| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical waveguide with which a core pattern, an optical path conversion mirror, and an optical fiber mounting groove thereof are highly visible.SOLUTION: An optical waveguide comprises a lower cladding layer, a core pattern, and an upper cladding layer laminated together and has a transparent resin layer formed on one surface on the lower cladding layer side or the upper cladding layer side at least. A surface of the transparent resin layer on a side opposite the optical waveguide side has a surface roughness smaller than that of the one surface of the optical waveguide. |
