| 摘要 |
PURPOSE:To provide the multilayered optical circuit board where the optical waveguide in an upper layer and that in a lower layer are connected in an arbitrary position of an optical waveguide pattern. CONSTITUTION:With respect to the multilayered optical circuit board where plural unit optical circuit boards consisting of optical waveguides and clads are laminated, a part of a unit optical circuit board A of the upper layer is provided with at least one optical waveguide 2b and forms an upper layer curved part 5 curved downward in the lengthwise direction of the optical waveguide, and a part of a unit optical circuit board B of the lower layer is provided with at least one optical waveguide 4b and forms a lower curved part 7 curved upward in the lengthwise direction of the optical waveguide, and an end part 5d of the upper layer curved part 5 and an end part 7d of the lower layer curved part 7 are made to butt to each other, the optical waveguide 2b of the upper layer curved part 5 and the optical waveguide 4b of the lower curved part 7 are connected to form an optical waveguide connection part and spacers 10a and 10b are filled in the upper space and the lower space formed by the upper layer curved part 5 and the lower layer curved part 7 respectively. |
