980-Type - Agere Systems, Inc.

Preliminary Data Sheet

Apri l 1999

980-Type Ultrahigh-

Reliability Pump Laser Module

The 980-Type Ultrahigh-Reliability Pump Laser Module is ide-

ally suited for fiber amplifier-based optical transmission sys-

tems that require a long-term li fe 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, her-

metic, 14-pin butterfly package

■Single-mode fiber with Bragg Grating (FBG) for

stable operation

■Stable single spatial mode kink-free operation ov er

a wide range of temperatures and currents

Applications

■Undersea optical transmission systems

■Ultrahigh reliability optical communications for mili-

tary systems

Description

The 980-Type Pump Laser Module is a precision,

high-performance, ultrahigh-reliability lightwave com-

ponent 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 back-

facet 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 Pump Laser Module is capable of

providing a wide range of output power in the

974 nm to 984 nm wavelength range for erbium-

doped amplifier (EDFA) system application. The

pump laser module is designed and individually certi-

fied for high-reliability operation and long-term life

expectancy. The 980 nm InGaAs laser chip utilizes a

ridge guide design for high performance and reliabil-

ity. Chip and f acet parameters are optimized for stabi-

lized optical coupling and efficient pumping of the

EDFA. The laser pack age design also includes a

microlensed single-mode fiber and a planar InGaAs

PIN back-f acet photomonitor assembled in a modular

organic-free hermetic package. Laser welding tech-

nology 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 av ailable

with a typical power output range of 20 mW to

70 mW.

980-Type Ultrahigh Preli minar y Data Sheet

Reliability Pump Laser Module April 1999

22 Lucent Technologies Inc.

Description (continued)

The 980-Type Pump Laser Module has been specifi-

cally 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, e xacting manuf acture, and thor-

ough 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,

e xtended qualification test programs can be dev eloped

to focus on customer system requirements.

Based on the results of qualification testing, a certifica-

tion program has been developed to ensure the high-

reliability performance of the devices. Each 980-Type

device undergoes this certification process where the

per formanc e pa r a me t e rs ar e me a su r ed be fore , duri ng ,

and after en vironmental stresses. The certification

results f or each 980-Type Pump Laser Module are then

examined to ensure that only the pump laser modules

that exhibit perf ormance consistent with long-term sys-

tem operation are selected for product.

Each 980-Type is individually serialized for full trace-

ability 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 ongo-

ing basis, small quantities of product from each manu-

facturing lot are retained and tested as part of a

surveillance program for undersea devices. Each sur-

veillance group is subjected to the complete spectrum

of environmental/mechanical stresses required during

the qualification process. The surveillance results are

re viewed 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 qualifica-

tion process combined with an ex tensive and ongoing

surveillance program.

Pinout Information

Top View.

1-675(F).e

Figure 1. Pinout Schematic

7654321

8 9 10 11 12 13 14

Preliminary Data Sheet 980-Type Ultrahigh

April 1999 Reliability Pump Laser Module

Lucent Technologies Inc.

Pinout Information (continued)

Table 1. Pinout Descriptions

Handling Precautions

Note: Dimensions are inches and (millimeters). 1-532(F)

Figure 2. Fillister Head Screw

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 tran-

sients:

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.

Mounting Instructions

The minimum fiber-be nd radiu s is 25 mm.

To avoid degradation in performance, mount the mod-

ule 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 (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 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

pr oper precautions during both handling

and testing. Follow JEDEC Publication

No. 108-A (Dec. 1998).

Lucent employs a human-body model (HBM) and the

field-induced charged-device model (CDM) 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 pur-

poses. The HBM ESD threshhold presented here was

obtained using these circuit parameters:

Pin Connection

1 Chassis Ground

2 Chassis Ground

3 Photodetector Anode

4 Photodete ctor Cath ode

5 Chassis Ground

6 Chassis Ground

7 Chassis Ground

8 Chassis Ground

9 Chassis Ground

10 Pump Laser Anode

11 Pump Laser Cathode

12 Chassis Ground

13 Chassis Ground

14 Chassis Ground

0.118

(3.00)

0.062 (1.58)

0.140

(3.56)

0.031 (0.79)

0.129 (3.28)

0.086

(2.18)

0.041 (1.04)

Parameter Value Unit

Charged-device Model ≥200 V

Human-body Model ≥400 V

980-Type Ultrahigh Preli minar y Data Sheet

Reliability Pump Laser Module April 1999

4Lucent Technologies Inc.

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.

Characteristics

Table 2. Electrical Characteristics

Table 3. Optical Characteristics

* Depending on the exact requirements, there may be two codes (deep and shallow w ater) necessary.

Parameter Symbol Min Max Unit

Storage Temperature Range Tstg –20 60 °C

Operating Temperature Range TOP 040°C

Laser Reve rs e Vo ltage VR—2V

Lase r Forwa rd Current IF— 400 mA

Laser Reve rs e C ur re n t IREV —50µA

Fiber Output Power PF— 150 mW

PIN Monitor Reverse Voltage VPIN —40V

PIN Monitor Forward Current IFPIN —2mA

Pigtail Pull Force (Axial) F — 9 N

Pigtail Bend Radius RP25 — mm

Shock G — 100 G

Vibration (10 Hz to 2000 Hz) VIB —5G

Parameter Symbol Min Max EOL Unit

Operating Voltage

(CW, 70 mW fiber output) VOP —2.22.2V

Operating Current

(CW, 70 mW fiber output) IOP 100 200 ≤250 mA

Monitor Reverse-Bias Voltage VRMON —40—V

Monitor Current I = IOP IRMON 0.3 2.0 2.0 mA

Monitor Dark Current (VDET = –5 V) ID—25—mA

Parameter Symbol Min Max Unit

Optical Output Power Adjustment* PO15 70 mW

Kink Power PK85 — mW

Center Wavelength λc 974 984 nm

Power Tracking (over 25 °C interval) ∆POT— 0.6dB

W eighted RMS Spectral Width ∆λRMS —0.7nm

Output Spectrum Side-mode Suppression ∆λSUPP —20dB

Optical Return Loss at Pigtail (1525 nm—1570 nm) RL 13 dB

Reliability. Over 29 Years at the Max Operating

Conditions of Figure 2. ≤5% failures at ≤25 °C

Preliminary Data Sheet 980-Type Ultrahigh

April 1999 Reliability Pump Laser Module

Lucent Technologies Inc.

Characteristics (continued)

Table 4. Physical Characteristics

Ordering Information

Parameter Description

Pigtail Fiber Type Single-mode Lucent Technologies Optical Fiber Lightguide

Jacket Type Lucent Technologies Minicord, 1.55 mm O.D.

Fiber Length Between FBG and LPM ≤1.1 m

Fiber Length Beyond FBG 1.5 m—2.0 m

Minimum Radius of Curvature 25 mm

Connector Type FC/APC

Device Part Number Comcode

Ultrahigh-Reliability Pump Laser Module 980X TBD

980-Type Ultrahigh Preli minar y Data Sheet

Reliability Pump Laser Module April 1999

6Lucent Technologies Inc.

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 exposu re.

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: Invisibl e laser radiation when

disconnected and fiber removed.

AVOID DIRECT EXPOSURE TO BEAM.

Preliminary Data Sheet 980-Type Ultrahigh

April 1999 Reliability Pump Laser Module

Lucent Technologies Inc.

Outline Diagram

Dimensions are in inches and (millimeters). Tolerances are ±0.005 in. (±0.127 mm).

1-1008(F).r1

0.500

(12.70)

LEAD 7

0.500

(12.70)

0.350

(8.89)

0.020

(0.51)

0.600

(15.24)

0.100

(2.54)

0.212

(5.38)

LEAD 1

0.105

1.024

(26.01)

1.180

(29.97)

2.050

(52.07)

0.078

(1.98)

LEAD 14LEAD 8

0.820

(20.83)

0.655

(16.64)

PINCHED

VACUUM TUBE

PROTECTIVE

CAP

0.20

(0.51)

0.010

(0.25)

0.215

(5.46)

0.120

(3.05) DIA

0.060

(1.52) DIA

3.00

(76.2)

10.0 (254) MIN

JACKET JOIN

59.0—78.0

(1499—1981)

14.0 (356) MIN

FIBER SPLICE

43.0 (1092) MAX

GRATING

CONNECTOR

REF

0.430

(10.92)

0.368

(9.35)

0.215

(5.46)

0.008

(0.20)

0.336

(8.53)

(12.67) DIA

For additional information, contact your Microelectronics Group Account Manager or the following:

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Tel. (65) 778 8833, FAX (65) 777 7495

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Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. N o 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.

April 1999

DS99-112LWP