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PDF D2570H876 Data sheet ( Hoja de datos )

Número de pieza D2570H876
Descripción D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module
Fabricantes Agere Systems 
Logotipo Agere Systems Logotipo



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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.

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D2570H876 pdf
Data Sheet, Rev. 3
July 2001
D2570, D2526G, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
D2555 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 4. 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
0.05
20
3
0.1
10
9.1
9.5
Typ
0.08
12
1.3
5
0.3
0.01
25
0.6
1.3
Max Unit
0.10
35
1.8
30
10
1.9
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 5. Optical Characteristics (at 25 °C laser temperature)
Parameter
Peak Optical Output Power
Center Wavelength
(See Table 11.)
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
TL = 25 °C
CW wavelength
Modulated at 2.5 Gbits/s
at rated power
SMSR
∆λ
∆λC/TC
CW
TC = 0 °C to 75 °C
Tested over
25-year lifetime
0 °C TC 75 °C
——
— TC = –20 °C/25 °C/70 °C
Min
2.0
1528.77
30
30
Typ Max Unit
— — mW
— 1563.86 nm
2 10 MHz
— — dB
— — dB
±0.1
nm
— 1 pm/°C
0.095
— nm/°C
— 1 dB
Table 6. Dispersion Performance
Parameter
Dispersion Penalty for Extended Reach
Symbol
DP
Test
Conditions
3000 ps/nm
Min Typ
——
Max
2.0
Unit
dB
Agere Systems Inc.
5

5 Page





D2570H876 arduino
Data Sheet, Rev. 3
July 2001
D2570, D2526G, D2555 Wavelength-Selected
Direct Modulated Isolated DFB Laser Module
Ordering Information (continued)
Table 12. Ordering Information D2570H (ST Ferrule) (continued)
Device
Code
D2570H875
D2570H874
D2570H873
D2570H872
D2570H871
D2570H870
D2570H869
ITU Freq.
(THz)
187.5
187.4
187.3
187.2
187.1
187.0
186.9
Center
Wavelength
(nm)
1598.89
1599.75
1600.60
1601.45
1602.31
1603.17
1604.33
Comcode
108487752
108487745
108487737
108487729
108487711
108578659
108578642
Device
Code
D2570H868
D2570H867
D2570H866
D2570H865
D2570H864
D2570H863
D2570H862
ITU Freq.
(THz)
186.8
186.7
186.6
186.5
186.4
186.3
186.2
Center
Wavelength
(nm)
Comcode
1604.88
1605.74
1606.60
1607.47
1608.33
1609.19
1610.06
108578634
108578618
108578469
108578428
108578410
108578402
108578394
Laser Safety Information
Class IIIb Laser Product
FDA/CDRH Class IIIb laser product. All versions are Class IIIb laser products per CDRH, 21 CFR 1040 Laser
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.
8.3 µm/125 µm single-mode fiber pigtail with 900 µm tight buffer jacket and connector
Wavelength = 1.5 µm
Maximum power = 40 mW
Because of size constraints, laser safety labeling (including an FDA Class IIIb label) 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
IS EMITTED FROM THE END
OF FIBER OR CONNECTOR
Avoid direct exposure to beam
Do not view beam directly with
optical instruments
INVISIBLE LASER RADIATION EMITTED FROM END OF FIBER OR CONNECTOR
Avoid exposure to beam
Class IIIb Laser Product FDA/CDRH, 21 CFR 1040 Max. Output: 40 mW Wavelength: 1.5 µm
Agere Systems Inc.
11

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