代理机构 |
Westerman, Hattori, Daniels & Adrian, LLP |
代理人 |
Westerman, Hattori, Daniels & Adrian, LLP |
主权项 |
1. A method of manufacturing an optical waveguide, comprising:
forming a core having a pattern on a surface of an under cladding layer; and forming an over cladding layer so as to cover the core by using a mold including a cavity having a mold surface complementary in shape to the over cladding layer, wherein the forming of the over cladding layer includes:
placing the mold with the cavity of the mold positioned upwards,filling the cavity of the mold with a photosensitive resin for the formation of the over cladding layer,after the filling, immersing the core in the photosensitive resin, andexposing part of the photosensitive resin lying in the cavity to light through the mold, while the core is immersed in the photosensitive resin and part of the photosensitive resin spilling out of the cavity is collected in a groove formed in the mold, to cure the part of the photosensitive resin lying in the cavity, thereby forming the over cladding layer, wherein the mold is made of a light-transmissive resin, wherein the mold is produced by placing a mold member in a mold production container, the mold member including a protruding portion identical in shape to the over cladding layer and a ridge portion provided around the protruding portion, filling the container with a light-transmissive resin, curing the light-transmissive resin, then taking the cured light-transmissive resin out of the container, and removing the mold member from the cured light-transmissive resin, whereby a hollow resulting from the removal of the protruding portion serves as the cavity for the formation of the over cladding layer, and a hollow resulting from the removal of the ridge portion serves as the groove configured to collect the part of the photosensitive resin spilling out of the cavity. |