Patent ID: 8034648

Claim:
A method for depositing an InP regrowth layer on an epitaxial base portion of a distributed feedback laser, the method comprising: growing a first portion of the regrowth layer at an initial substrate temperature of approximately 580 degrees Celsius to a thickness between approximately 300 Angstroms and approximately 900 Angstroms; increasing the substrate temperature from the initial substrate temperature to an increased substrate temperature of approximately 660 degrees Celsius; growing a second portion of the regrowth layer at the increased substrate temperature; doping a first part of an uppermost layer of the regrowth layer at a concentration of approximately 8.00*10A17/cm3 at the increased substrate temperature; and doping a second part of the uppermost layer of the regrowth layer at a concentration between approximately 1.90*10A18/cm3 and approximately 2.00*10A18/cm3 at the increased substrate temperature.