| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical waveguide that can easily measure the deviation between a core pattern and an upper clad layer of the optical waveguide or the thickness of the core pattern and upper clad layer.SOLUTION: An optical waveguide 10 includes a lower clad layer 20, a core pattern 30 provided on the lower clad layer 20, and an upper clad layer 40, where the upper clad layer 40 further includes a core pattern marker 35 that is partially overlapped on an upper clad pattern 41 formed into a pattern and provided to partially protrude from the upper clad pattern 41. |
