Method for producing an optical waveguide
OwnerSatoru Tomaru, Koji Enbutsu +2inventors
InventorsSATORU TOMARU, KOJI ENBUTSU, MAKOTO HIKITA, SABURO IMAMURA
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Abstract
A film of a polymer obtained by ultraviolet curing a photosensitive substance, which has a reactive oligomer containing at least one epoxy ring as one of components, and which has a viscosity adjusted to 500 cps to 10,000 cps, is used as a core or a cladding. By this measure, an optical waveguide satisfying both of a low price and high performance, and a method for producing the same are provided.
Claims4
An optical waveguide comprising a core or a cladding which is a film of a polymer obtained by ultraviolet curing a photosensitive substance, wherein the photosensitive substance comprises a mixture of two or more of reactive oligomers and a photopolymerization initiator, the reactive oligomers each contains at least one epoxy ring, at least one of the reactive oligomers in the mixture contains an aromatic ring, the refractive index of the polymer can be controlled by changing the content of the at least one reactive oligomer, and the photosensitive substance has a viscosity adjusted to 500 cps to 10,000 cps.
Dependencies are inferred from the claim text.