LC151B BOOKHAM [Bookham, Inc.], LC151B Datasheet - Page 3

• Manufacturer Part Number: LC151B
• Description: 4 - 155 Mb/s Single-Mode OSC Laser, 1510 nm
• Manufacturer: BOOKHAM [Bookham, Inc.]

3
Package Outline Drawing and Dimensions
Tolerances ± 0.25 mm
Finish: Gold plate
Instructions for Use
Data Sheet
Pin 1 and Pin 2 Thermistor
The thermistor is used in a control loop in conjunction
with the thermo-electric cooler to maintain the laser
submount temperature at the required value. Operating
current should be less than 100 µA to prevent
selfheating errors.
Pin 3 Laser modulation (-) and bias
The data input (modulation) and bias are both applied
via this pin which has a nominal 25 Ohm
load impedance.
Pin 4 Monitor anode, Pin 5 Monitor cathode
The back facet monitor diode provides a mean power
reference for the laser and is normally operated with a
5 V reverse bias.
Pin 6 TEC (+), Pin 7 TEC (-)
Applying a positive voltage on pin 6 with respect to pin 7
Figure 3: Dimensions diagram.
will cause the internal submount to be cooled relative to
the case temperature.
Reversing the polarity will raise the submount
temperature relative to the case. Care should be taken to
avoid overheating the submount when driving the TEC in
this manner.
The TEC supply should be capable of delivering up to
1.2 A at 2.5 V.
Pin 8, 9, 11, 13 Case ground.
These pins must be grounded in all applications.
Pin 10, 14 N/C
These pins are not connected. They should be grounded
if possible.
Pin 12 Laser (+)
This pin provides the return path for the laser modulation
and bias circuits.