Free-space holographic optical interconnects for board-to-board and chip-to-chip interconnections

Area of Science:

• Optoelectronics
• Optical Engineering
• Computer Engineering

Background:

• Traditional electronic interconnects face limitations in speed and bandwidth for complex systems.
• Optical interconnects offer a promising solution for high-speed data transfer in computing.

Purpose of the Study:

• To present a novel free-space holographic optical interconnect system.
• To demonstrate its capability for both chip-to-chip and board-to-board communication.
• To showcase the versatility of substrate-mode holograms in optical interconnects.

Main Methods:

• Design and implementation of a free-space holographic optical system.
• Utilizing transparent optical substrate-mode holograms for chip-level interconnections.
• Employing free-space optics for board-level interconnections.

Main Results:

• Successful realization of various interconnect functions using substrate-mode holograms.
• Experimental demonstration of a functional three-board holographic interconnect system.
• Validation of the system's potential for high-bandwidth signal communication.

Conclusions:

• The described holographic optical interconnect system offers a viable solution for advanced signal communication.
• Substrate-mode holograms are effective for implementing complex chip-to-chip optical links.
• The free-space approach facilitates scalable board-to-board optical interconnects.