A reinforced composite is provided that includes at least one planar fiber reinforcement or fabric formed from a plurality of fibers. The fiber reinforcement or fabric has a first side and a second side. The reinforced composite further includes a chemical treatment coated on at least one of said first side and second side and a matrix material.

A resin composition for optical fiber coating contains a photopolymerizable compound and a photopolymerization initiator, in which the photopolymerizable compound contains a di(meth)acrylate having an oxypropylene group and a di(meth)acrylate having an oxyethylene group, and a mass ratio of a content of the oxypropylene group with respect to a content of the oxyethylene group in the photopolymerizable compound is 0.01 or more and 2.00 or less.

A resin composition for optical fiber coating contains a photopolymerizable compound and a photopolymerization initiator, in which the photopolymerizable compound contains a di(meth)acrylate having an oxypropylene group and a di(meth)acrylate having an oxyethylene group, and a mass ratio of a content of the oxypropylene group with respect to a content of the oxyethylene group in the photopolymerizable compound is 0.01 or more and 2.00 or less.