CPC C08L 63/00 (2013.01) [G02B 1/046 (2013.01); G02B 6/1221 (2013.01); C08L 2203/20 (2013.01); C08L 2205/025 (2013.01)] | 8 Claims |
1. A resin composition for optical waveguide cores, the resin composition comprising: liquid epoxy resin; and solid epoxy resin,
wherein a coefficient of variation calculated from a weighted average value of a refractive index of the liquid epoxy resin and a refractive index of the solid epoxy resin is 2.10% or less,
a ratio of the liquid epoxy resin to the entire resin composition is 5 to 23 mass %, and
a difference between an average refractive index of the liquid epoxy resin and an average refractive index of the entire resin composition is 0.04 or less.
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