Method for manufacturing optical waveguide

摘要

A method for manufacturing an optical waveguide (29) in which multiple cores (29a) are embedded in a parallel-arranged fashion within a single cladding (29b), the cores having a refractive index of light different from that of the cladding, the method includes forming the multiple cores in a state where the adjacent cores are connected by a rib (29a4,29a5,29a6), forming the cladding around the rib and the multiple cores by curing a cladding material there around, and a cutting to the rib.