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D2526G915 の電気的特性と機能

D2526G915のメーカーはAgere Systemsです、この部品の機能は「D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module」です。


製品の詳細 ( Datasheet PDF )

部品番号 D2526G915
部品説明 D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module
メーカ Agere Systems
ロゴ Agere Systems ロゴ 




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D2526G915 Datasheet, D2526G915 PDF,ピン配置, 機能
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.

1 Page





D2526G915 pdf, ピン配列
Data Sheet, Rev. 3
July 2001
D2570, D2526G, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the performance characteristics of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect device reliability.
Parameter
Laser Reverse Voltage
dc Forward Current
Operating Case Temperature Range
Storage Case Temperature Range*
Photodiode Reverse Voltage
Photodiode Forward Current
* Does not apply to shipping container.
Symbol
VRLMAX
IFLMAX
TC
Tstg
VRPDMAX
IFPDMAX
Min
–40
–40
Max
2
150
70
85
10
2
Unit
V
mA
°C
°C
V
mA
Handling Precautions
Mounting Instructions
Power Sequencing
To avoid the possibility of damage to the laser module
from power supply switching transients, follow this turn-
on sequence:
1. All ground connections
2. Most negative supply
3. Most positive supply
4. All remaining connections
Reverse the order for the proper turn-off sequence.
Electrostatic Discharge
CAUTION:
This device is susceptible to damage
as a result of electrostatic discharge.
Take proper precautions during both
handling and testing. Follow guide-
lines such as JEDEC Publication No.
108-A (Dec. 1988).
Agere Systems employs a human-body model (HBM)
for ESD-susceptibility testing and protection-design
evaluation. ESD voltage thresholds are dependent on
the critical parameters used to define the model. A
standard HBM (resistance = 1.5 k¾, capacitance =
100 pF) is widely used and, therefore, can be used for
comparison purposes. The HBM ESD threshold pre-
sented here was obtained using these circuit parame-
ters:
Parameter
Human-body Model
Value
>400
Unit
V
Agere Systems Inc.
The minimum fiber bend radius is 1.23 in (31.25 mm).
To avoid degradation in performance, mount the mod-
ule on the board as follows:
1. Place the bottom flange of the module on a flat heat
sink at least 0.5 in. x 1.180 in. (12.7 mm x 30 mm) in
size. The surface finish of the heat sink should be
better than 32 µin. (0.8 µm), and the surface flatness
must be better than 0.001 in. (25.4 µm). Using ther-
mal conductive grease is optional; however, thermal
performance can be improved by up to 5% if con-
ductive grease is applied between the bottom flange
and the heat sink.
2. Mount four #2-56 screws with Fillister heads
(M2-3 mm) at the four screw hole locations (see
Outline Diagram). The Fillister head diameter must
not exceed 0.140 in. (3.55 mm). Do not apply more
than 1 in./lb. of torque to the screws.
0.062 (1.58)
0.031 (0.79)
0.140
(3.56)
0.118
(3.00)
0.086
(2.18)
0.129 (3.28) R
0.041 (1.04)
Note: Dimensions are in inches and (millimeters).
1-532
Figure 2. Fillister Head Screw
3


3Pages


D2526G915 電子部品, 半導体
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



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