D2570 AGERE | Alldatasheet
Document overview
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Technical content
Features
■ ITU wavelengths available from 1528.77 nm —1610.06 nm ■ SONET/SDH compatible up to OC-48/STM-16 ■ T emperature tunable for precise wavelength selection ■ Integrated optical isolator ■ High-performance, multiquantum well (MQW) distributed-feedback (DFB) laser ■ Industry-standard, 14-pin butterfly package ■ Characterized at 2.488 Gbits/s (NRZ) ■ InGaAs, PIN photodetector back-facet monitor ■ Low threshold current ■ High-reliability, hermetic packaging ■ Excellent long-term wavelength stability can elimi- nate the need for external wavelength locker ■ Qualified to meet the intent of T elcordia T echnolo- gies * 468 * T elcordia T echnologies is a trademark of T elcordia T echnologies, Inc.
Applications
■ Three direct-modulated DWDM families available to meet a number of OC-48/STM-16 applications: — Extended reach (100 km) — Very long reach (170 km) —M e t r o D W D M — Digital video Product Codes
Description
The Direct Modulated Isolated DFB Laser Module contains an internally cooled, InGaAs, MQW, distrib- uted-feedback (DFB) laser designed for 1.5 µm appli- cations. The following three direct-modulation DWDM product families have been established to meet vari- ous OC-48/STM-16 system applications: ■ D2526-type: designed to be used in OC-48/ STM-16 (2.488 Gbits/s) for extended reach, dense WDM applications (1800 ps/nm). The wavelength of the laser can be temperature-tuned for precise wavelength selection by adjusting the temperature of the internal thermoelectric cooler. ■ D2555-type: high-performance device designed for very low dispersion; used in fiber spans exceeding 170 km (3000 ps/nm). ■ D2570-type: high-power, direct-modulated laser eliminates the need for optical amplifiers in DWDM many applications. Product Code Peak Power Dispersion Performance D2570H 10 mW 1800 ps/nm (100 km) D2526G 2 mW 1800 ps/nm (100 km) D2555G 2 mW 3000 ps/nm (170 km)
of 25 °C for case temperatures from –40 °C to +70 °C. control the laser chip temperature. input. The RF input has a nominal 25 Ω impedance. nectors and pigtail lengths are available. † SMF-28 is a trademark of Corning Inc. † Both leads should be grounded for optimum performance. Figure 1. Circuit Schematic
1 Thermistor
2 Thermistor
3 Laser dc Bias (Cathode) (–)
4 Back-facet Monitor Anode (–)
5 Back-facet Monitor Cathode (+)
6 Thermoelectric Cooler (+)*
7 Thermoelectric Cooler (–) †
8 Case Ground
9 Case Ground
10 Case Ground
11 Laser Anode (+)
12 RF Laser Input Cathode (–)
13 Laser Anode (+)
14 Case Ground
extended periods can adversely affect device reliability.
- Does not apply to shipping container.
- All remaining connections
Reverse the order for the proper turn-off sequence. as a result of electrostatic discharge. lines such as JEDEC Publication No. The minimum fiber bend radius is 1.23 in (31.25 mm).
- Place the bottom flange of the module on a flat heat
- Mount four #2-56 screws with Fillister heads
than 1 in./lb. of torque to the screws. Figure 2. Fillister Head Screw Note: Dimensions are in inches and (millimeters).
- Standard operating condition is 5.0 V reverse bias.
† Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C. Table 1. Electrical Characteristics (at 25 °C laser temperature) Table 2. Optical Characteristics (at 25 °C laser temperature) Table 3. Dispersion Performance
- Standard operating condition is 5.0 V reverse bias.
† Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C. Table 4. Electrical Characteristics (at 25 °C laser temperature) Table 5. Optical Characteristics (at 25 °C laser temperature) Table 6. Dispersion Performance
- Standard operating condition is 5.0 V reverse bias.
† Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C. Table 7. Electrical Characteristics (at 25 °C laser temperature) Table 8. Optical Characteristics (at 25 °C laser temperature) Table 9. Dispersion Performance
Data Sheet, Rev. 3 D2570, D2526G, D2555 Wavelength-Selected July 2001 Direct Modulated Isolated DFB Laser Module Agere Systems Inc. 7 Outline Drawings Dimensions are in inches and (millimeters). 0.180 (4.56) HEAT SINK 0.215 (5.45) 0.056 (1.42) 0.030 (0.75) 39.37 (1000.00) MIN 0.10 (2.5) 0.260 (6.60) 0.215 (5.47) REF 0.036 (0.91) PIN 1 0.078 (1.98) 0.100 (2.54) TYP 0.105 (2.67) DIA TYP (4) PLACES MIN STRAIN RELIEF PIN 14 TRADEMARK, CODE, LASER SERIAL NUMBER, AND DATE CODE IN APPROX. AREA SHOWN 0.200 (5.08) 1.025 (26.04) 0.10 ± 0.002 (2.54 ± 0.051) 0.213 (5.40) TYP 0.500 (12.70) 0.350 (8.89) 0.605 (15.37) MAX 2.03 (51.6) 0.863 (21.91) 0.575 (14.61) 0.820 (20.83) 0.700 (17.78) 0.365 (9.27) MAX 1.180 (29.97) 1-520.g
D2570, D2526G, D2555 Wavelength-Selected Data Sheet, Rev. 3 Direct Modulated Isolated DFB Laser Module July 2001 8 Agere Systems Inc.
Ordering Information
Table 10. Ordering Information D2526G (FC-PC Connector)
Table 11. Ordering Information D2555G (FC-PC Connector)
Table 12. Ordering Information D2570H
Safety requirements. The device has been classified with the FDA under accession number 8720010. This product complies with 21 CFR 1040.10 and 1040.11. attached to the outside of the shipping carton. Product is not shipped with power supply. hazardous laser radiation exposure.
D2570, D2526G, D2555 Wavelength-Selected Data Sheet, Rev. 3 Direct Modulated Isolated DFB Laser Module July 2001 For additional information, contact your Agere Systems Account Manager or the following: INTERNET: http://www.agere.com E-MAIL: docmaster@agere.com N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, P A 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA P ACIFIC: Agere Systems Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 CHINA: Agere Systems (Shanghai) Co., Ltd., 33/F Jin Mao Tower, 88 Century Boulevard Pudong, Shanghai 200121 PRC Tel. (86) 21 50471212, FAX (86) 21 50472266 JAPAN: Agere Systems Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, T okyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EUROPE: Data Requests: DA T ALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148 T echnical Inquiries: OPTOELECTRONICS MARKETING: (44) 1344 865 900 (Ascot UK) Agere Systems 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. ST is a registered trademark of Agere Systems Inc. Copyright © 2001 Agere Systems Inc. All Rights Reserved July 2001 DS00-165OPTO-3 (Replaces DS00-165OPTO-2)