Patent ID: 7358036
Filing Date: 2008-04-15
Classification: G03F,Y10S

Abstract:
1. A method of forming a polymer optical waveguide pattern, comprising the steps of: forming a core layer of a photosensitive composition having a thickness of the core layer which achieves a single-mode optical waveguide that comprises the core layer by a spin-coating method; drying the photosensitive composition for optical waveguides; irradiating said resultant photosensitive composition thin film for optical waveguides with light through a mask; and directly forming a core-ridge pattern by wet etching said photosensitive composition thin film; wherein the photosensitive composition for optical waveguides comprises an organic oligomer and a polymerization initiator, said organic oligomer being a silicone oligomer represented by the following formula (2): wherein X 1 and X 2 may be the same as or different from each other, and denote hydrogen, deuterium, halogen, an alkyl group or an alkoxy group; m is an integer from 1 to 5; x and y designate the proportion of respective units, and y is smaller than x and may be 0; and Z denotes an epoxy group shown in the following formula (I) or (II):