AGERE 980

Preliminary Data Sheet
April 1999
980-Type UltrahighReliability Pump Laser Module
Applications
■
Undersea optical transmission systems
■
Ultrahigh reliability optical communications for military systems
Description
The 980-Type Pump Laser Module is a precision,
high-performance, ultrahigh-reliability lightwave component that provides high output power light, in the
980 nm range. The 980-Type Pump Laser Module is
comprised of a single-mode laser diode, PIN backfacet monitor, microlensed single-mode fiber, and a
Fiber Bragg Grating (FBG) for improved stability, all
encased in a specially designed 14-pin, oxygen free,
butterfly package.
The 980-Type Ultrahigh-Reliability Pump Laser Module is ideally suited for fiber amplifier-based optical transmission systems that require a long-term life expectancy.
Features
■
Extremely high reliability
— Laser-welded packaging technology used to
attain ultrastable long-term operation
— 29-year life
■
Planar InGaAs PIN photodiode monitor for laser
back-facet output
■
Wide range of stable CW optical output power
■
Individually certified for ultrahigh reliability
■
InGaAs ridge waveguide 980 nm single-mode
laser diode
■
Standard low-profile, laser-welded, metal, hermetic, 14-pin butterfly package
■
Single-mode fiber with Bragg Grating (FBG) for
stable operation
■
Stable single spatial mode kink-free operation over
a wide range of temperatures and currents
The 980-Type Pump Laser Module is capable of
providing a wide range of output power in the
974 nm to 984 nm wavelength range for erbiumdoped amplifier (EDFA) system application. The
pump laser module is designed and individually certified for high-reliability operation and long-term life
expectancy. The 980 nm InGaAs laser chip utilizes a
ridge guide design for high performance and reliability. Chip and facet parameters are optimized for stabilized optical coupling and efficient pumping of the
EDFA. The laser package design also includes a
microlensed single-mode fiber and a planar InGaAs
PIN back-facet photomonitor assembled in a modular
organic-free hermetic package. Laser welding technology is used for critical joints to achieve long-term
stability. Data is archived for at least ten years. Each
module is fully characterized and traceable. Long-life
performance and reliability are ensured through
extensive steps of burn-in, overstress, and power
aging. The 980-Type Pump Laser Module is available
with a typical power output range of 20 mW to
70 mW.
980-Type Ultrahigh
Reliability Pump Laser Module
Preliminary Data Sheet
April 1999
Description (continued)
results for each 980-Type Pump Laser Module are then
examined to ensure that only the pump laser modules
that exhibit performance consistent with long-term system operation are selected for product.
The 980-Type Pump Laser Module has been specifically designed for undersea optical amplified very high
capacity transmission systems that require long-term
life expectancy. The extremely stringent reliability
requirements imposed on the 980-Type (necessary to
achieve long-term system life) are accomplished
through careful design, exacting manufacture, and thorough testing. The 980-Type qualification plan consists
of a basic set of electro-optic and mechanical tests
designed to confirm the performance and reliability of
the module over its projected service life under
assumed operating conditions. Custom designed,
extended qualification test programs can be developed
to focus on customer system requirements.
Each 980-Type is individually serialized for full traceability and is shipped with the appropriate test data.
The 980-Type assembly, test, and certification facilities
have all passed the rigorous qualification process
required for all facilities that manufacture devices
employed in undersea applications. Also, on an ongoing basis, small quantities of product from each manufacturing lot are retained and tested as part of a
surveillance program for undersea devices. Each surveillance group is subjected to the complete spectrum
of environmental/mechanical stresses required during
the qualification process. The surveillance results are
reviewed and compiled so that long-term trends can be
studied. The reliability performance of the 980-Type
Pump Laser Module is a result of a rigorous qualification process combined with an extensive and ongoing
surveillance program.
Based on the results of qualification testing, a certification program has been developed to ensure the highreliability performance of the devices. Each 980-Type
device undergoes this certification process where the
performance parameters are measured before, during,
and after environmental stresses. The certification
Pinout Information
Top View.
7
6
5
4
3
2
1
8
9
10
11
12
13
14
1-675(F).e
Figure 1. Pinout Schematic
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Lucent Technologies Inc.
Preliminary Data Sheet
April 1999
980-Type Ultrahigh
Reliability Pump Laser Module
Pinout Information (continued)
Mounting Instructions
Table 1. Pinout Descriptions
The minimum fiber-bend radius is 25 mm.
Pin
Connection
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Chassis Ground
Chassis Ground
Photodetector Anode
Photodetector Cathode
Chassis Ground
Chassis Ground
Chassis Ground
Chassis Ground
Chassis Ground
Pump Laser Anode
Pump Laser Cathode
Chassis Ground
Chassis Ground
Chassis Ground
To avoid degradation in performance, mount the module on the board as follows (see Figure 2):
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).
Mount four #2-56 screws with Fillister heads (M23 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 2 in./lb. of
torque to the screws. To minimize package distortion, it
is recommended that a washer is used above and
beneath each mounting foot.
Electrostatic Discharge
Caution: This is a Class 0 ESD device which is
susceptible to damage as a result of
electrostatic discharge (ESD). Take
proper precautions during both handling
and testing. Follow JEDEC Publication
No. 108-A (Dec. 1998).
Handling Precautions
0.118
(3.00)
0.062 (1.58)
0.086
(2.18)
0.031 (0.79)
0.140
(3.56)
0.129 (3.28)
0.041 (1.04)
Note: Dimensions are inches and (millimeters).
1-532(F)
Figure 2. Fillister Head Screw
Lucent employs a human-body model (HBM) and the
field-induced charged-device model (CDM) 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 threshhold presented here was
obtained using these circuit parameters:
Parameter
Charged-device Model
Human-body Model
Value
Unit
≥200
≥400
V
V
Power Sequencing
Adopt the following sequence for turn-on as a matter of
good practice to avoid the possibility of damage to the
pump laser module from power supply switching transients:
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.
Lucent Technologies Inc.
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980-Type Ultrahigh
Reliability Pump Laser Module
Preliminary Data Sheet
April 1999
Absolute Maximum Ratings
The LPM will stay certified if it is operated at the maximum rating, for brief periods. Exposure to maximum ratings
for extended periods can adversely affect device reliability.
Parameter
Storage Temperature Range
Operating Temperature Range
Laser Reverse Voltage
Laser Forward Current
Laser Reverse Current
Fiber Output Power
PIN Monitor Reverse Voltage
PIN Monitor Forward Current
Pigtail Pull Force (Axial)
Pigtail Bend Radius
Shock
Vibration (10 Hz to 2000 Hz)
Symbol
Min
Max
Unit
Tstg
TOP
VR
IF
IREV
PF
VPIN
IFPIN
F
RP
G
VIB
–20
0
—
—
—
—
—
—
—
25
—
—
60
40
2
400
50
150
40
2
9
—
100
5
°C
°C
V
mA
µA
mW
V
mA
N
mm
G
G
Characteristics
Table 2. Electrical Characteristics
Parameter
Operating Voltage
(CW, 70 mW fiber output)
Operating Current
(CW, 70 mW fiber output)
Monitor Reverse-Bias Voltage
Monitor Current I = IOP
Monitor Dark Current (VDET = –5 V)
Symbol
Min
Max
EOL
Unit
VOP
—
2.2
2.2
V
IOP
100
200
≤250
mA
VRMON
IRMON
ID
—
0.3
—
40
2.0
25
—
2.0
—
V
mA
mA
Table 3. Optical Characteristics
Parameter
Symbol
Optical Output Power Adjustment*
Kink Power
Center Wavelength
Power Tracking (over 25 °C interval)
Weighted RMS Spectral Width
Output Spectrum Side-mode Suppression
Optical Return Loss at Pigtail (1525 nm—1570 nm)
Reliability. Over 29 Years at the Max Operating
Conditions of Figure 2.
PO
PK
λc
∆POT
∆λRMS
∆λSUPP
RL
Min
Max
Unit
15
70
85
—
974
984
—
0.6
—
0.7
—
20
13
≤5% failures at ≤25 °C
mW
mW
nm
dB
nm
dB
dB
* Depending on the exact requirements, there may be two codes (deep and shallow water) necessary.
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Lucent Technologies Inc.
Preliminary Data Sheet
April 1999
980-Type Ultrahigh
Reliability Pump Laser Module
Characteristics (continued)
Table 4. Physical Characteristics
Parameter
Pigtail Fiber Type
Jacket Type
Fiber Length Between FBG and LPM
Fiber Length Beyond FBG
Minimum Radius of Curvature
Connector Type
Description
Single-mode Lucent Technologies Optical Fiber Lightguide
Lucent Technologies Minicord, 1.55 mm O.D.
≤1.1 m
1.5 m—2.0 m
25 mm
FC/APC
Ordering Information
Device
Part Number
Comcode
Ultrahigh-Reliability Pump Laser Module
980X
TBD
Lucent Technologies Inc.
5
980-Type Ultrahigh
Reliability Pump Laser Module
Preliminary Data Sheet
April 1999
Class IIIb Laser Product
This product complies with 21 CFR 1040.10 and 1040.11.
Single-mode connector
Wavelength = 0.98 µm
Maximum power = 70 mW
Because of size constraints, labeling is not affixed to the module but is contained in 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
AVOID DIRECT EXPOSURE TO BEAM.
Indium Gallium Arsenide Laser
70 mW Maximum Output @ 0.98 µm
Class IIIb Laser Product
Complies with 21 CFR 1040.10 and 1040.11
DANGER: Invisible laser radiation when
disconnected and fiber removed.
AVOID DIRECT EXPOSURE TO BEAM.
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Lucent Technologies Inc.
Lucent Technologies Inc.
0.20
(0.51)
0.010
(0.25)
PROTECTIVE
CAP
PINCHED
VACUUM TUBE
0.500
(12.70)
0.500
(12.70)
0.350
(8.89)
0.655
(16.64)
0.820
(20.83)
LEAD 8
LEAD 7
0.020
(0.51)
1.024
(26.01)
1.180
(29.97)
0.100
(2.54)
0.078
(1.98)
0.105
(12.67) DIA
0.215
(5.46)
0.120
(3.05) DIA
0.060
(1.52) DIA
3.00
(76.2)
43.0 (1092) MAX
GRATING
14.0 (356) MIN
FIBER SPLICE
LEAD 14
LEAD 1
0.212
(5.38)
10.0 (254) MIN
JACKET JOIN
2.050
(52.07)
0.600
(15.24)
0.336
(8.53)
0.008
(0.20)
0.368
(9.35)
0.430
(10.92)
0.215
(5.46)
CONNECTOR
REF
59.0—78.0
(1499—1981)
Preliminary Data Sheet
April 1999
980-Type Ultrahigh
Reliability Pump Laser Module
Outline Diagram
Dimensions are in inches and (millimeters). Tolerances are ±0.005 in. (±0.127 mm).
1-1008(F).r1
7
For additional information, contact your Microelectronics Group Account Manager or the following:
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docmaster@micro.lucent.com
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Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700
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Data Requests: MICROELECTRONICS GROUP DATALINE: Tel. (44) 1189 324 299, FAX (44) 1189 328 148
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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.
Copyright © 1999 Lucent Technologies Inc.
All Rights Reserved
April 1999
DS99-112LWP