Data
sheet
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Thinking optical solutions
980nm Pump Laser
Module - Grating Stabilised,
400 mW
These lasers are designed as pump sources for erbium doped
fibre amplifier (EDFA) applications. Processes and techniques of
coupling the fibre to the laser allow high output powers that are
very stable with both time and temperature. The grating is
located in the pigtail to stabilise the wavelength.
Devices are available with kink free output powers to 400mW.
The LC95 series pump module utilises a double Fibre Bragg
Grating design for enhanced wavelength and power stability
performance. This product has been designed to ensure
superior wavelength locking over drive current, temperature and
optical feedback changes.
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Features
Double Fibre Bragg grating
stabilisation
High output power, up to 400
mW kink free
Single mode fibre pigtail
Internal thermoelectric heatpump
and monitor photodiode
Hermetically sealed 14 pin
butterfly package
Telcordia GR-468-CORE
in progress
Applications
Low noise erbium doped fibre
amplifiers (EDFAs)
Dense wavelength division
multiplexing (DWDM) EDFAs
CATV Applications
Parameter
Min
Typ
Max
Unit
Threshold current (I
th
)
35
45
mA
Operating drive current (I
f
)
A thru F
650
mA
G thru L
700
Forward voltage
1.9
2.5
V
Peak wavelength (
p)
974
980
nm
Spectrum stability (t = 60 secs)
0.2
nm
Temperature dependence of peak wavelength
0.02
nm/C
Wavelength tolerance
0.5
nm
Monitor detector responsivity
1.0
8
25
A/mW
Monitor dark current
50
nA
Thermistor resistance (at 25C)
9.5
10
10.5
k
Intended laser submount operating temperature
20
25
30
C
Power Stability
Peak-to-peak, T = 60s,
DC to 50KHz sampling, Tc = 25
C
+20mW
0.2
dB
10 20mW
0.5
dB
3.5 10mW
1
dB
Heatpump current (
T = 50C, If = 700 mA)
1.5
A
Heatpump voltage (
T = 50C, If = 700 mA)
2.8
V
Characteristics
Conditions unless otherwise stated:
Case temperature
-20 to +75C
Submount temperature
25C
Monitor diode bias
-5 V
CW operation
Kink free fibre coupled output power:
Wavelength
974 nm
Wavelength
974 nm
LC95A74-20
300mW
LC95B74-20
310mW
LC95C74-20
320mW
LC95D74-20
330mW
LC95E74-20
340mW
LC95F74-20
350mW
LC95G74-20
360mW
LC95H74-20
370mW
LC95J74-20
380mW
LC95K74-20
390mW
LC95L74-20
400mW
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Package Outline Drawing and Dimensions
Grating (flexible)
Module
(leads not shown)
Grating Details
5cm MAX length
(280
m dia. MAX)
Separation
10 +/- 2 cm
150 +/- 10 cm
100 +/- 10 cm
4 x 2.54
6 x 2.54
9
9
MIN
12.7
4.59
0.5 x 0.05
26
30
21
10.1
6
5
4.5
8.2
17.25
15.2
Figure 1: Package Outline Drawing and Dimensions (mm)
Parameter
Min
Max
Unit
Operating temperature
-20
75
C
Storage temperature
-40
85
C
Laser forward current
1000
mA
Laser reverse voltage
2
V
Heatpump current
1.8
A
Lead soldering temperature (10s max)
260
C
Fibre bend radius
30
mm
Absolute Ratings
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Thinking optical solutions
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Thinking optical solutions
Pin #
Description
Pin #
Description
1
Peltier cooler (+)
8
Not connected
2
Thermistor
9
Not connected
3
Monitor anode (-)
10
Laser anode (+)
4
Monitor cathode (+)
11
Laser cathode (-)
5
Thermistor
12
Not connected
6
Not connected
13
Case ground
7
Not connected
14
Peltier cooler (-)
Connections
7 6 5 4 3 2
1
8 9 10 11 12 13 14
Figure 2: Connections
Ordering Information
Order Code No:
LC95A74-20
300mW
LC95B74-20
310mW
LC95C74-20
320mW
LC95D74-20
330mW
LC95E74-20
340mW
LC95F74-20
350mW
LC95G74-20
360mW
LC95H74-20
370mW
LC95J74-20
380mW
LC95K74-20
390mW
LC95L74-20
400mW
The above codes are for a 974 nm device.
Other wavelengths may be supplied on request.
INVISIBLE LASER RADIATION
DO NOT INTO BEAM
OR VIEW DIRECTLY
WITH OPTICAL INSTRUMENTS
CLASS 4 LASER PRODUCT
DANGER
INVISIBLE LASER RADIATION
AVOID DIRECT
EXPOSURE TO BEAM
OUTPUT POWER 500 mW
WAVELENGTH 975 985 nm
Class: IV Laser Product
THIS PRODUCT COMPLIES WITH 21CFR 1040.10
CAUTION
STATIC SENSITIVE DEVICE
OBSER VE PRECAUTIONS
REFERENCE IEC 608251: Edition 1.2
Certificate No. FM 15040
Certificate No. EMS 35100
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REV 1 Feb 2003
Bookham Technology 2003 Bookham & ASOC are registered trademarks of Bookham Technology plc
North America
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USA
Tel: +1 678 482 4021
Fax: +1 678 482 4022
Europe
Bookham Technology plc
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Devon
TQ4 7BE
UK
Tel: +44 (0) 1803 66 2875
Fax: +44 (0) 1803 66 2801
Asia
Bookham Technology plc
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Hong Kong
Tel: +852 (2100) 2249
Fax: +852 (2100) 2585
Sales@bookham.com
Important Notice
Bookham Technology has a policy of
continuous improvement, as a result
certain parameters detailed on this flyer
may be subject to change without notice.
If you are interested in a particular product
please request the available from any
Bookham Technology sales representative.
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