Method of manufacturing I/O node in an optical channel waveguide.

摘要

A method of manufacturing a molded optical channel waveguide (11), having a critical internal reflection angle and an exposed surface (17), and affixing a holographic layer (16), having gratings (20) formed therein, in overlying relationship with the exposed surface of the optical waveguide. The gratings being positioned to form an angle (a) with the surfaces of the holographic layer such that light rays incident on an upper surface of the holographic layer and substantially normal thereto are diffracted by the gratings into the optical waveguide. Also, light waves travelling within the waveguide couple outwardly through the holographic layer. Light generators (51) and detectors (52) are mounted to supply light to and receive light from the holographic layer. <IMAGE>