Method for manufacturing optical waveguide

摘要

A resin layer (13) that flows to be extended on the surface of cores (12) and then a concave-shaped mold (16) having a vent hole (15) is pressed to discharge bubbles (14) contained in the resin layer (13) to the outside through the vent hole (15). In such a manner, the bubbles (14) remaining on the periphery of the cores (12) can be effectively reduced. As a result, a method for manufacturing an optical waveguide with high light transmission efficiency is obtained.