Patent ID: 6650819
Filing Date: 2003-11-18
Classification: G02B,G02F

Abstract:
A method for forming plural waveguide structures in a lithium niobate substrate having a major surface, comprising the steps of:(a) exposing a first region of said major surface to a first proton exchange agent at first proton exchange conditions; (b) annealing said substrate at first anneal conditions; (c) exposing a second region of said major surface different from said first region to a second proton exchange agent at second proton exchange conditions; and (d) annealing said substrate at second anneal conditions; wherein said first proton exchange conditions and said first anneal conditions are selected to produce a first set of optical and physical characteristics in at least a first waveguide structure underlying said first region, and said second proton exchange conditions and said second anneal conditions are selected to produce a second set of optical and physical characteristics in at least a second waveguide structure underlying said second region.