FILM OPTICAL WAVEGUIDE AND METHOD FOR MANUFACTURE THEREOF, AND ELECTRONIC INSTRUMENT DEVICE

摘要

An under clad layer (26) having a concave groove (25) and a flat upper clad layer (30) are provided. A polymer adhesive (27) having a refractive index greater than that of the under clad layer (26) is applied on the under clad layer (26). The polymer adhesive (27) is a mixture of a polymerization initiator and a precursor, comprising a monomer and an oligomer, of a polymer exhibiting a flexural modulus of elasticity of 1,000 MPa after curing and containing a hydrogen bond group in functional groups thereof, wherein the hydrogen bond group is a carbonyl group, an amino group, an imino group, or a hydroxyl group. Then, the polymer adhesive (27) is pressed and spread with the upper clad layer (30), to effect the polymer adhesive (27) and thereby form a core (28) and simultaneously join the under clad layer (26) and the upper clad layer (30) by the polymer adhesive (27), which results in the manufacture of a film optical waveguide being less prone to delamination at the interface between clad layers.