Patent ID: 9031362
Filing Date: 2015-05-12
Classification: G02B,Y10T

Abstract:
1. A method for designing a multimode waveguide device, comprising: providing an initial virtual multimode waveguide structure that supports different optical modes and is structured to have desired optical properties and behavior in guiding the different optical modes; providing a transformation function representing optical properties of a target multimode waveguide structure that is different in structure from the initial virtual multimode waveguide structure and that is to be designed to substantially retain the desired optical properties and behavior of the initial virtual multimode waveguide in guiding the different optical modes in the target multimode waveguide structure; adjusting a geometry, a dimension or an effective refractive index of the target multimode waveguide structure, thus changing the transformation function, to modify the target multimode waveguide structure while substantially retaining the desired optical properties and behavior of the initial virtual multimode waveguide in guiding the different optical modes in the target multimode waveguide structure; and continuing to adjust a geometry, a dimension or an effective refractive index of the target multimode waveguide structure to optimize the transformation function to achieve an optimized target multimode waveguide structure which has a desired structure different from the initial virtual multimode waveguide structure and which substantially retains the desired optical properties and behavior of the initial virtual multimode waveguide in guiding the different optical modes in the optimized target multimode waveguide structure.