269-B-120-D-14xx-A - Agere Systems, Inc.

269-Type 14xx nm DFB Pump Laser Module

Data Sheet

June 2001

The 269-type DFB pump laser module is designed as a

continuous-wave (CW) optical pump source for erbium-doped

fiber amplifiers.

Features

■Low relative intensity noise (RIN)

■High-coupled rated output power up to 280 mW,

■Wide environmental range

■Field-proven packaging technology

■InGaAsP/InP high-power, strained multiple quan-

tum-well (MQW), distributed-feedback (DFB) laser

chip design

■Internal optical isolator (optional)

■Internal thermoelectric cooler (TEC)

■InGaAs PIN photodetector back-facet monitor

■Single-mode and polarization-maintaining fiber pig-

tails

■Compact, 14-pin butterfly package

■Industry compatible package and pinout

Applications

■Raman pump modules (RPM), copropagating and

counterpropagating

■Erbium-doped fiber amplifiers (EDFA)

Description

The 269-type DFB pump lase r module repres en ts a

family of thermoelectrically cooled, high-power

lasers. These devices achieve stable wa velength

performance within the 1420 nm to 1510 nm range,

over the full operating temperature range. The y are

designed as continuous-wave (CW) optical pump

sources for dense wavelength-division multiplexing

(DWDM) EDFA and Raman applications operating in

the C- and L-bands.

These new high-power DFB products represent a

breakthrough in 14xx nm pump laser technology by

integrating the beneficial characteristics of an exter-

nal FBG laser design (such as stimulated Brillouin

scattering suppression) with the superior relative-

intensity noise (RIN) performance of a DFB laser.

The combination of both characteristics is critical to

enable copropagating Raman pumping, which dis-

tributes gain over the first few kilometers of the trans-

mission fiber. The typical RIN value Agere Systems’

DFB lasers is –158 dB/Hz, a major improvement ov er

comparable external FBG-stabilized lasers with a

typical RIN of –125 dB/Hz. Integrating wavelength

stabilization into the chip improves the stabilization

over operating temperature and thereby eliminates

the need for an external FBG .

The laser modules incorporate a high-power, quan-

tum-well laser chip that achieves fiber powers up to

280 mW.

An integral thermoelectric cooler (TEC) stabilizes the

laser at room temperature and, combined with a her-

metic environment, allows the device to achieve

high-power operation ov er the e xtended temperature

range of 0 °C to 75 °C. An internal InGaAs PIN pho-

todiode, mounted behind the laser diode, functions

as the laser detector and monitors light emissions

from the rear facet of the laser.

The 269-type DFB module is offered in a 14-pin, her-

metic butterfly package.

Data Sheet

269-Type 14xx nm DFB Pump Laser Module June 2001

2Ager e Systems Inc.

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 operational sections of the data sheet. Exposure to absolute maximum ratings for extended

periods can adversely affect device reliability.

Handling Precautions

Electrostatic Discharge

CAUTION: This device is susceptible to damage as a result of electrostatic discharge (ESD). Take proper

precautions during both handling and testing. Follow guidelines suc h as

EIA

* Standar d

EIA

625.

Agere Systems Inc. emplo ys a human-body model (HBM) f or ESD-susceptibility testing and protection-design e v al-

uation. 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 f or comparison pur-

poses. The HBM ESD withstand voltage established for the 269-type laser pump module is ±500 V.

EIA

is a registered trademark of The Electronic Industries Association.

Parameter Symbol Min Max Unit

Operating Case Temperature Range TC075°C

Storage Case Temperature Range Tstg –40 85 °C

Laser Forw ard Bi as (TEC on) :

PO = 120 mW—150 mW

PO = 160 mW—210 mW

PO = 220 mW—280 mW

IF—

—

1000

1500

1900

Laser Revers e Volta ge VR—2V

Photodi ode Reverse Voltage VRMON —20V

TEC Current ITEC —2.2A

TEC Voltage VTEC —5.0V

Temperature Sensor Current ITS —5mA

Laser Diod e Ope rating Chip Temperature TLD —40°C

Data Sheet

June 2001 269-Type 14xx nm DFB Pump Laser Module

Agere Systems Inc.

Electrical/Optical Characteristics

Table 1. Electrical/Optical Characteristics (All performance parameters are specified for IF, OP

, TSET = 25 °C,

TCASE ~ 25 °C, unless otherwise specified.)

Parameter Symbol Conditions Min Typ Max Unit

Operating Optical Power PO— 120 — 280 mW

Wavelength:

Target Wavelength

Center Wavelength λt

λC—

0 °C—70 °C 1420

λt – 1.0 —

—1510

λt + 1.0 nm

RMS S pectral Width:

Single Mode

Multimode

∆λ PO—

—1.0

0.2 5.0

0.3 MHz

BOL Operating Laser Forward Current:

PO = 120 mW

PO = 130 mW

PO = 140 mW

PO = 150 mW

IF, OP BOL —

—

550

600

BOL Operating Laser Forward Current:

PO = 160 mW

PO = 170 mW

PO = 180 mW

PO = 190 mW

PO = 200 mW

IF, OP BOL —

—

650

700

750

800

BOL Operating Laser Forward Current:

PO = 210 mW

PO = 220 mW

PO = 230 mW

PO = 240 mW

PO = 250 mW

PO = 260 mW

PO = 270 mW

PO = 280 mW

IF, OP BOL —

—

850

900

950

1000

1100

EOL Operating Laser Forward Current IF, OP EOL ———1.15 x

IF, OP BOL mA

EOL Laser Diode Forward Voltage VRIF, OP EOL — 2.3 3.0 V

Module Optical Isolation

(optional feature) ISO EOL Over

TCASE RANGE 30 — — dB

Polarization Extinction Ratio PER — 13 — — dB

Relative Intensity Noise RIN PO— –158 –150 dB/Hz

Table 2. Monitor Photodiode Characteristics (All test parameters are specified for IF, OP, TSET = 25 °C,

TCASE ~ 25 °C unless otherwise specified.)

Parameter Symbol Conditions Min Max Unit

Monitor Diode Current IBF — 200 2000 µA

Monitor Diode Dark Current IDVR = –5 V, IF = 0 — 100 nA

Data Sheet

269-Type 14xx nm DFB Pump Laser Module June 2001

4Ager e Systems Inc.

Electrical/Optical Characteristics (continued)

Table 3. TEC and Thermistor Characteristics (All performance parameters are specified for IF, OP, TSET = 25 °C,

unless othe rwi s e speci fied .)

Parameter Symbol Conditions Min Max Unit

TEC Current:

PO = 120 mW

PO = 130 mW

PO = 140 mW

PO = 150 mW

ITEC TSET = 25 °C;

TCASE = 75 °C;

∆T = 50 °C, EOL —

—

1.6

TEC Current:

PO = 160 mW

PO = 170 mW

PO = 180 mW

PO = 190 mW

PO = 200 mW

ITEC TSET = 25 °C;

TCASE = 70 °C;

∆T = 45 °C, EOL —

—

1.7

TEC Current:

PO = 210 mW

PO = 220 mW

PO = 230 mW

PO = 240 mW

PO = 250 mW

PO = 260 mW

PO = 270 mW

PO = 280 mW

ITEC TSET = 25 °C;

TCASE = 65 °C;

∆T = 40 °C, EOL —

—

2.0

TEC Voltage:

PO = 120 mW

PO = 130 mW

PO = 140 mW

PO = 150 mW

VTEC TSET = 25 °C;

TCASE = 75 °C;

∆T = 50 °C, EOL —

—

3.5

TEC Voltage:

PO = 160 mW

PO = 170 mW

PO = 180 mW

PO = 190 mW

PO = 200 mW

VTEC TSET = 25 °C;

TCASE = 70 °C;

∆T = 45 °C, EOL —

—

3.7

TEC Voltage:

PO = 210 mW

PO = 220 mW

PO = 230 mW

PO = 240 mW

PO = 250 mW

PO = 260 mW

PO = 270 mW

PO = 280 mW

VTEC TSET = 25 °C;

TCASE = 65 °C;

∆T = 40 °C, EOL —

—

4.2

Thermistor Resistance RTHERM 25 °C Laser Diode

Set Temperature 9.5 10.5 kΩ

Themistor B Constant B — 3700 4100 K

Data Sheet

June 2001 269-Type 14xx nm DFB Pump Laser Module

Agere Systems Inc.

User Information

* A positive input into this pin cools the laser.

Fiber Characteristics

■Length of fiber pigtail:

— 1.75 m ± 0.25 m

■Standard fiber:

— Cladding OD: 125 µm ± 2 µm

— Acrylate buffer OD: 250 µm ± 15 µm

— Cut off wavelength: <1320 nm

■Polarization-maintaining fiber:

— PANDA

— Cut off wavelength: <1400 nm

— Acrylate buffer: 400 µm

Table 4. Pin Information

Number Connection

1 TE Cooler (+)*

2 Thermistor

3 Monitor Anode (–Bias)

4 Monitor Cathode (+Bias)

5 Thermistor

6 No Connect

7 No Connect

8 No Connect

9 No Connect

10 Laser Anode (+)

11 Laser Cathode (–)

12 No Connect

13 Package Ground

14 TEC Cooler (–)

Mounting and Connections

CA UTION: This device is susceptible to damage as

a result of electrostatic discharge.

Proper precautions should be taken

during both handling and testing.

The base of the laser module (see Outline Diagram)

should be maintained at or below 75 °C (maximum)

during operation. Interfaces between the laser module

base and heat sink must be clean, and the use of a

thermal filler may be necessary.

Mounting Instructions

The minimum fiber bend radius is 1.0 in.

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 flat-

ness must be better than 0.001 in. (25.4 µm). Using

thermal conductive grease is optional; however,

thermal performance may be improved 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.

Figure 1. Circuit Schematic

1-675 (F).i

7654321

8 9 10 11 12 13 14

TH 10 kΩTEC

ISOLATOR

–

+–

(OPTIONAL)

Data Sheet

269-Type 14xx nm DFB Pump Laser Module June 2001

6Ager e Systems Inc.

Outline Diagram

Dimensions are in inches and (millimeters).

1-1065 (F)a

0.10 (0.25)

0.035

(0.91)

0.078

(1.98)

0.213 (5.40) TYP.

0.350

(8.89)

0.500

(12.70)

0.598

(15.19)

MAX.

1.025

(26.04)

0.020

(0.51)

0.100 (2.54) TYP.

TYP.

PIN 1

0.105 (2.667) DIA.

TYP. (4) PLACES

PIN 14

0.030 (0.76)

0.700

(17.78) 0.347

(8.8)

0.820

(20.83)

0.180

(4.57)

0.175

(4.45)

0.215

(5.46)

1.180

(29.97)

0.078

(1.99)

0.178

(4.52)

0.215 ± 0.10

(5.46 ± 2.54)

0.363

(9.23)

0.334 ± 0.005

(8.49 ± 0.005)

Data Sheet

June 2001 269-Type 14xx nm DFB Pump Laser Module

Agere Systems Inc.

Laser Safety Information

Class IIIb Laser Product

FDA/CDRH Class IIIb laser product. All vers ions 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

classified with the FDA under accession number 8720010.

This product complies with 21 CFR 1040.10 and 1040.11.

8.8 µm/125 µm single-mode fiber pigtail (see Fiber Characteristics, page 5).

Wavelength = 1.40 µm—1.52 µm.

Maximum power = 400 mW.

Because of size constraints, laser safety labeling (including an FD A Class IIIb label) is not affix ed 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.

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 exp osure to beam

Class 3B L aser Product IEC-60825M 1993 Max. Output : 400 m W Wavelen gth: 1 .40

—

1.52

Data Sheet

269-Type 14xx nm DFB Pump Laser Module June 2001

For additional information, contact your Agere Systems Account Manager or the following:

INTERNET: http://www.agere.com

E-MAIL: docmaster@micro.lucent.com

N. AMERICA:Agere Systems Inc., 5 55 Union Boulevard, Room 30L-15P-BA, Allentow n, PA 18109-3286

1-800-372-2447, FAX 610-712-4106 ( In CANADA: 1-800-553-2448, FAX 610-712-4106)

ASIA PACIFIC:Agere Systems Si ngapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256

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

CHINA: Agere Systems (Shanghai) Co., Ltd., 33/F Jin Mao Tower, 88 Century Boulevard Pudong, Shanghai 2 0012 1 PRC

Tel. (86) 21 50471212, FAX (86) 21 50472266

JAPAN: Agere Systems Japan Ltd., 7-18, Higashi-Gotan da 2-chome, Shinagawa-ku, Tokyo 141, Japan

Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700

EUROPE: Data Requests: DATALINE: Tel. (44) 7000 582 368, FAX (44) 1189 328 148

Technical Inquiries: OPTOELECTRONICS MARKETING: (44) 1344 865 900 (Ascot UK)

Agere Systems 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.

June 2001

DS01-237OPTO

Ordering Information

Device Code Information

ORDER CODE: X X269 – – XX – X – XXXX –

BASIC PART NUMBER

FIBER

A = NONISOLATED, SMF

CONNECTOR OPTIONS

A = NO CONNECTOR

B = NONISOLATED, PMF

B = SC/APC

C = FC/APC

WAVELENGTH

XXXX nm

C = ISOLATED, SMF

D = ISOLATED, PMF

OPERATING POWER

XX0 mWOPERATING MODE

D = DFB, SINGLE MODE

M = DFB, MULTIMODE