Patent ID: 7635555
Filing Date: 2009-12-22
Classification: G02B,G03F

Abstract:
1. A method for fabricating polymer ridged waveguides by using tilted immersion lithography comprising steps of: [1] preparing step: preparing a silicon base plate, coating a SiO [2] calculating step: by using the Fresnel equations: wherein θ θ θ [3] first tilted immersion lithography step: placing said heated silicon base plate, SiO [4] rotating 180-degree step: rotating said silicon base plate, SiO [5] second tilted immersion lithography step: placing said rotated silicon base plate, SiO [6] finishing step: removing non-exposure potion of said photoresist; forming a polymer ridged waveguides that is the substantially trapezoid zone consisting of said partially overlapped first forming portion and second portion; said polymer ridged waveguides having two end surface with said third tilting angle.