Optische Detektoren und Quellen mit integrierten holographischen optischen Elementen für optoelektronische Verbindungen

摘要

Apparatus for optically interconnecting integrated circuits (202,204) that reduces optical path alignment difficulties and enhances signal quality. Employs one or more holographic optical elements (409, 601; 704) adapted for directing one or more modulated beams of light. Because each holographic optical element is individually aligned with a respective photonic device (406, 408), the apparatus is free from registration run off that is associated with large dimension optical substrates employed in previous optical interconnect schemes. Accordingly, optical path alignment between transmitting photonic devices and receiving photonic devices is preserved. In the preferred embodiment each hologram is integral with the respective photonic device, preferably by etching each hologram into a respective surface of the respective photonic device. Accordingly, in the preferred embodiment, the hologram individually aligned with the second photonic device (408) is integral with a receiving surface (409) of the second photonic device. Similarly, the hologram individually aligned with the first photonic device (406) is integral with an emitting surface (407) of the first photonic device. The hologram integral with the first photonic device (406) directs each of the optical paths followed by the modulated beam of light as it passes from the emitting surface (407) of the first photonic device. Features of the hologram integral first photonic device are etched into the emitting surface and arranged for directing the path of the beam of light at an oblique angle with respect to the emitting surface.