Patent ID: 8078017

Claim:
A method for manufacturing an optical interface module, comprising: forming a lower clad layer on a first surface of a substrate, which is opposite to a second surface of the substrate; forming a core layer on the lower clad layer; forming a first core part having one end and an other end by forming a first set of two grooves in a part of the core layer, the first core part being between the two grooves; forming an upper clad layer on the core layer and in the first set of two grooves; mounting a light-emitting element on the first surface of the substrate; mounting a light-receiving element on the first surface of the substrate; forming a second core part which is optically coupled to the light-emitting element and to the one end of the first core part respectively, by forming a second set of two grooves by laser processing in the upper clad layer and the core layer between the light-emitting element and the one end of the first core part; and forming a third core part which is optically coupled to the light-receiving element and the other end of the first core part respectively, by forming a third set of two grooves by laser processing in the upper clad layer and the core layer between the light-receiving element and the other end of the first core part.