Patent ID: 7796852

Claim:
A method comprising: fabricating a center notch within a substrate of an optical wave guide, by dicing the center notch within the substrate of the optical wave guide using a dicing tool; fabricating a bottom cladding layer onto the substrate with the center notch positioned downward, by spincoating an acrylic material onto the substrate and of which the bottom cladding layer is made, using a spincoating tool, and by baking the substrate onto which the acrylic material has been spincoated on a hot plate; fabricating on the bottom cladding layer a core pattern capable of transmitting light therethrough, by: spincoating an acrylic material onto the bottom cladding layer and of which the core pattern is made, using a spincoating tool; baking the substrate onto which the acrylic material and the material have been spincoated is made on a hot plate; aligning the notch with a mask for the core pattern to precisely position the mask for the core pattern relative to the notch; and, photolithographically fabricating the core pattern within the material spincoated on the bottom cladding layer using the mask as has been precisely positioned; and, fabricating an upper cladding layer onto the core pattern of the bottom cladding layer.