D2547P-Type Datasheet by Broadcom Limited

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/\ CYCPTICS
Wavelength-Selectable High-Power
D2547P-Type CW DFB Laser Module
Data Sheet
March 2006
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) appli-
cations.
Features
nHigh-performance, multiquantum-well (MQW),
distributed-feedback (DFB) laser
nD2547P-Type is offered on 100 GHz ITU grid
wavelengths ranging from 1528.77 nm—
1610.06 nm
nPolarization-maintaining fiber pigtail
nFor use with lithium niobate modulators
nHigh optical power (20 mW, CW)
nHermetic, 14-pin package
Applications
nTelecommunications:
— Dense WDM
— SONET/SDH OC-192/ STM-64
— Extended and ultra-long reach
— Undersea systems
nDigital video
Description
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-maintain-
ing 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 compan-
ion product data sheet for D3587P.
Wavelength-Selected, High-Power Data Sheet
D2547P-Type Isolated DFB Laser Modules March 2006
22 For additional information and latest specifications, see our website: www.cyoptics.com
Description (continued)
Controlled Feedback
The module contains an internal optical isolator that sup-
presses optical feedback in laser-based, fiber-optic sys-
tems. 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.
Controlled Power
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.
Standard Package
The laser module is fabricated in a 14-pin, hermetic, metal/
ceramic butterfly package.
The laser module is equipped with Fujikura ® polarization-
maintaining 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 ori-
entation of polarization in the fiber without the loose tubing.
CyOptics’ optoelectronic components are qualified to rigor-
ous internal standards that are consistent with Telcordia
Technologies TR-NWT-000468. All design and manufac-
turing operations are ISO ® 9001 certified.
Figure 1. Polarization-Maintaining Fiber without Jacket
Pin Information
1. A positive current through the thermoelectric heat pump cools the
laser.
CORE
STRESS ROD
PRINCIPLE POLARIZATION
AXIS
CLADDING
INNER COATING
OUTER COATING
(SILICON & ACRYLATE)
1-771(C).a
Table 1. Pin Descriptions
Pin D2547P-Type
1 Thermistor
2 Thermistor
3 Laser dc Bias (Cathode) (–)
4 Back-facet Monitor Anode (–)
5 Back-facet Monitor Cathode (+)
6TEC (+)
1
7TEC ()
1
8 Case Ground
9Case Ground
10 Case Ground
11 Laser Anode (+)
12 Laser Input Cathode (–)
13 Laser Anode (+)
14 Case Ground
WéF/Xa
For additional information and latest specifications, see our website: www.cyoptics.com 3
Data Sheet Wavelength-Selected, High-Power
March 2006 D2547P-Type Isolated DFB Laser Modules
Functional Description
Top view.
Figure 2. D2547P Circuit Schematic
1-567
TEC
L1
140 nH
ISOLATOR
R1
20
PACKAGE
GROUNDS
–+ +–
+–+
76 54 32 1
8 9 10 11 12 13
TH
10 k
NC
14
1-1129(F)
Laser DC Reverse Voltage 7 2 V Laser DC Forward Current 7 225 mA Operating Case Temperature Range 75 75 ”C Storage Case Temperature Range‘ 710 85 ”C Photodiode dc Reverse Voltage 7 10 V Photodiode dc Forward Current 7 2 mA Thermistor Temperature 7 100 ”C Thermoelectric Cooter in Heattng ModeJ 7 0.5 A
4For additional information and latest specifications, see our website: www.cyoptics.com
Wavelength-Selected, High-Power Data Sheet
D2547P-Type Isolated DFB Laser Modules March 2006
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 operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
1. Does not apply to shipping container.
2. Maximum 2000 hrs. at extreme conditions.
3. To prevent package over-temperature conditions.
Parameter Symbol Min Max Unit
Laser DC Reverse Voltage VRLMAX —2 V
Laser DC Forward Current IFLMAX 225 mA
Operating Case Temperature Range TC–5 75 °C
Storage Case Temperature Range 1Tstg –40 85 2°C
Photodiode dc Reverse Voltage VRPDMAX —10 V
Photodiode dc Forward Current IFPDMAX —2 mA
Thermistor Temperature 3 100 °C
Thermoelectric Cooler in Heating Mode3ITEC —0.5 A
Handling Precautions
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 han-
dling 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 evalu-
ation. ESD voltage thresholds are dependent on the
critical parameters used to define the model. A stan-
dard HBM (resistance = 1.5 k, capacitance = 100 pF)
is widely used and, therefore, can be used for compari-
son purposes.
Mounting Instructions
The minimum fiber bend radius is 1.0 in. (25.4 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 conduc-
tive 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 Out-
line 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.
Note: Dimensions are in inches and (millimeters).
Figure 3. Fillister Head Screw
0.118
(3.00)
0.062 (1.58)
0.140
(3.56)
0.031 (0.79)
0.129 (3.28) R
0.086
(2.18)
0.041 (1.04)
1-532(C)
For additional information and latest specifications, see our website: www.cyoptics.com 5
Data Sheet Wavelength-Selected, High-Power
March 2006 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.
1 Standard operating condition is 5.0 V reverse bias.
2 Ratio of thermistor resistance at 0 °C to thermistor resistance at 50 °C.
* Custom wavelengths available.
† The ST ferrule key is not aligned to slow axis of fiber. Connector is intended for testing purposes only.
Table 2. D2547P-Type Electrical Characteristics
Parameter Symbol Test Conditions Min Typ Max Unit
Threshold Current ITH ——1540mA
Drive Current LF = 20 mW 165 mA
Laser Forward Voltage VLF LF = 20 mW (CW) 2 2.5 V
Monitor Reverse-bias Voltage1VRMON —3510V
Back-facet Monitor Current: IRMON PO = 20 mW (CW) 0.2 3.0 mA
Monitor Dark Current IDIF = 0, VRMON = 5 V 0.01 0.1 µA
Input Impedance ZIN ——25
Thermistor Current ITC —10100µA
Resistance Ratio2——9.19.610.1
Thermistor Resistance RTH TL = 25 °C 9.5 10.5 k
Laser Submount Temperature TLASER —2035°C
TEC Current ITEC TC = 75 °C 1.2 A
TEC Voltage VTEC TC = 75°C 2.5 V
TEC Capacity TT
C = 75 °C 55 °C
Table 3. D2547P-Type Optical Characteristics
Parameter Symbol Test Conditions Min Typ Max Unit
Optical Output Power PP—20.0mW
Center Wavelength*
(See Ordering Information)
λCTL = 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
Side-mode Suppression Ratio SMSR CW 35 45 dB
Relative Intensity Noise 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) ∆λCTested over
25-year lifetime
——±0.1 nm
T J11 fi/ UIJIJUU/ H‘ I] I]
6For additional information and latest specifications, see our website: www.cyoptics.com
Wavelength-Selected, High-Power Data Sheet
D2547P-Type Isolated DFB Laser Modules March 2006
Characteristics (continued)
Outline Diagram
Dimensions are in inches and (millimeters). Tolerances are ±0.005 in. (±0.127 mm).
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)
1-520.h
0.180 (4.56)
HEAT SINK
0.215 (5.45)
0.056 (1.42)
0.030 (0.75)
59.06 (1500.00)
MIN
0.10
(2.5)
0.260 (6.60)
0.215
(5.47)
REF
0.036
(0.91)
PIN 1
0.078 (1.98)
0.100 (2.54) TYP
0.105 (2.67) DIA
TYP (4) PLACES
0.020 (0.51) TYP
0.500 (12.70)
MIN
STRAIN
RELIEF
PIN 14
TRADEMARK, CODE, LASER SERIAL NUMBER,
AND DATE CODE IN APPROX. AREA SHOWN
0.200
(5.08)
~
1.025 (26.04)
0.10 ± 0.0025
(2.54 ± 0.064)
0.213 (5.40) TYP
0.500
(12.70)
0.350
(8.89)
0.605
(15.37)
MAX
2.03 (51.6)
0.863 (21.91)
0.575 (14.61)
0.820 (20.83)
0.700 (17.78)
0.375
(9.52)
MAX
1.180 (29.97)
A DANGER INVISIBLE LASER RADIATION IS EMITTED FROM THE END OF FIBER on CONNECTOR Avoid direct exposure Io beam Do nni view beam diieciiy with opiicai insirumems
For additional information and latest specifications, see our website: www.cyoptics.com 7
Data Sheet Wavelength-Selected, High-Power
March 2006 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
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 3R Laser Product Max. Output: 40 mW Wavelength: 1.5
µ
m
DANGER
INVISIBLE LASER RADIATION
Max. Output: 40 mW,
Class IIIb Laser Product
AVOID DIRECT EXPOSURE TO BEAM
Wavelength: 1.5
µ
m
For additional information and latest specifications, see our website: www.cyoptics.com 8
Data Sheet Wavelength-Selected, High-Power
March 2006 D2547P-Type Isolated DFB Laser Modules
Ordering Information (continued)
Table 5. D2547P 20 mW CW Laser Without Locker (C-Band) Ordering Information
Device
Code
ITU-T
Frequency
(THz)
Center
Wavelength
(nm)
Device
Code
ITU-T
Frequency
(THz)
Center
Wavelength
(nm)
D2547P61 196.1 1528.77 D2547P38 193.8 1546.92
D2547P60 196.0 1529.55 D2547P37 193.7 1547.72
D2547P59 195.9 1530.33 D2547P36 193.6 1548.51
D2547P58 195.8 1531.12 D2547P35 193.5 1549.32
D2547P57 195.7 1531.90 D2547P34 193.4 1550.12
D2547P56 195.6 1532.68 D2547P33 193.3 1550.92
D2547P55 195.5 1533.47 D2547P32 193.2 1551.72
D2547P54 195.4 1534.25 D2547P31 193.1 1552.52
D2547P53 195.3 1535.04 D2547P30 193.0 1553.33
D2547P52 195.2 1535.82 D2547P29 192.9 1554.13
D2547P51 195.1 1536.61 D2547P28 192.8 1554.94
D2547P50 195.0 1537.40 D2547P27 192.7 1555.75
D2547P49 194.9 1538.19 D2547P26 192.6 1556.55
D2547P48 194.8 1538.98 D2547P25 192.5 1557.36
D2547P47 194.7 1539.77 D2547P24 192.4 1558.17
D2547P46 194.6 1540.56 D2547P23 192.3 1558.98
D2547P45 194.5 1541.35 D2547P22 192.2 1559.79
D2547P44 194.4 1542.14 D2547P21 192.1 1560.61
D2547P43 194.3 1542.94 D2547P20 192.0 1561.42
D2547P42 194.2 1543.73 D2547P19 191.9 1562.23
D2547P41 194.1 1544.53 D2547P18 191.8 1563.05
D2547P40 194.0 1545.32 D2547P17 191.7 1563.86
D2547P39 193.9 1546.12
9For additional information and latest specifications, see our website: www.cyoptics.com
Wavelength-Selected, High-Power Data Sheet
D2547P-Type Isolated DFB Laser Modules March 2006
Ordering Information (continued)
Table 6. D2547P 20 mW CW Laser Without Locker (L-Band) Ordering Information
Device
Code ITU
Frequency
(THz)
Center
Wavelength
(nm)
Device
Code ITU
Frequency
(THz)
Center
Wavelength
(nm)
D2547P916 191.6 1564.68 D2547P888 188.8 1587.88
D2547P915 191.5 1565.50 D2547P887 188.7 1588.73
D2547P914 191.4 1566.31 D2547P886 188.6 1589.57
D2547P913 191.3 1567.13 D2547P885 188.5 1590.41
D2547P912 191.2 1567.95 D2547P884 188.4 1591.26
D2547P911 191.1 1568.77 D2547P883 188.3 1592.10
D2547P910 191.0 1569.59 D2547P882 188.2 1592.95
D2547P909 190.9 1570.42 D2547P881 188.1 1593.79
D2547P908 190.8 1571.24 D2547P880 188.0 1594.64
D2547P907 190.7 1572.06 D2547P879 187.9 1595.49
D2547P906 190.6 1572.89 D2547P878 187.8 1596.34
D2547P905 190.5 1573.71 D2547P877 187.7 1597.19
D2547P904 190.4 1574.54 D2547P876 187.6 1598.04
D2547P903 190.3 1575.37 D2547P875 187.5 1598.89
D2547P902 190.2 1576.20 D2547P874 187.4 1599.75
D2547P901 190.1 1577.03 D2547P873 187.3 1600.60
D2547P900 190.0 1577.86 D2547P872 187.2 1601.46
D2547P899 189.9 1578.69 D2547P871 187.1 1602.31
D2547P898 189.8 1579.52 D2547P870 187.0 1603.17
D2547P897 189.7 1580.35 D2547P869 186.9 1604.03
D2547P896 189.6 1581.18 D2547P868 186.8 1604.88
D2547P895 189.5 1582.02 D2547P867 186.7 1605.74
D2547P894 189.4 1582.85 D2547P866 186.6 1606.60
D2547P893 189.3 1583.69 D2547P865 186.5 1607.47
D2547P892 189.2 1584.53 D2547P864 186.4 1608.33
D2547P891 189.1 1585.36 D2547P863 186.3 1609.19
D2547P890 189.0 1586.20 D2547P862 186.2 1610.06
Wavelength-Selected, High-Power Da‘a Sheet 6 CYDFTICS
Wavelength-Selected, High-Power Data Sheet
D2547P-Type Isolated DFB Laser Modules March 2006
Copyright © 2005 CyOptics, Inc.
All Rights Reserved
March 2006
DS06-040 (Replaces DS05-040)
The information enclosed (including but not limited to technical specifications, recommendations, and application notes) relating to the products herein is believed to be reli-
able 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.
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
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.

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