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Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display
Published on: January 14, 2020
Content-addressable data storage by use of volume holograms
G W Burr1, S Kobras, H Hanssen
1IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA. burr@almaden.ibm.com
Applied Optics
|March 8, 2008
Summary
This study presents a holographic content-addressable data storage system. It achieves high search fidelity for digital data using optical correlation and advanced signal processing.
Area of Science:
- Optics and Photonics
- Data Storage Technologies
- Computer Science
Background:
- Volume holograms store data as optical interference patterns in photosensitive materials.
- Data retrieval can be based on storage address or data content.
- Optical correlation offers parallel searching but suffers from noise.
Purpose of the Study:
- To develop a holographic content-addressable data storage system.
- To enhance search fidelity in holographic data retrieval.
- To overcome limitations of noisy analog optical correlation.
Main Methods:
- Implementing data encoding strategies for holographic storage.
- Utilizing signal postprocessing techniques to refine search results.
- Employing optical correlation for simultaneous comparison of queries against stored records.
Main Results:
- Demonstrated a functional holographic content-addressable data storage system.
- Achieved high search fidelity in retrieving digital data.
- Successfully mitigated noise inherent in analog optical correlation processes.
Conclusions:
- Holographic data storage can be effectively content-addressable.
- Advanced data encoding and signal processing are crucial for high-fidelity holographic searches.
- This approach offers a promising solution for efficient and accurate data retrieval from holographic media.
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