Patent ID: 7741136

Claim:
A method of creating an optical semiconductor device comprising the steps of a) selecting a coherent photonic emitter structure; b) etching a trench of a user definable width in the coherent photonic emitter structure such that the coherent photonic emitter structure is substantially L-shaped and includes a section of user-definable wider width extending from the vertex of the L-shaped semiconductor structure a user-definable length along each leg of the L-shaped semiconductor structure and having a section of user-definable wider width extending from the vertex of the L-shaped coherent photonic emitter structure a user-definable length along each leg of the L-shaped coherent photonic emitter structure; c) depositing a sacrificial spacer layer along a user-definable section of the trench; d) fabricating a waveguide on the sacrificial spacer layer; e) depositing a mask layer; f) patterning a mask layer on the portion of the waveguide deposited within the region associated with the coherent photonic emitter structure having a user-definable wider width as defined in step (b), wherein the mask layer defines a substantially L-shaped waveguide region having a thickness along each leg of the waveguide approximately equal to the width of the trench after deposition of the sacrificial spacer layer at a region of the trench that is not of a user-definable wider width; g) patterning the waveguide, wherein patterning the waveguide further comprises angling the vertex of the waveguide; h) removing the mask layer; and i) removing a user-definable portion of the sacrificial spacer layer.