OPTICAL MODULE AND METHOD FOR MANUFACTURING SAME

WIPO Patent Application WO/2018/235381

A1

The present invention implements an optical module having higher coupling efficiency between a substrate-type optical waveguide and an optical fiber than conventional optical modules. A spot size w1 at an end face in a waveguide mode in which waves are guided through a core (111) of a substrate-type optical waveguide (11), and a spot size w2 at an end face in a waveguide mode in which waves are guided through a core (121) of an optical fiber (12) are set so as to satisfy 1