| 摘要 |
PROBLEM TO BE SOLVED: To reduce a coupling loss between the converter and an optical fiber or an electrooptical mixture board and to make the converter small in size and low in price by providing a substrate having two optical input/output parts and being linked with a guide hole or a guide groove and a high polymer flexible optical waveguide embedded in the guide hole or the guide groove. SOLUTION: A cubic substrate 10 forming an optical path converter has optical input/output parts 11, 12 on two surfaces adjacent to each other, respectively, the optical input/output parts 11, 12 are connected to a guide hole 13, being bent quarter circular-arcuately and extended in the axial direction in the substrate 10, and a high polymer flexible optical waveguide 14 is embedded in the guide hole 13. In the optical path converter, the optical path is converted by 90 deg. with a small radius of curvature between the terminals of the high polymer flexible optical waveguide 14 in the optical input/output parts 11, 12. Consequently, by using the optical path converter and optically coupling both terminals of the high polymer flexible optical waveguide 14 to an external optical member, the high polymer waveguide in which the optical path is converted by 90 deg. within a narrow space is formed. |
