Abstract
We extend a serial communications technique, Partial Response (PR) precoding,' to two and three dimensions to increase the capacity and signal separation in parallel readout optical memory systems. We also develop expressions for optimal two-dimensional equalizers that improve signal separation by reshaping reconstructed pixels. We simulate and experimentally verify the performance of various forms of PR precoding in a coherent imaging readout system using twodimensional arrays of binary phase storage pixels. However, the techniques presented here may be applied to other readout systems and other storage values. With an equalizer, PR precoding yields a factor of two improvement in worst case signal separation over a system without precoding.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 331-344 |
| Number of pages | 14 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 2297 |
| DOIs | |
| State | Published - Sep 29 1994 |
| Externally published | Yes |
| Event | Photonics for Processors, Neural Networks, and Memories II 1994 - San Diego, United States Duration: Jul 24 1994 → Jul 29 1994 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering