Agere D2525P49 Wavelength-selected d2525p isolated dfb laser module with pmf Datasheet

Data Sheet
March 2000
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Applications
■
Telecommunications
— SONET/SDH OC-48/STM-16, OC-192/STM-64
— Extended and ultralong reach
— Undersea systems
— Dense WDM systems
■
Digital video
Description
The 1.5 µm D2525P Laser Module is available in a 14-pin, hermetic, butterfly package.
Features
■
ITU wavelengths available from
1529.55 nm —1610.06 nm
■
Integrated optical isolator
■
High-performance, multiquantum-well (MQW),
distributed-feedback (DFB) laser
■
Industry-standard, 14-pin butterfly package
■
Hermetic package
■
InGaAs, PIN photodetector back-facet monitor
■
Polarization-maintaining fiber pigtail
■
For use with lithium niobate modulators
■
High reliability
■
Narrow linewidth
■
High optical power available
The D2525P family of DFB laser modules is
designed to be used with a lithium niobate external
modulator (see Table 4). The laser module features a
polarization-maintaining fiber (PMF) pigtail, enabling
it to be directly connected to a modulator without the
need of a polarization controller. The PMF maintains
the polarization of the output light to a consistent orientation. This allows the D2525P to be used as a CW
light source for systems requiring extremely low chirp
such as undersea or 10 Gbits/s systems. The module
contains a multiquantum-well (MQW), distributedfeedback (DFB) laser. This device nominally has an
output power of 10 mW. The wavelength of the laser
can be temperature-tuned for more precise wavelength selection by adjusting the temperature of the
internal thermoelectric cooler.
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Data Sheet
March 2000
Description (continued)
CORE
Controlled Feedback
STRESS ROD
The module contains an internal optical isolator that suppresses optical feedback in laser-based, fiber-optic systems. Light reflected back to the laser is attenuated a
minimum of 30 dB.
PRINCIPAL POLARIZATION
AXIS
CLADDING
INNER COATING
(SILICON & ACRYLATE)
OUTER COATING
(ACRYLATE OR NYLON)
Controlled Temperature
An integral thermoelectric cooler (TEC) provides stable
thermal characteristics. The TEC allows for heating and
cooling of the laser chip to maintain a temperature of 25 °C
for case temperatures from –40 °C to +70 °C. The laser
temperature is monitored by the internal thermistor, which
can be used with external circuitry to control the laser chip
temperature.
1-771(C).a
Figure 1. Polarization-Maintaining Fiber
Pin Information
Table 1. Pin Descriptions
Pin
Controlled Power
1
Thermistor
2
Thermistor
3
Laser dc Bias (Cathode) (–)
4
Back-facet Monitor Anode (–)
5
Back-facet Monitor Cathode (+)
6
Thermoelectric Cooler (+)1
7
Thermoelectric Cooler (–)1
8
Case Ground
9
Case Ground
10
Case Ground
11
Laser Anode (+) 2
12
RF Laser Input Cathode (–)
13
Laser Anode (+) 2
14
Case Ground
An internal, InGaAs, PIN photodiode functions as the backfacet monitor. The photodiode monitors emission from the
rear facet of the laser and, when used in conjunction with
control circuitry, can control optical power launched into the
fiber. Normally, this configuration is used in a feedback
arrangement to maintain consistent laser output power.
Standard Package
The laser module is fabricated in a 14-pin, hermetic, metal/
ceramic butterfly package that incorporates a bias tee that
separates the dc-bias path from the RF input. The RF input
has a nominal 25 Ω impedance.
The laser module is equipped with Fujikura* polarizationmaintaining fiber (PMF). The fiber is PANDA type and is the
same fiber that is used on Lucent Technologies Microelectronics Group’s lithium niobate modulators. It has a mode
field diameter of 10.5 µm, a cladding diameter of 123 µm—
128 µm, and a loose tube jacketed fiber 900 µm in diameter. The pigtail is terminated with an ST ® ferrule†. Figure 1
shows the orientation of polarization in the fiber.
1. A positive current through the thermoelectric heat pump cools the
laser.
2. Both leads should be grounded for optimum performance.
7
6
–
2
5
+
+
4
3
–
2
TH
TEC
10 kΩ
R1
20 Ω
PACKAGE
GROUNDS
+
8
9
1
–
L1
160 nH
Lucent’s optoelectronic components are being qualified to
rigorous internal standards that are consistent with Telcordia Technologies ‡ TR-NWT-000468. All design and manufacturing operations are ISO§ 9001 certified. The module is
being fully qualified for central office applications.
* Fujikura is a registered trademark of Fujikura Ltd.
† The ST ferrule key is not aligned to slow axis of fiber. Connector is
intended for testing purposes only.
‡ Telcordia Technologies is a trademark of Bell Communications
Research, Inc.
§ ISO is a registered trademark of The International Organization for
Standardization.
Name
10
11
–
12
ISOLATOR
+
13
14
1-567
Top view.
Figure 2. Circuit Schematic
Lucent Technologies Inc.
Data Sheet
March 2000
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections 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
Symbol
Min
Max
Unit
VRLMAX
IFLMAX
TC
Tstg
VRPDMAX
IFPDMAX
—
—
–40
–40
—
—
2
225
70
70
10
2
V
mA
°C
°C
V
mA
* Does not apply to shipping container.
Handling Precautions
Mounting Instructions
Power Sequencing
The minimum fiber bend radius is 1.50 in.
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 guidelines
such as JEDEC Publication No. 108-A
(Dec. 1988).
Lucent employs a human-body model (HBM) for ESDsusceptibility 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 kΩ, capacitance = 100 pF) is widely
used and, therefore, can be used for comparison purposes. The HBM ESD threshold presented here was
obtained using these circuit parameters:
Parameter
Value
Unit
Human-body Model
>400
V
Lucent Technologies Inc.
To avoid degradation in performance, mount the module 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 thermal conductive grease is optional; however, thermal
performance can be improved by up to 5% if conductive 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)
0.118
(3.00)
0.086
(2.18)
0.031 (0.79)
0.140
(3.56)
0.129 (3.28) R
0.041 (1.04)
1-532(C)
Note: Dimensions are in inches and (millimeters).
Figure 3. Fillister Head Screw
3
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Data Sheet
March 2000
Characteristics
Table 2. Electrical Characteristics (at 25 °C laser temperature)
Parameter
Threshold Current
Drive Current Above Threshold
Laser Forward Voltage
Monitor Reverse-bias Voltage*
Monitor Current
Monitor Dark Current
Input Impedance
Thermistor Current
Resistance Ratio†
Thermistor Resistance
TEC Current
TEC Voltage
TEC Capacity
Symbol
ITH
—
VLF
VRMON
IRMON
ID
ZIN
ITC
—
RTH
ITEC
VTEC
∆T
Test Conditions
—
LF = 10 mW
LF = 10 mW (CW)
—
PO = 10 mW (CW)
IF = 0, VRMON = 5 V
—
—
—
TL = 25 °C
L
T = 25 °C, TC = 70 °C
TL = 25 °C, TC = 70 °C
TC = 70 °C
Min
—
—
—
3
0.200
—
—
10
9.1
9.5
—
—
50
Typ
15
—
1.3
5
—
0.01
25
—
9.6
—
—
—
—
Max
40
110
1.8
10
—
0.1
—
100
10.1
10.5
1.0
2.0
—
Unit
mA
mA
V
V
mA
µA
Ω
µA
—
kΩ
A
V
°C
Min
10.0
1529.55
Typ
—
—
Max
—
1610.06
Unit
mW
nm
—
—
2
—
10
–135
MHz
dB/Hz
33
30
20
—
—
—
—
—
—
dB
dB
dB
* Standard operating condition is 5.0 V reverse bias.
† Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C.
Table 3. Optical Characteristics (at 25 °C laser temperature)
Parameter
Peak Optical Output Power
Center Wavelength*
(See Table 4.)
Line Width (3 dB full width)
Relative Intensity Noise
Side-mode Suppression Ratio
Optical Isolation
Optical Polarization Extinction
Ratio†
Symbol
PP
λC
∆λ
RIN
SMSR
—
—
Test Conditions
—
TL = 25 °C
CW Wavelength
CW, PF = 10.0 mW
CW, PF = 10.0 mW,
200 MHz < f < 10 GHz
CW
TC = 0 °C to 75 °C
0 °C to 75 °C
* Custom wavelengths available.
† The ST ferrule key is not aligned to slow axis of fiber. Connector is intended for testing purposes only.
4
Lucent Technologies Inc.
Data Sheet
March 2000
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Outline Diagram
Dimensions are in inches and (millimeters). Tolerances are ±0.005 in. (±0.127 mm).
1.025 (26.04)
PIN 1
0.508 ± 0.008
(12.90 ± 0.2)
0.10 ± 0.002
(0.25 ± 0.064)
0.020 (0.51) TYP
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND DATE CODE IN APPROX. AREA SHOWN
STRAIN
RELIEF
0.036
(0.91)
0.500
(12.70)
0.605
0.350
(15.37)
(8.89)
MAX
0.200
(5.08)
0.078 (1.98)
0.105 (2.67) DIA
TYP (4) PLACES
PIN 14
0.213 (5.40) TYP
0.100 (2.54) TYP
39.37 (1000.00)
MIN
2.03 (51.6)
0.180 (4.56)
0.820 (20.83)
0.700 (17.78)
0.863 (21.91)
0.575 (14.61)
0.260 (6.60)
0.10
(2.5)
0.056 (1.42)
0.365
(9.27)
MAX
1.180 (29.97)
0.030 (0.75)
HEAT SINK
0.215
(5.47)
REF
0.215 (5.45)
1-520.g
Lucent Technologies Inc.
5
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Data Sheet
March 2000
High-Power Product
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. All versions are Class IIIb laser products per IEC* 60825-1:1993. The device has been certified with the FDA under accession number 8720010.
This product complies with 21 CFR 1040.10 and 1040.11.
8 µm/123 µm—128 µm single-mode fiber with 900 µm loose-tube jacketed fiber and connector
Wavelength = 1.5 µm
Maximum power = 40 mW
Because of size constraints, laser safety labeling 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.
* IEC is a registered trademark of The International Electrotechnical Commission.
40 mW
6
1.5 µm
Lucent Technologies Inc.
Data Sheet
March 2000
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Ordering Information
Table 4. Ordering Information
Device Code
Comcode
ITU Frequency
Wavelength
Tolerance
D2525P862
D2525P863
D2525P864
D2525P865
D2525P866
D2525P867
D2525P868
D2525P869
D2525P870
D2525P871
D2525P872
D2525P873
D2525P874
D2525P875
D2525P876
D2525P877
D2525P878
D2525P879
D2525P880
D2525P881
D2525P882
D2525P883
D2525P884
D2525P885
D2525P886
D2525P887
D2525P888
D2525P889
D2525P890
D2525P891
D2525P892
D2525P893
D2525P894
D2525P895
D2525P896
D2525P897
D2525P898
D2525P899
108575085
108575093
108575119
108575127
108575135
108575143
108575150
108575168
108575184
108476227
108476235
108476243
108476250
108476268
108476276
108476284
108476292
108476300
108476318
108476326
108476334
108476342
108476359
108476367
108476375
108476383
108476391
108476409
108476417
108476425
108476433
108476441
108476458
108476516
108476524
108476540
108476557
108476573
186.2
186.3
186.4
186.5
186.6
186.7
186.8
186.9
187.0
187.1
187.2
187.3
187.4
187.5
187.6
187.7
187.8
187.9
188.0
188.1
188.2
188.3
188.4
188.5
188.6
188.7
188.8
188.9
189.0
189.1
189.2
189.3
189.4
189.5
189.6
189.7
189.8
189.9
1610.06
1609.19
1608.33
1607.47
1606.60
1605.74
1604.88
1604.33
1603.17
1602.31
1601.45
1600.60
1599.75
1598.89
1598.04
1597.19
1596.34
1595.49
1594.64
1593.79
1592.95
1592.10
1591.25
1590.41
1589.57
1588.72
1587.88
1587.04
1586.20
1585.36
1584.53
1583.69
1582.85
1582.02
1581.18
1580.35
1579.52
1578.69
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
Lucent Technologies Inc.
7
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Data Sheet
March 2000
Ordering Information (continued)
Table 4. Ordering Information (continued)
8
Device Code
Comcode
ITU Frequency
Wavelength
Tolerance
D2525P900
D2525P901
D2525P902
D2525P903
D2525P904
D2525P905
D2525P906
D2525P907
D2525P908
D2525P909
D2525P910
D2525P911
D2525P912
D2525P913
D2525P914
D2525P915
D2525P916
D2525P17
D2525P18
D2525P19
D2525P20
D2525P21
D2525P22
D2525P23
D2525P24
D2525P25
D2525P26
D2525P27
D2525P28
D2525P29
D2525P30
D2525P31
D2525P32
D2525P33
D2525P34
D2525P35
D2525P36
D2525P37
D2525P38
D2525P39
108476581
108476599
108476615
108476623
108476631
108476649
108476656
108476664
108476672
108476680
108476698
108476706
108476714
108476722
108476730
108512534
108512542
108196098
108196106
108002452
108002460
108002478
108002486
108002494
108002502
108002510
108002528
108002536
108002544
108002551
108002569
108002577
108002585
108002593
108002601
108003039
108003047
108003054
108003062
108003070
190.0
190.1
190.2
190.3
190.4
190.5
190.6
190.7
190.8
190.9
191.0
191.1
191.2
191.3
191.4
191.5
191.6
191.7
191.8
191.9
192.0
192.1
192.2
192.3
192.4
192.5
192.6
192.7
192.8
192.9
193.0
193.1
193.2
193.3
193.4
193.5
193.6
193.7
193.8
193.9
1577.85
1577.02
1576.20
1575.37
1574.54
1573.71
1572.89
1572.06
1571.24
1570.42
1569.59
1568.77
1567.95
1567.13
1566.31
1565.50
1564.68
1563.86
1563.05
1562.23
1561.42
1560.61
1559.79
1558.98
1558.17
1557.36
1556.55
1555.75
1554.94
1554.13
1553.33
1552.52
1551.72
1550.92
1550.12
1549.32
1548.51
1547.72
1546.92
1546.12
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
Lucent Technologies Inc.
Data Sheet
March 2000
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Ordering Information (continued)
Table 4. Ordering Information (continued)
Device Code
Comcode
ITU Frequency
Wavelength
Tolerance
D2525P40
D2525P41
D2525P42
D2525P43
D2525P44
D2525P45
D2525P46
D2525P47
D2525P48
D2525P49
D2525P50
D2525P51
D2525P52
D2525P53
D2525P54
D2525P55
D2525P56
D2525P57
D2525P58
D2525P59
D2525P60
108003088
108003096
108003104
108003112
108003120
108003138
108003146
108003153
108003161
108003179
108003187
108003195
108003203
108003211
108003229
108003237
108003245
108196114
108196122
108196130
108196148
194.0
194.1
194.2
194.3
194.4
194.5
194.6
194.7
194.8
194.9
195.0
195.1
195.2
195.3
195.4
195.5
195.6
195.7
195.8
195.9
196.0
1545.32
1544.53
1543.73
1542.94
1542.14
1541.35
1540.56
1539.77
1538.98
1538.19
1537.40
1536.61
1535.82
1535.04
1534.25
1533.47
1532.68
1531.90
1531.12
1530.33
1529.55
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
±0.4 nm
Lucent Technologies Inc.
9
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
Data Sheet
March 2000
For additional information, contact your Microelectronics Group Account Manager or the following:
INTERNET:
http://www.lucent.com/micro, or for Optoelectronics information, http://www.lucent.com/micro/opto
E-MAIL:
[email protected]
N. AMERICA: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18103
1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106)
ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256
Tel. (65) 778 8833, FAX (65) 777 7495
CHINA:
Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F, Zao Fong Universe Building, 1800 Zhong Shan Xi Road,
Shanghai 200233 P. R. China Tel. (86) 21 6440 0468, ext. 316, FAX (86) 21 6440 0652
JAPAN:
Microelectronics Group, Lucent Technologies 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: MICROELECTRONICS GROUP DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148
Technical Inquiries: OPTOELECTRONICS MARKETING: (44) 1344 865 900 (Ascot UK)
Lucent Technologies 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. No
rights under any patent accompany the sale of any such product(s) or information. ST is a registered trademark of Lucent Technologies Inc.
Copyright © 2000 Lucent Technologies Inc.
All Rights Reserved
March 2000
DS00-073OPTO-1 (Replaces DS00-073OPTO)
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