OPTICAL ELEMENT COUPLING STRUCTURE AND OPTICAL FIBER STRUCTURE

摘要

An optical element coupling structure for coupling an optical fiber to an optical waveguide with a reduced variation of the coupling loss due to the temperature variation of the surrounding environment. The optical element coupling structure (1) for coupling an optical fiber to an optical waveguide comprising an optical fiber (2) and a substrate (6) where an optical waveguide (4) is formed has a groove (8) of a V-shaped cross section formed so that the optical fiber (2) and the optical waveguide (4) are aligned and a recess (10) formed in the groove (8) on the optical waveguide (4) side. The optical fiber (2) is secured to the groove (8) with an adhesive (22). The end (18) of the optical fiber (2) projecting into the recess (10) is coupled to the optical waveguide (4) with a coupling agent (24) placed between them and in the recess (10). ® KIPO & WIPO 2007