Photosensitive resin composition for forming optical waveguide, optical waveguide, and method for forming optical waveguide pattern

摘要

A photosensitive resin composition for forming an optical waveguide comprises, at least, a polymer comprising at least one repeating structural unit represented by the following general formula (1): wherein R¹ represents a hydrogen atom or methyl group; and R² to R⁵ each independently represent a hydrogen atom, a halogen atom or an alkyl group having 1 to 4 carbon atoms, and a photoacid generator. This composition can form an optical waveguide pattern with excellent shape precision and at a low cost, and an optical waveguide of a low propagation loss.