Patent ID: 8427738

Claim:
An birefringent phase matching optical semiconductor device for frequency mixing or conversion comprising: a substrate; a first waveguide slab suspended at opposite ends of the slabs at a first distance from the substrate; and a second waveguide slab suspended at opposite ends at a second distance from the substrate, the second waveguide slab parallel to and spaced apart from the first waveguide slab, the first waveguide slab and the second waveguide formed of a type III-V semiconductor material, wherein the first waveguide slab has a thickness in a direction perpendicular to a face of the waveguide slab, and a width in a direction parallel to a face of the waveguide slab, wherein said first waveguide thickness is less than said first waveguide width, and wherein the second waveguide slab has a thickness in a direction perpendicular to a face of the waveguide, and a width in a direction parallel to a face of the waveguide, wherein said second waveguide slab thickness is less than said second waveguide width.