OPTICAL WAVEGUIDE DEVICE AND METHOD FOR PACKAGING OPTICAL WAVEGUIDE

摘要

PURPOSE:To realize optical axis alignment only by fitting a waveguide chip into a recessed part and arranging an optical fiber in a groove part and to realize optical coupling, by forming the groove part in which an optical waveguide and the optical axis of the optical fiber coincide in a state where the waveguide chip is fitted on a substrate. CONSTITUTION:The titled device includes the waveguide chip 1 on which the optical waveguide 3 is formed and the substrate 2 having the recessed part 4 in which the waveguide chip 1 is fitted, and the groove parts 5A-5C are formed on the substrate 2. In other words, the groove parts 5A-5C are provided with width in which the cores of the optical fibers 6A-6C coincide with the end face of the optical waveguide 3 when the optical fibers 6A-6C are arranged at the position of a pattern including a line in which the optical waveguide 3 is extended virtually to the substrate 2 side in its center part at the state where the waveguide chip 1 is fitted in the recessed part 4. In such a way, only by fitting the waveguide chip 1 in the recessed part 4 of the substrate 2 and arranging the optical fibers 6a-6C on the groove parts 5A-5C, it is possible to perform the optical axis alignment inevitably based on the function of the depth of the groove parts 5A-5C and the existence of the optical waveguide 3 in a longitudinal direction.