Process for producing polymer optical waveguide
First Claim
1. A process for producing a polymer optical waveguide, comprising the steps of:
- preparing a mold by applying a mold-forming resin layer onto a master template having formed therein a convex portion for the optical waveguide, peeling the layer from the master template to obtain a template, and cutting both ends of the template to expose a concave portion for the optical waveguide that corresponds to the convex portion;
bringing the mold into close contact with a film used for a cladding layer which has good adhesiveness to the mold;
introducing, by capillarity, a UV-curable resin or heat-curable resin which forms a core into the concave portion of the mold by contacting the UV-curable resin or heat-curable resin with one end of the mold with which the film is close contact;
curing the introduced UV-curable resin or heat-curable resin, and removing the mold from the film; and
forming a cladding layer on the film on which the core has been formed, wherein a sectional area, a sectional shape, or both of a sectional area and a sectional shape of the core changes in a longitudinal direction of the core, and both end faces of the core have different areas.
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Accused Products
Abstract
A process for producing a polymer optical waveguide including the steps of: preparing a mold by applying a mold-forming resin layer onto a master template, peeling the layer from the master template to obtain a template, and cutting both ends of the template to expose a concave portion; bringing the mold into close contact with a film used for a cladding layer; introducing, by capillarity, a UV-curable resin or heat-curable resin by contacting the resin with one end of the mold; curing the introduced resin and removing the mold from the film; and forming a cladding layer on film on which the core has been formed, wherein a sectional area, a sectional shape, or both of a sectional area and a sectional shape of the core changes in a longitudinal direction of the core, and both end faces of the core have different areas.
46 Citations
21 Claims
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1. A process for producing a polymer optical waveguide, comprising the steps of:
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preparing a mold by applying a mold-forming resin layer onto a master template having formed therein a convex portion for the optical waveguide, peeling the layer from the master template to obtain a template, and cutting both ends of the template to expose a concave portion for the optical waveguide that corresponds to the convex portion;
bringing the mold into close contact with a film used for a cladding layer which has good adhesiveness to the mold;
introducing, by capillarity, a UV-curable resin or heat-curable resin which forms a core into the concave portion of the mold by contacting the UV-curable resin or heat-curable resin with one end of the mold with which the film is close contact;
curing the introduced UV-curable resin or heat-curable resin, and removing the mold from the film; and
forming a cladding layer on the film on which the core has been formed, wherein a sectional area, a sectional shape, or both of a sectional area and a sectional shape of the core changes in a longitudinal direction of the core, and both end faces of the core have different areas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A polymer optical waveguide comprising a flexible cladding film, a cladding layer which covers the flexible cladding film, and a core body disposed between the flexible cladding film and the cladding layer, wherein the core body comprises a curable resin and has a light receiving portion and a light emitting portion that are mutually different in sectional shape and sectional area.
Specification