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Data Sheet January 1999
A371-Type Analog Uncooled Isolated DFB FastLight TM Laser Module
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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
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Applications
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Video and data applications Downstream telephony and data Return path systems Mixed analog and digital modulation Telecommunications
Benefits
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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.
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Features
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Eight-pin package suitable for CATV applications Narrow linewidth, distributed-feedback, multiquantum-well (DFB-MQW)1.3 m laser with single-mode fiber pigtail Wide operating temperature range: -40 C to +85 C Frequency range up to 1.0 GHz
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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.
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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 %
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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 C 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 range CW, PF = 2.0 mW, T = 25 C PF = 2.0 mW, CW PF = 2.0 mW CW, PF = 2.0 mW IMON = constant, CW CW -- =5V VR V R = 5 V --
Min -40 -- 5 2 10 7.5 67 1280 -- 30 -- -- 3 100 -- --
Typ -- 2 11 -- 20 -- -- -- -- 40 0.5 1.1 -- -- 10 0.09
Max 85 -- 15 50 30 55 200 1335 1 -- 1.25 1.6 8 1000 200 0.1
Unit C mW mA mA mA W/mA nm nm dB dB V A nA nm/C
Lucent Technologies Inc.
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A371-Type Analog Uncooled Isolated DFB FastLight Laser Module
Data Sheet January 1999
Electro/Optical Characteristics (continued)
Analog Operation
The A371-Type Laser Module has the capability of being used in a wide variety of analog operations. These may include several channels of pure video signals, or a mix of video signals with digital data channels riding on analog carriers. It is difficult to prepare a single battery of testing conditions that will satisfy all applications. The following table contains a set of testing conditions that Lucent believes will give a broad indication of the performance of the A371 Series Laser Module. Please contact your local Field Application Engineer if different testing conditions and parametric limits are required. The distortion characteristics are measured using a two-tone test. The frequencies are 13 MHz and 19 MHz. The second-order distortion components are measured at f1 + f2 = 32 MHz and f1 - f2 = 6 MHz. All third-order distortion components are measured in the frequency range of 5 MHz--200 MHz, and they meet the required level. All measurements are made with SC-SPC connectors on the laser module pigtails. Table 3. Analog Characteristics Parameter Output Power* Relative Intensity Noise Symbol PO RIN Test Conditions CW, T = -40 C to +85 C CW, PF = 2.0 mW, Freq. = 5 MHz to 300 MHz; no fiber loss, T = -40 C to +85 C -3 dB, PF = 2.0 mW, T = -40 C to +85 C T = 25 C, PF = 2.0 mW, OMI = 0.2; Two-tone test: f1 = 13 MHz, f2 = 19 MHz; 20 km of fiber, (7 dB loss) plus connector loss, f1 f2 T = 25 C, PF = 2.0 mW, OMI = 0.2; Two-tone test: f1 = 13 MHz, f2 = 19 MHz; 20 km of fiber (7 dB loss), plus connector loss, all peaks from 5 MHz--50 MHz meet this level T = 25 C, PF = 2.0 mW, OMI = 0.2; ref. to one-tone: 5 MHz to 50 MHz, 20 km of fiber, (7 dB loss) plus connector loss T = 25 C, PF = 2.0 mW Min -- -- Typ 2.0 -155 Max -- -145 Unit mW dB/Hz
Modulation Bandwidth Second-order Distortions
BW --
1.0 --
-- -54 -58 -46
-- -50 -54 -42
GHz dBc dBc dBc
Third-order Distortions
--
--
-70 -75 -69
-63 -68 -61
dBc dBc dBc
Spurious Noise
NSP
--
-63 -61
-60 -58
dBc dBc
Spurious Noise (carrier off)
N'SP
--
RF Bandpass Flatness
* See Table 5 for more information. Double-isolated version. Low-performance option. Single- and double-isolated versions.
BPF
Peak to valley, 5 MHz to 200 MHz
--
-50 -54 -45 --
-45 -50 -40 1.0
dBc dBc dBc dB
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Lucent Technologies Inc.
Data Sheet January 1999
A371-Type Analog Uncooled Isolated DFB FastLight Laser Module
Outline Diagram
Dimensions are in inches (and millimeters).
TRADEMARK, CODE, LASER SERIAL NUMBER, AND/OR DATE CODE IN APPROXIMATE AREA SHOWN 4 3 2 1
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8 1.06 (27.0) MIN
0.52 (13.2)
39.37 (1000) MIN PIGTAIL LENGTH
0.045 (1.143) 0.20 (5.00) 0.010 (0.254)
0.29 (7.37)
0.165 (4.20) 0.016 (0.410) 0.100 (2.54) 0.300 (7.62) 0.110 (2.79)
0.085 (2.16) 0.17 (4.32) 0.30 (7.62)
1-899.f
Lucent Technologies Inc.
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A371-Type Analog Uncooled Isolated DFB FastLight Laser Module
Data Sheet January 1999
Qualification Information
The A371-Type Laser Module has completed and passed the following qualification tests and meets the intent of Bellcore TR-NWT-000468 for interoffice environments and TA-TSY-000983 for outside plant environments. Table 4. A371-Type Laser Module Qualification Test Plan Qualification Test Mechanical Shock Vibration Solderability Thermal Shock Fiber Pull Accelerated (Biased) Aging High-temperature Storage Temperature Cycling Cyclic Moisture Resistance Damp Heat Internal Moisture Flammability ESD Threshold Conditions 500 G 20 g, 20 Hz--2,000 Hz -- Delta T = 100 C 1 kg; 3 times 85 C, 5,000 hrs. 85 C, 2,000 hrs. 500 cycles 10 cycles 40 C, 95% RH, 1,344 hrs. <5,000 ppm water vapor -- -- Sample Size 11 11 11 11 11 25 11 11 11 11 11 -- 6 Reference MIL-STD-883 Method 2002 MIL-STD-883 Method 2007 MIL-STD-883 Method 2007 MIL-STD-883 Method 2003 Bellcore 983 Bellcore 983 Section 5.18 Bellcore 983 Bellcore 983 Section 5.20 Bellcore 983 Section 5.23 MIL-STD-202 Method 103 MIL-STD-883 Method 1018 TR357 Sec. 4.4.2.5 Bellcore 983 Section 5.22
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Lucent Technologies Inc.
Data Sheet January 1999
A371-Type Analog Uncooled Isolated DFB FastLight Laser Module
Laser Safety Information
Class IIIb Laser Product
This product complies with 21 CFR 1040.10 and 1040.11. 8.3 m single-mode pigtail or connector Wavelength = 1.3 m Maximum power = 10 mW Because of size constraints, laser safety labeling is not affixed to the module but attached to the outside of the shipping carton. Product is not shipped with power supply. Caution: Use of controls, adjustments, and procedures other than those specified herein may result in hazardous laser radiation exposure.
DANGER
INVISIBLE LASER RADIATION AVOID DIRECT EXPOSURE TO BEAM. Indium Gallium Arsenide Phosphide Laser 10 mW max. Output @ 1.3 m m Class IIIb Laser Product Complies with 21 CFR 1040.10 and 1040.11
DANGER INVISIBLE RADIATION IS EMITTED FROM THE END OF THE FIBER OR CONNECTOR. AVOID DIRECT EXPOSURE TO THE BEAM. DO NOT VIEW WITH OPTICAL INSTRUMENTS.
Lucent Technologies Inc.
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A371-Type Analog Uncooled Isolated DFB FastLight Laser Module
Data Sheet January 1999
Ordering Information
Table 5. Ordering Information Device Code A371-20AS A371-20BS A371-20FS A371-20GS A371-20NS A371-22AD A371-22BD A371-22FD A371-22GD A371-22ND A371-24AS A371-24BS A371-24FS A371-24GS A371-24NS Comcode 108053307 108173956 108120445 108130444 108043522 108348699 108348707 108348715 108348723 108348731 108401019 108401027 108401035 108401043 108401050 Pfiber 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW 2.0 mW Connector SC-PC SC-APC FC-PC FC-APC none SC-PC SC-APC FC-PC FC-APC none SC-PC SC-APC FC-PC FC-APC none Performance Option Single Isolator Single Isolator Single Isolator Single Isolator Single Isolator Double Isolator Double Isolator Double Isolator Double Isolator Double Isolator Low Performance Low Performance Low Performance Low Performance Low Performance
For additional information, contact your Microelectronics Group Account Manager or the following: INTERNET: http://www.lucent.com/micro, or for Optoelectronics information, http://www.lucent.com/micro/opto E-MAIL: docmaster@micro.lucent.com N. AMERICA: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18103 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 CHINA: Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F, Zao Fong Universe Building, 1800 Zhong Shan Xi Road, Shanghai 200233 P. R. China Tel. (86) 21 6440 0468, ext. 316, FAX (86) 21 6440 0652 JAPAN: Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EUROPE: Data Requests: MICROELECTRONICS GROUP DATALINE: Tel. (44) 1189 324 299, FAX (44) 1189 328 148 Technical Inquiries: OPTOELECTRONICS MARKETING: (44) 1344 865 900 (Ascot UK)
Lucent Technologies Inc. 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. No rights under any patent accompany the sale of any such product(s) or information.FastLight is a trademark of Lucent Technologies Inc.
Copyright (c) 1999 Lucent Technologies Inc. All Rights Reserved
January 1999 DS99-035LWP (Replaces DS98-433LWP)
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