Optical module and method of manufacturing optical module

An optical module comprising:

• a base having
• a first surface facing a first direction, and
• a second surface that faces the first direction and that is away from the first surface in a second direction orthogonal to the first direction;
• an optical element either from which light is output in the second direction or to which light is input in a direction opposite to the second direction, the optical element being provided on the first surface;
• and
• an optical fiber fixing portion including a groove that is recessed from the second surface in a direction opposite to the first direction and that extends in the second direction in the base, the groove being configured to at least partially accommodate a core wire obtained by removing a coating from an optical fiber either to which the light output from the optical element is input or from which the light to be input to the optical element is output,
• wherein in the groove, the core wire is in no contact with the optical fiber fixing portion and an adhesive is interposed between the core wire and the optical fiber fixing portion.

A method of manufacturing an optical module, the method comprising:

• forming a first surface facing a first direction in a base;
• forming, in the base, a second surface that faces the first direction and that is away from the first surface in a second direction orthogonal to the first direction;
• forming an alignment mark fixed to the base;
• forming, in the second surface, a groove that is recessed in a direction opposite to the first direction, extends in the second direction, and is aligned with the alignment mark formed in the second direction;
• providing an optical element on the first surface so as to have a predetermined positional relationship between the optical element and the alignment mark;
• and
• fixing a core wire obtained by removing a coating from an optical fiber to the base with an adhesive while at least partially accommodate the core wire in the groove.