are met at 2.0 mW output power. Higher- or lower-power operation is possible. Under conditions of a fixed photodiode current, the change in optical output is typically ±0.5 dB over an operating temperature range of –40 °C to +85 °C. This device incorporates the new Laser 2000 manufacturing process from the Optoelectronics unit of Lucent Technologies Microelectronics Group. Laser 2000 is a low-cost platform that targets high-volume manufacturing and tight product distributions on all optical subassemblies. This platform incorporates an advanced optical design that is produced on Opto’s highly automated production lines. The Laser 2000 platform is qualified for central office and uncontrolled environments, and can be used for applications requiring high performance and low cost. 4 3 2 1 5 6 7 8 1-900 (C) Figure 1. A371-Type Analog Uncooled Isolated DFB Laser Module Schematic, Top View Table 1. Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 Connection NC Case ground NC Photodiode cathode Photodiode anode Laser diode cathode Laser diode anode NC Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Maximum Peak Laser Drive Current or Maximum Fiber Power* Peak Reverse Laser Voltage: Laser Monitor Monitor Forward Current Operating Case Temperature Range Storage Case Temperature Range Lead Soldering Temperature/Time Relative Humidity (noncondensing) * Rating varies with temperature. Symbol IOP PMAX VRL VRD IFD TC Tstg — RH Min — — — — — –40 –40 — — Max 150 10 2 20 2 85 85 260/10 85 Unit mA mW V V mA °C °C °C/s % 2 Lucent Technologies Inc. Data Sheet January 1999 A371-Type Analog Uncooled Isolated DFB FastLight Laser Module Handling Precautions Caution: This device is susceptible to damage as a result of electrostatic discharge (ESD). Take proper precautions during both handling and testing. Follow guidelines such as JEDEC Publication No. 108-A (Dec. 1988). Although protection circuitry is designed into the device, take proper precautions to avoid exposure to ESD. Electro/Optical Characteristics Table 2. Electro/Optical Characteristics (over operating temperature range unless otherwise noted) Parameter Operating Temperature Range Optical Output Power* Threshold Current Drive Current Above Threshold Slope Efficiency Center Wavelength Spectral Width (–20 dB) Side-mode Suppression Ratio Tracking Error Forward Voltage Input Impedance Monitor Current Monitor Dark Current Wavelength Temperature Coefficient * See Table 5 for more information. † VR = reverse voltage. Symbol T PF ITH IMOD SE λC ∆λ SMSR TE VF R IMON ID — Test Conditions — CW, nominal T = 25 °C T = full range CW, PF = 2.0 mW, T = 25 °C CW, IMON = const., T = full ra.


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