HP LSC2500-FP Datasheet

2.488 Gb/s DFB Laser Module
with Integral Optical Isolator

Technical Data

LSC2500

Features

• Center Wavelength Between
1535 nm and 1565 nm

• Modulation Capability up to

2.488 Gb/s

• 30 dB Internal Optical
Isolation

• 25 Ω Impedance Matched

• Wide Operating
Temperature Range: -20°C to
+65°C

• Industry Standard Hermetic
14 PIN Butterfly Package

Applications

• Telecommunications

• Fiber Optic Sensors

• Cable Television

• Military Communications
and Control Systems

• Instrumentation

Description

LSC2500 laser modules are
highly reliable fiber optic light
sources operating in the
1550 nanometer band. The
internal DFB lasers are based
upon InGaAs ridge waveguide
Multi Quantum Well technology
and fabricated by the Metal
Organic Vapor Phase Epitaxy
(MOVPE) process, resulting in
long lifetimes and modest
threshold currents.

The LSC2500 package includes a
photodiode for monitoring the
laser output, a thermistor for
monitoring laser heatsink
temperature, and a Peltier effect
thermoelectric cooler (TEC). A

heatsink mounting flange is
incorporated into the industry
standard 14 PIN package.

The LSC2500 also has 30 dB of
optical isolation which is
temperature controlled to
maintain isolation over the full
operating temperature range.

Laser Safety Warning

This device is a Class IIIb (3b) Laser Product. It may emit invisible laser radiation if operated with the fiber pigtail disconnected. To avoid
possible eye damage do not look into an unconnected fiber pigtail during laser operation. Do not exceed specified operating limits.

5965-8213E (4/97)

559

LSC2500 Mechanical Outline

Top View

A

S

B

U

Side View

D

G

∅T

R

I

H

C

Back View

F

J

M

L

K

V

N

E

ALL DIMENSIONS IN MILLIMETERS

P

DIM.

A
B
C
D
E
F
G
H

J
K
L
M
N
P
R
S
T
U
V

I

MIN.

29.6

20.6

12.45

8.4
–
–

5.40
–
–
–
–
–

1500.00
–

4.5

8.8

25.9

2.50
–
–

NOM.

–
–
–
–

0.75

12.0
–

2.54

0.50

0.20

7.0

30.0
–

2.0
–
–
–
–

0.75

17.8

MAX.

30.4

21.1

12.95

9.0
–
–

5.90
–
–
–
–
–
–
–

6.5

9.0

26.1

2.70
–
–

LSC2500 Pin Connections and Block Diagram

Top View

7654321

TEC

8 9 10 11 12 13 14

560

PIN CONNECTIONS

THERMISTOR

1

THERMISTOR

2

LASER DC BIAS

3

MONITOR ANODE

4

MONITOR CATHODE

5

TEC

6

TEC

7

GROUND

8

GROUND

9

NOT CONNECTED

10

GROUND

11

LASER MODULATION

12

GROUND

13

NOT CONNECTED

14