Photosensitive resin composition for optical waveguide and photocurable film for formation of optical waveguide core layer, as well as optical waveguide using same and mixed-mounting flexible printed wiring board for optical and electrical transmission

Abstract

Provided is an optical waveguide photosensitive resin composition containing a resin component and a photopolymerization initiator, in which the resin component contains an aliphatic resin having a polymerizable substituent as a main component. Accordingly, when, for example, the core layer of an optical waveguide is formed by using the optical waveguide photosensitive resin composition, the optical waveguide has high transparency, and vibration absorption derived from a resin skeleton at a wavelength of 850 nm serving as the wavelength of light propagating through the optical waveguide can be avoided. As a result, a reduction in loss of the optical waveguide can be realized.