Patent ID: 7418166

Claim:
A method for manufacturing a semiconductor device for one of detecting, modulating and emitting light, the semiconductor device including a silicon material over an insulator layer which in turn is over a Si-based substrate, the method comprising: forming a growth region that is isolated from a silicon portion of the silicon material over the substrate, and that extends from a silicon-based seeding area; depositing a semiconductor material on the Silicon-based seeding area and in the growth region; forming a single crystalline material from the deposited semiconductor material by heating and cooling the deposited semiconductor material while directing growth of the semiconductor material from the Silicon-based seeding area and through an opening sufficiently narrow to mitigate crystalline defects; and forming a light-communicating device having a waveguide portion aligned with a portion of the single crystalline material by etching the silicon material over an insulator layer and etching the single crystalline material.