STRUCTURE FOR COUPLING OPTICAL WAVEGUIDE WITH OPTICAL ELEMENT AND ITS PRODUCTION

摘要

PURPOSE:To execute optical coupling of an optical element and an optical waveguide in an arbitrary optical waveguide position and to rapidly produce an optical coupling system by mounting the optical element on a dielectric substrate with a structure bestriding a prism and the optical waveguide. CONSTITUTION:The dielectric substrate 4 has a groove part 9 having a base parallel with ah optical waveguide plane on a side to be mounted with the optical element 2 and in a position in front of the end of the optical waveguide 1. The prism 8 is mounted in the, groove part 9 in a position where the optical axis of the optical waveguide 1 and the optical axis of the mounted optical element 2 are aligned. The optical element 2 is mounted on the dielectric substrate 4 with the structure bestriding the prism 8 and the optical waveguide 1. The guided light propagating in the optical waveguide 1 is emitted into the air at the end of the optical waveguide 1 and after the guided light is reflected by the prism 8, the guided light receives polarization and the light is taken out of the dielectric substrate 4 perpendicularly upward and arrives at a photodetecting surface 6. The optical coupling is thus executed. As a result, the degree of freedom in the arrangement of the optical coupling system is improved without giving a limitation to the production position thereof.