Optical waveguide, optical module, and method for producing same module

摘要

An optical module of the present invention includes a first substrate (1), a second substrate (2), a PD (3), a LD (4), and an optical fiber (5). The first substrate 1 has a first optical waveguide core (1c) formed therein. The second substrate (2) has a second optical waveguide core (2c) formed therein. The first optical waveguide core (1c) and the second optical waveguide core (2c) form an optical connecting portion where the first substrate (1) and the second substrate (2) are bonded to each other. The LD (4) is capable of transmitting an optical signal via the second optical waveguide core (2c) and the optical fiber (5). The PD (3) is capable of receiving an optical signal which enters the second optical waveguide core (2c) from the optical fiber (5), and propagates through the first optical waveguide core (1c) via the optical connecting portion formed between the first optical waveguide core (1c) and the second optical waveguide core (2c).