Compact architecture for holographic systems
First Claim
1. An optical holographic memory system, comprising:
- a surface, holding a plurality of modules to form a module array;
at least one laser, being disposed on said surface and producing light to said modules;
each of said modules including an optoelectronic integrated circuit and a holographic medium, said integrated circuit having a light modulator array and a photodetector array;
said light modulator array modulating said light from said laser to record holograms indicative of information from said integrated circuit in said holographic medium; and
said holographic memory system operating to use said light to reconstruct said holograms in said modules and to retrieve said information with said photodetector array.
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Accused Products
Abstract
An architecture for holographic data storage and processing integrates multifunctional silicon-based optoelectronic devices, rewritable holographic material, optical devices and other electro-optical elements in compact and high-performance systems. A dynamic hologram refresher based on optoelectronic integrated circuits has a smart pixel structure including an electrically addressed SLM to write a new data page, a thresholding detector array for readout, and a memory to latch the data from the detector to the modulator in each pixel. In particular, conjugate reconstruction is used in combination with the dynamic hologram refresher to retrieve data from volume multiplexed holograms in the rewritable holographic material.
50 Citations
8 Claims
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1. An optical holographic memory system, comprising:
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a surface, holding a plurality of modules to form a module array; at least one laser, being disposed on said surface and producing light to said modules; each of said modules including an optoelectronic integrated circuit and a holographic medium, said integrated circuit having a light modulator array and a photodetector array; said light modulator array modulating said light from said laser to record holograms indicative of information from said integrated circuit in said holographic medium; and said holographic memory system operating to use said light to reconstruct said holograms in said modules and to retrieve said information with said photodetector array.
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2. A re-writable holographic memory unit, comprising:
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a programmable integrated opto-electronic interface, having a detector array for receiving light signals and data readout and a modulating reflector array for encoding data on an incident light beam, said detector array and said modulating reflector array integrating with each other in said opto-electronic interface; at least one laser, operating to generate a signal beam for writing data in said memory unit and a reference beam for reading and writing data in said memory unit; a holographic storage medium, integrated with said opto-electronic interface, operating in combination with said signal beam and said reference beam to produce and store holograms indicative of information that is fed into said memory unit from said opto-electronic interface; a beam coupling element, being disposed and integrated with said opto-electronic interface and said holographic storage medium, operating in combination with said laser to produce said signal beam propagating towards said opto-electronic interface, said modulating reflector array modulating said signal beam and reflecting said signal beam into said holographic storage medium; and said reference beam, interacting with said holograms in said holographic medium and generating a construction beam encoded with information in said holograms and propagating towards said detector array in said opto-electronic interface, said detector array receiving said construction beam and retrieving said information. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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Specification