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D2526G47 Schematic ( PDF Datasheet ) - Agere Systems

Teilenummer D2526G47
Beschreibung D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module
Hersteller Agere Systems
Logo Agere Systems Logo 




Gesamt 12 Seiten
D2526G47 Datasheet, Funktion
Data Sheet, Rev. 3
July 2001
D2570, D2526, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
Applications
s 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)
— Metro DWDM
— Digital video
Product Codes
The 1.5 µm D2570, D2526G, and D2555 Laser Modules are
available in a 14-pin, hermetic, butterfly package.
Features
s ITU wavelengths available from
1528.77 nm —1610.06 nm
s SONET/SDH compatible up to OC-48/STM-16
s Temperature tunable for precise wavelength
selection
s Integrated optical isolator
s High-performance, multiquantum well (MQW)
distributed-feedback (DFB) laser
s Industry-standard, 14-pin butterfly package
s Characterized at 2.488 Gbits/s (NRZ)
s InGaAs, PIN photodetector back-facet monitor
s Low threshold current
s High-reliability, hermetic packaging
s Excellent long-term wavelength stability can elimi-
nate the need for external wavelength locker
s Qualified to meet the intent of Telcordia Technolo-
gies * 468
* Telcordia Technologies is a trademark of Telcordia Technologies,
Inc.
Product
Code
D2570H
D2526G
D2555G
Peak
Power
10 mW
2 mW
2 mW
Dispersion
Performance
1800 ps/nm (100 km)
1800 ps/nm (100 km)
3000 ps/nm (170 km)
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:
s 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.
s D2555-type: high-performance device designed for
very low dispersion; used in fiber spans exceeding
170 km (3000 ps/nm).
s D2570-type: high-power, direct-modulated laser
eliminates the need for optical amplifiers in DWDM
many applications.






D2526G47 Datasheet, Funktion
D2570, D2526G, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
Data Sheet, Rev. 3
July 2001
D2570 Characteristics
Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are
the result of engineering evaluations. Typical values are for information purposes only and are not part of the test-
ing requirements.
Table 7. Electrical Characteristics (at 25 °C laser temperature)
Parameter
Symbol
Test Conditions
Slope Efficiency
Threshold Current
Laser Forward Voltage
Laser Submount Temperature
Monitor Reverse-bias Voltage*
Monitor Current
Monitor Dark Current
Input Impedance
Thermistor Current
Resistance Ratio
Thermistor Resistance
TEC Current
TEC Voltage
TEC Capacity
η
ITH
VLF
TLASER
VRMON
IRMON
ID
ZIN
ITC
RTH
ITEC
VTEC
T
LF = 10 mW (CW)
LF = 10 mW (CW)
POL = 5 mW (CW)
IF = 0, VRMON = 5 V
TL = 25 °C
TL = 25 °C, TC = 70 °C
TL = 25 °C, TC = 70°C
TC = 70 °C
* Standard operating condition is 5.0 V reverse bias.
† Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C.
Min
0.12
20
3
0.25
10
9.1
9.5
Typ
0.15
14
1.3
5
0.7
0.01
25
0.6
1.3
Max Unit
0.2
25
1.8
30
10
1.25
0.1
100
9.6
10.5
1.0
2.0
50
mW/mA
mA
V
°C
V
mA
µA
µA
k
A
V
°C
Table 8. Optical Characteristics (at 25 °C laser temperature)
Parameter
Peak Optical Output Power
Center Wavelength
(See Table 12.)
Line Width (3 dB full width)
Side-mode Suppression Ratio
Optical Isolation
Wavelength Drift (EOL)
Center Wavelength Drift with
Case Temperature
Wavelength Temperature Tuning
Coefficient
Tracking Error
Symbol
Test Conditions
PPEAK
λc
∆λ
SMSR
∆λ
∆λC/TC
TL = 25 °C
CW wavelength
Modulated at 2.5 Gbits/s
at rated power
CW
TC = 0 °C to 70 °C
Tested over
25-year lifetime
0 °C TC 70 °C
——
— TC = –20 °C/25 °C/70 °C
Min
10
1528.77
30
30
Typ Max Unit
— — mW
— 1610.06 nm
2 10 MHz
— — dB
— — dB
— ±0.1 nm
— 1 pm/°C
0.095
— nm/°C
— 1 dB
Table 9. Dispersion Performance
Parameter
Dispersion Penalty for Extended Reach
Symbol
DP
Test
Conditions
1800 ps/nm
Min Typ
——
Max
2.5
Unit
dB
66 Agere Systems Inc.

6 Page









D2526G47 pdf, datenblatt
D2570, D2526G, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
Data Sheet, Rev. 3
July 2001
For additional information, contact your Agere Systems Account Manager or the following:
INTERNET: http://www.agere.com
E-MAIL:
N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286
1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106)
ASIA PACIFIC: 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, Tokyo 141, Japan
Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700
EUROPE:
Data Requests: DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148
Technical 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)

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