Patent ID: 7931831
Filing Date: 2011-04-26
Classification: G02F

Abstract:
1. A method of producing a device comprising an optical waveguide substrate and a supporting body, said optical waveguide substrate comprising a channel optical waveguide with a periodic domain inversion structure formed therein, the method comprising the steps of: applying a voltage on an interdigitated electrode provided on a first main face of a single-domain ferroelectric single crystal substrate to form a periodic domain inversion structure; then removing the interdigitated electrode from the first main face of the ferroelectric single crystal substrate; then adhering the first main face of the ferroelectric single crystal substrate to the supporting body; then thinning the ferroelectric single crystal substrate from a second main face of the ferroelectric single crystal substrate to provide the optical waveguide substrate; and then forming the channel optical waveguide in the optical waveguide substrate, wherein a projected location P