Data Sheet

June 2001

269-Type 14xx nm DFB Pump Laser Module

5

Agere Systems Inc.

User Information

* A positive input into this pin cools the laser.

Fiber Characteristics

s

Length of fiber pigtail:

— 1.75 m ± 0.25 m

s

Standard fiber:

— Cladding OD: 125

µm ± 2 µm

— Acrylate buffer OD: 250

µm ± 15 µm

— Cut off wavelength: <1320 nm

s

Polarization-maintaining fiber:

— PANDA

— Cut off wavelength: <1400 nm

— Acrylate buffer: 400

µm

Table 4. Pin Information

Pin

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

CAUTION: 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

7

6

54

32

1

8

9

10

11

12

13

14

TH 10 k

Ω

TEC

ISOLATOR

–

+

+

–

(OPTIONAL)