Integrated optoelectronic device and system with waveguide and manufacturing process thereof

A process for manufacturing an optoelectronic device delimited by a first surface and by a second surface, comprising the steps of:

• forming a body of semiconductor material, formed inside which is at least one optoelectronic component chosen between a detector and an emitter;
• and
• forming an optical path, which is at least in part of a guided type and extends between the first surface and the second surface, said optical path traversing the body;
• and wherein said step of forming an optical path comprises forming the optical path so that the optoelectronic component is optically coupled, through said optical path, to a first portion of free space and a second portion of free space, which are arranged, respectively, above and underneath the first and second surfaces.