AGERE A1112PC, A1112PB, A1112NC, A1112NB Datasheet

A1112 High-Power 1550 nm DFB Source Lasers

Description

The A1112 1550 nm DFB laser modules are high­power devices in a 14-pin butterfly package with a
thermoelectric cooler and monitor photodiode. The
lasers are designed to be used in conjunction with
commercially available external modulators for high­performance analog and digital applications. Agere
Systems Inc. offers modules with 30 mW or 40 mW
output power coupled into polarization-preserving
fiber. The A1112 operates with positive or negative
bias.

Data Sheet

January 2001

Features

■

High fiber-coupled power, 30 mW and 40 mW

■

Narrow linewidth, <3 MHz

■

Low relative intensity noise, < –162 dB/Hz

■

Coupled to polarization-preserving (PANDA-type
fiber)

Applications

■

Externally modulated CATV transmitters

■

Externally modulated analog and digital communi­cation links

Data Sheet

A1112 High-Power 1550 nm DFB Source Lasers January 2001

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso­lute 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.

Parameter Symbol Min Max Unit

Operating Case Temperature Range T

C

Storage Temperature Range Tstg –40 70 °C
Forward Current (Laser)

I

F

A1112PB, A1112NB

A1112PC, A1112NC
Reverse Voltage (Laser) V
Photodiode Reverse Voltage V
TEC Voltage V
TEC Current

RPD
TEC

I

TEC

R

Cooling

Heating

–20 65 °C

—
—

275
400

mA

mA
—2.0V
—10V
—2.0V

—
—

1.8

1.5

A
A

Electrical/Optical Characteristics

Table 1. Optical Characteristics

Parameter Symbol Conditions Min Max Unit

Optical Output Power

A1112PB, A1112NB

A1112PC, A1112NC
Center Wavelength λ
Linewidth (FWHM) ∆
Side Mode Suppression Ratio SMSR I
Relative Intensity Noise RIN l

Operating Current I
Threshold Current I
Forward Voltage V
Optical Isolation — –20 °C to +65°C 30 — dB
Polarization Extinction Ratio T
Reverse Voltage V

Table 2. Electrical Characteristics

Parameter Symbol Condition Min Max Unit

Monitor Photodiode Reverse Voltage V
Monitor Photodiode Current I
TEC Current I
TEC Voltage V
Thermistor Resistance R

(25 °C Case Temperature)

P

O

C
V

40 MHz to 860 MHz

OP
TH

F

E/TM

R

From fiber end, I

RMPD

MPD

TEC

TEC

TH

∆T = 40 °C — 1.8 A
∆T = 40 °C — 2.2 V

25 °C 9.0 11.0 kΩ

—
—

I

OP

I

OP
OP

,

OP

30
40

—
—

1540 1560 nm

—3MHz
30 — dB
— –162 dBc/Hz

— — 250/350 mA
— — 35/40 mA
— — 2.5/3.0 V

OP

20 — dB

——2.0V

Iop — 10 V

— 40 2000 µA

mW
mW

2

Agere Systems Inc.