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부품번호 D2555G20 기능
기능 D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module
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D2555G20 데이터시트, 핀배열, 회로
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.




D2555G20 pdf, 반도체, 판매, 대치품
D2570, D2526G, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
Data Sheet, Rev. 3
July 2001
D2526 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 testing
requirements.
Table 1. 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 = 2 mW (CW)
LF = 2 mW (CW)
POL = 1 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
0.06
20
3
0.1
10
9.1
9.5
Typ
0.09
14
1.3
5
0.3
0.01
25
0.6
1.3
Max Unit
0.13 mW/mA
30 mA
1.8 V
30
10
1.5
0.1
100
9.6
10.5
1.0
2.0
50
°C
V
mA
µA
µA
k
A
V
°C
Table 2. Optical Characteristics (at 25 °C laser temperature)
Parameter
Peak Optical Output Power
Center Wavelength
(See Table 10.)
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
TL = 25 °C
CW wavelength
Modulated at 2.5 Gbits/s
at rated power
CW
∆λ
∆λC/TC
TC = 0 °C to 70 °C
Tested over
25-year lifetime
0 °C TC 70 °C
——
— TC = –20 °C/25 °C/70 °C
Min
2.0
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 3. Dispersion Performance
Parameter
Dispersion Penalty for Extended Reach
Symbol
DP
Test
Conditions
1800 ps/nm
Min Typ
——
Max
2.0
Unit
dB
4 Agere Systems Inc.

4페이지










D2555G20 전자부품, 판매, 대치품
Data Sheet, Rev. 3
July 2001
Outline Drawings
Dimensions are in inches and (millimeters).
D2570, D2526G, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
0.500 (12.70)
MIN
0.500
(12.70)
0.605
(15.37)
MAX
0.350
(8.89)
0.105 (2.67) DIA
TYP (4) PLACES
1.025 (26.04)
0.020 (0.51) TYP
~
0.100 (2.54) TYP
PIN 1
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND DATE CODE IN APPROX. AREA SHOWN
STRAIN
RELIEF
0.078 (1.98)
PIN 14
0.213 (5.40) TYP
0.10 ± 0.002
(2.54 ± 0.051)
0.036
(0.91)
0.180 (4.56)
0.365
(9.27)
MAX
0.056 (1.42)
0.215 (5.45)
0.820 (20.83)
0.700 (17.78)
2.03 (51.6)
0.863 (21.91)
0.575 (14.61)
39.37 (1000.00)
MIN
0.10
(2.5)
0.260 (6.60)
1.180 (29.97)
HEAT SINK
0.030 (0.75)
0.215
(5.47)
REF
0.200
(5.08)
1-520.g
Agere Systems Inc.
7

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