Data Sheet
March 2006
Wavelength-Selectable High-Power
D2547P-Type CW DFB Laser Module
Applications
n
n
Telecommunications:
— Dense WDM
— SONET/SDH OC-192/ STM-64
— Extended and ultra-long reach
— Undersea systems
Digital video
Description
Featuring wavelength selection to the DWDM ITU-T grid, the
D2547P Laser Modules are ideally suited for use with external
lithium niobate modulators, and in high-power (20 mW) applications.
Features
n
n
High-performance, multiquantum-well (MQW),
distributed-feedback (DFB) laser
D2547P-Type is offered on 100 GHz ITU grid
wavelengths ranging from 1528.77 nm—
1610.06 nm
n
Polarization-maintaining fiber pigtail
n
For use with lithium niobate modulators
n
High optical power (20 mW, CW)
n
Hermetic, 14-pin package
The D2547P-Type DFB laser module is designed for
use with an external lithium niobate modulator and
also in applications where high power (20 mW) is
required.
The laser comes packaged in an industry-standard
14-pin butterfly module with a polarization-maintaining fiber pigtail.
Temperature-stabilized with a thermoelectric cooler
(TEC) and thermistor, the package is available in C
and L band ITU-T grid wavelengths on a 100 GHz
spacing plan.
D2547P does not contain a wavelength locker, which
is not needed for high-reliability operation in
100GHz-spaced applications. For a 20 mW CW laser
butterfly version with integrated wavelength locker
and available on a 50 GHz grid, refer to the companion product data sheet for D3587P.
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
Data Sheet
March 2006
Description (continued)
Pin Information
Controlled Feedback
Table 1. Pin Descriptions
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.
Controlled Temperature
An integral TEC provides stable thermal characteristics.
The TEC allows for heating and cooling of the laser chip to
maintain a temperature constant as the case temperature
changes from –5 °C to +75 °C. The laser temperature is
monitored by the internal thermistor, which can be used
with external circuitry to control the laser chip temperature.
Pin
1
Thermistor
2
Thermistor
3
Laser dc Bias (Cathode) (–)
4
Back-facet Monitor Anode (–)
5
Back-facet Monitor Cathode (+)
6
TEC (+)1
7
TEC (–)1
8
Case Ground
9
Case Ground
Case Ground
Laser Anode (+)
Laser Input Cathode (–)
Laser Anode (+)
Case Ground
10
11
Controlled Power
12
An InGaAs PIN photodiode functions as the back-facet
power 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.
D2547P-Type
13
14
1. A positive current through the thermoelectric heat pump cools the
laser.
Standard Package
The laser module is fabricated in a 14-pin, hermetic, metal/
ceramic butterfly package.
The laser module is equipped with Fujikura ® polarizationmaintaining fiber (PMF). The fiber is PANDA type it has a
mode field diameter of 10.5 µm, a cladding diameter of
125 µm ± 3 µm, and a tight-buffered coating, all within a
900 µm diameter, loose tube jacket. Figure 1 shows the orientation of polarization in the fiber without the loose tubing.
CyOptics’ optoelectronic components are qualified to rigorous internal standards that are consistent with Telcordia
Technologies ™ TR-NWT-000468. All design and manufacturing operations are ISO ® 9001 certified.
CORE
STRESS ROD
PRINCIPLE POLARIZATION
AXIS
CLADDING
INNER COATING
(SILICON & ACRYLATE)
OUTER COATING
1-771(C).a
Figure 1. Polarization-Maintaining Fiber without Jacket
2
For additional information and latest specifications, see our website: www.cyoptics.com
Data Sheet
March 2006
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
Functional Description
7
–
6
+
5
+
4
3
–
L1
140 nH
TEC
TH
R1
20 Ω
ISOLATOR
NC
+
9
1
10 kΩ
PACKAGE
GROUNDS
8
2
–
10
11
–
+
12
13
14
Top view.
1-567
Figure 2. D2547P Circuit Schematic
1-1129(F)
For additional information and latest specifications, see our website: www.cyoptics.com
3
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
Data Sheet
March 2006
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 DC Reverse Voltage
Laser DC Forward Current
Operating Case Temperature Range
Storage Case Temperature Range 1
Photodiode dc Reverse Voltage
Photodiode dc Forward Current
Thermistor Temperature 3
Thermoelectric Cooler in Heating Mode3
Symbol
Min
Max
Unit
VRLMAX
IFLMAX
TC
Tstg
VRPDMAX
IFPDMAX
—
ITEC
—
—
–5
–40
—
—
—
—
2
225
75
85 2
10
2
100
0.5
V
mA
°C
°C
V
mA
°C
A
1. Does not apply to shipping container.
2. Maximum 2000 hrs. at extreme conditions.
3. To prevent package over-temperature conditions.
Handling Precautions
Mounting Instructions
Power Sequencing
The minimum fiber bend radius is 1.0 in. (25.4 mm).
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).
CyOptics 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 kΩ, capacitance = 100 pF)
is widely used and, therefore, can be used for comparison purposes.
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
1-532(C)
0.041 (1.04)
Note: Dimensions are in inches and (millimeters).
Figure 3. Fillister Head Screw
4
For additional information and latest specifications, see our website: www.cyoptics.com
Data Sheet
March 2006
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
Characteristics
Minimum and maximum values are testing requirements. Typical values are device characteristics and are results
of engineering evaluations; they are for information purposes only and are not part of the testing requirements. All
parameters are beginning of life, unless otherwise specified.
Table 2. D2547P-Type Electrical Characteristics
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Threshold Current
ITH
—
—
15
40
mA
Drive Current
—
LF = 20 mW
—
—
165
mA
VLF
LF = 20 mW (CW)
—
2
2.5
V
VRMON
—
3
5
10
V
Laser Forward Voltage
Monitor Reverse-bias
Voltage1
IRMON
PO = 20 mW (CW)
0.2
—
3.0
mA
Monitor Dark Current
Back-facet Monitor Current:
ID
IF = 0, VRMON = 5 V
—
0.01
0.1
µA
Input Impedance
ZIN
—
—
25
—
Ω
Thermistor Current
ITC
—
10
—
100
µA
Resistance
Ratio2
—
—
9.1
9.6
10.1
—
RTH
TL = 25 °C
9.5
—
10.5
kΩ
TLASER
—
20
—
35
°C
TEC Current
ITEC
TC = 75 °C
—
—
1.2
A
TEC Voltage
VTEC
TC = 75°C
—
—
2.5
V
TEC Capacity
∆T
TC = 75 °C
—
—
55
°C
Thermistor Resistance
Laser Submount Temperature
1 Standard operating condition is 5.0 V reverse bias.
2 Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C.
Table 3. D2547P-Type Optical Characteristics
Symbol
Test Conditions
Min
Typ
Max
Unit
Optical Output Power
Parameter
PP
—
20.0
—
—
mW
Center Wavelength*
(See Ordering Information)
λC
TL = TSET
λC = λITU ± 0.1 nm
1528.77
—
1610.06
nm
Line Width (3 dB full width)
∆λ
CW, PF = 20.0 mW
—
2
10
MHz
SMSR
CW
35
45
—
dB
RIN
CW, PF = 20 mW
200 MHz < f < 10 GHz
—
—
–135
dB/Hz
Optical Isolation
—
TC = 0 °C to 75 °C
30
—
—
dB
Optical Polarization Extinction
Ratio†
—
0 °C to 75 °C
20
—
—
dB
FM Efficiency
FM
PF = 20 mW
—
100
—
MHz/mA
Wavelength Drift (EOL)
∆λC
Tested over
25-year lifetime
—
—
±0.1
nm
Side-mode Suppression Ratio
Relative Intensity Noise
* Custom wavelengths available.
† The ST ferrule key is not aligned to slow axis of fiber. Connector is intended for testing purposes only.
For additional information and latest specifications, see our website: www.cyoptics.com
5
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
Data Sheet
March 2006
Characteristics (continued)
Table 4. D2547P Fiber Pigtail and Optical Connector Characteristics
Parameter
Symbol
Description
Min
Typ
Max
Unit
Pigtail Length
L
Fujikura PANDA or equivalent
polarization-maintaining fiber
1.5
—
—
m
Connector Style
—
ST plug (FC/PC optional)
—
—
—
—
Outline Diagram
Dimensions are in inches and (millimeters). Tolerances are ±0.005 in. (±0.127 mm).
1.025 (26.04)
0.500 (12.70)
MIN
PIN 1
0.10 ± 0.0025
(2.54 ± 0.064)
0.020 (0.51) TYP
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND DATE CODE IN APPROX. AREA SHOWN
STRAIN
RELIEF
0.605
(15.37)
MAX
0.036
(0.91)
~
0.500
(12.70)
0.200
(5.08)
0.350
(8.89)
0.078 (1.98)
0.105 (2.67) DIA
TYP (4) PLACES
PIN 14
0.213 (5.40) TYP
0.100 (2.54) TYP
59.06 (1500.00)
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)
0.375
(9.52)
MAX
0.030 (0.75)
1.180 (29.97)
HEAT SINK
0.215
(5.47)
REF
0.215 (5.45)
1-520.h
6
For additional information and latest specifications, see our website: www.cyoptics.com
Data Sheet
March 2006
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
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 classified Class 3B laser products consistent with IEC ® 60825-1: 1993. This device
family has been classified with the FDA under accession number 8720010. Measurements were made to classify
the product per IEC 60825-1: 1993.
This product complies with 21 CFR 1040.10 and 1040.11.
PANDA-type 10.5 µm/125 µm ±3 µm single-mode fiber with a tight-buffered coating, all within a 900 µm diameter,
loose-tube jacket. Connector is included.
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
DANGER
INVISIBLE LASER RADIATION
IS EMITTED FROM THE END
OF FIBER OR CONNECTOR
Avoid direct exposure to beam
INVISIBLE LASER RADIATION
AVOID DIRECT EXPOSURE TO BEAM
Do not view beam directly with
optical instruments
Wavelength: 1.5 µm
Max. Output: 40 mW,
Class IIIb Laser Product
INVISIBLE LASER RADIATION EMITTED FROM END OF FIBER OR CONNECTOR
Avoid exposure to beam
Class 3R Laser Product
For additional information and latest specifications, see our website: www.cyoptics.com
Max. Output: 40 mW
Wavelength: 1.5 µm
7
Data Sheet
March 2006
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
Ordering Information (continued)
Table 5. D2547P 20 mW CW Laser Without Locker (C-Band) Ordering Information
Device
Code
D2547P61
D2547P60
D2547P59
D2547P58
D2547P57
D2547P56
D2547P55
D2547P54
D2547P53
D2547P52
D2547P51
D2547P50
D2547P49
D2547P48
D2547P47
D2547P46
D2547P45
D2547P44
D2547P43
D2547P42
D2547P41
D2547P40
D2547P39
ITU-T
Center
Frequency Wavelength
(THz)
(nm)
196.1
196.0
195.9
195.8
195.7
195.6
195.5
195.4
195.3
195.2
195.1
195.0
194.9
194.8
194.7
194.6
194.5
194.4
194.3
194.2
194.1
194.0
193.9
1528.77
1529.55
1530.33
1531.12
1531.90
1532.68
1533.47
1534.25
1535.04
1535.82
1536.61
1537.40
1538.19
1538.98
1539.77
1540.56
1541.35
1542.14
1542.94
1543.73
1544.53
1545.32
1546.12
Device
Code
D2547P38
D2547P37
D2547P36
D2547P35
D2547P34
D2547P33
D2547P32
D2547P31
D2547P30
D2547P29
D2547P28
D2547P27
D2547P26
D2547P25
D2547P24
D2547P23
D2547P22
D2547P21
D2547P20
D2547P19
D2547P18
D2547P17
For additional information and latest specifications, see our website: www.cyoptics.com
ITU-T
Center
Frequency Wavelength
(THz)
(nm)
193.8
193.7
193.6
193.5
193.4
193.3
193.2
193.1
193.0
192.9
192.8
192.7
192.6
192.5
192.4
192.3
192.2
192.1
192.0
191.9
191.8
191.7
1546.92
1547.72
1548.51
1549.32
1550.12
1550.92
1551.72
1552.52
1553.33
1554.13
1554.94
1555.75
1556.55
1557.36
1558.17
1558.98
1559.79
1560.61
1561.42
1562.23
1563.05
1563.86
8
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
Data Sheet
March 2006
Ordering Information (continued)
Table 6. D2547P 20 mW CW Laser Without Locker (L-Band) Ordering Information
Device
Code
D2547P916
D2547P915
D2547P914
D2547P913
D2547P912
D2547P911
D2547P910
D2547P909
D2547P908
D2547P907
D2547P906
D2547P905
D2547P904
D2547P903
D2547P902
D2547P901
D2547P900
D2547P899
D2547P898
D2547P897
D2547P896
D2547P895
D2547P894
D2547P893
D2547P892
D2547P891
D2547P890
9
ITU
Center
Frequency Wavelength
(THz)
(nm)
191.6
191.5
191.4
191.3
191.2
191.1
191.0
190.9
190.8
190.7
190.6
190.5
190.4
190.3
190.2
190.1
190.0
189.9
189.8
189.7
189.6
189.5
189.4
189.3
189.2
189.1
189.0
1564.68
1565.50
1566.31
1567.13
1567.95
1568.77
1569.59
1570.42
1571.24
1572.06
1572.89
1573.71
1574.54
1575.37
1576.20
1577.03
1577.86
1578.69
1579.52
1580.35
1581.18
1582.02
1582.85
1583.69
1584.53
1585.36
1586.20
Device
Code
D2547P888
D2547P887
D2547P886
D2547P885
D2547P884
D2547P883
D2547P882
D2547P881
D2547P880
D2547P879
D2547P878
D2547P877
D2547P876
D2547P875
D2547P874
D2547P873
D2547P872
D2547P871
D2547P870
D2547P869
D2547P868
D2547P867
D2547P866
D2547P865
D2547P864
D2547P863
D2547P862
ITU
Center
Frequency Wavelength
(THz)
(nm)
188.8
188.7
188.6
188.5
188.4
188.3
188.2
188.1
188.0
187.9
187.8
187.7
187.6
187.5
187.4
187.3
187.2
187.1
187.0
186.9
186.8
186.7
186.6
186.5
186.4
186.3
186.2
1587.88
1588.73
1589.57
1590.41
1591.26
1592.10
1592.95
1593.79
1594.64
1595.49
1596.34
1597.19
1598.04
1598.89
1599.75
1600.60
1601.46
1602.31
1603.17
1604.03
1604.88
1605.74
1606.60
1607.47
1608.33
1609.19
1610.06
For additional information and latest specifications, see our website: www.cyoptics.com
Wavelength-Selected, High-Power
D2547P-Type Isolated DFB Laser Modules
Data Sheet
March 2006
Fujikura is a registered trademark of Fujikura Ltd.
Telcordia Technologies is a trademark of Telcordia Technologies, Inc.
ISO is a registered trademark of The International Organization for Standardization.
For additional information, contact your CyOptics Account Manager or the following:
INTERNET:
http://www.cyoptics.com
Telephone:
484-397-3800
Fax:
484-397-3592
Email:
mailto:sales@cyoptics.com
Info Email:
mailto:sales@cyoptics.com
The information enclosed (including but not limited to technical specifications, recommendations, and application notes) relating to the products herein is believed to be reliable and accurate and is subject to change without notice. No risk and liability is assumed for use of the products and its applications. CyOptics, Inc. reserves the right to
change without notice design, specification, form, fit or function relating to the products herein.
Copyright © 2005 CyOptics, Inc.
All Rights Reserved
March 2006
DS06-040 (Replaces DS05-040)
