HIGH SPEED HOLOGRAPHIC SWITCH FOR VLSI INTERCONNECT

THIS PROPOSAL IS TO DEMONSTRATE THE FEASIBILITY OF SWITCHABLE HOLOGRAMS IN RAPID (\ NANOSECOND) REPROGRAMMING OF VLSI CHIPS. THE CONCEPT WAS CHOSEN FOR HIGH SPEED, LOW SIZE, LOW COST, LOW POWER CONSUMPTION, AND MINIMUM WIRING. IT WILL RESULT IN HIGH FLEXIBILITY AND VERY RAPID REPROGRAMMING BUT WILL NOT BE AS FLEXIBLE AS A CROSS BAR SYSTEM. THE FINAL SYSTEM SHOULD SERVE REAL NEEDS, E.G. CHIP COMPUTERS, EARLY AND THUS PAVE THE WAY FOR LATER, MORE COMPLICATED SYSTEMS. THE BASIC CONCEPT IS TO ADDRESS IN PARALLEL MANY HOLOGRAMS EACH GIVING A UNIQUE "WIRING DIAGRAM". A SINGLE WIRE TO THE HOLOGRAM OF INTEREST "ACTIVATES" IT. IN PARTICULAR STRONTIUM BARIUM NIOBATE HOLOGRAMS ARE KNOWN TO BE ELECTRONICALLY SWITCHABLE. PHASE I WILL AIMAT THE LOW SIZE, LOW COST ASPECTS OF THE DESIGN AND USE PHOTOGRAPHIC HOLOGRAMS. PHASE II WOULD AIM AT FULL IMPLEMENTATION.