lc43w4532bb-j28 Avanex Corporation, lc43w4532bb-j28 Datasheet - Page 5

• Manufacturer Part Number: lc43w4532bb-j28
• Description: 4.25gb/s Buried Het Laser
• Manufacturer: Avanex Corporation

Instructions for use – LC43W****B
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 for wavelength. Operating current should be less than 100μA
to prevent self-heating errors.
Pin 3 Laser DC bias (-)
Laser bias current (negative with respect to package ground) is applied via this pin which forms one side of
the bias-T connection to the laser cathode.
Pin 4 Monitor anodes, Pin 5 Common Monitor cathode
The back facet monitor provides a mean power reference for the laser and is normally operated with a 5V
reverse bias.
Pin 6 TEC (+), Pin 7 TEC (-)
Applying a positive voltage on pin 6 with respect to pin 7 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. The TEC supply should be capable of delivering up to 0.9 A at 2.4V.
Pin 8, 9, 11, 13 Case ground
These pins must be grounded in all applications.
Pin 10 N/C
This pin is not connected for the LC43W product and it should be grounded if possible
Pin 12 Laser modulation (-)
The data input (modulation current) is applied via this pin which is a nominal 25 Ohm impedance coplanar
line.
Pin 14 N/C
This pin is not connected. It should be grounded if possible.
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