Resin Composition for Optical Material, Resin Film for Optical Material and Optical Waveguide Using Same

2) A resin composition for an optical material, comprising:

• (B) a photopolymerizable compound that is fluorene di(meth)acrylate represented by the following general formula (I);
• and
• (C) a photopolymerization initiator,
• wherein X is represented by the following formula (II);
• Y is hydrogen or a methyl group;
• and m and n are each an integer of 1 to 20;
• wherein R1 to R16 independently represent hydrogen, an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkoxycarbonyl group having 2 to 7 total carbon atoms, an aryl group having 6 to 10 carbon atoms, or an aralkyl group having 7 to 9 carbon atoms.

23) A method of fabricating a flexible optical waveguide, comprising:

• a first step of curing a cladding layer in a resin film for forming a cladding layer composed of the resin for forming a cladding layer and a base material film to form a cladding layer;
• a second step of laminating a resin film for forming a core layer on the cladding layer to laminate a core layer;
• a third step of exposing the core layer to light to develop to form a core pattern of an optical waveguide;
• and
• a fourth step of laminating a resin film for forming a cladding layer on the core pattern and curing the resin for forming a cladding layer.