Apparatus for incoherent/coherent readout and display of information stored in double angularly multiplexed volume holographic optical elements
US6128109A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1997 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Jun 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H1/265
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus is provided for the readout, and in certain applications the display, of information stored within incoherent/coherent double angularly multiplexed volume holographic optical elements. Such multiplexed volume holographic optical elements are based on parallel incoherent/coherent double angularly multiplexed volume holographic recording and readout principles, and are designed to exhibit maximum optical throughput efficiency and minimum crosstalk. Applications for this novel holographic readout apparatus, when used in conjunction with the aforementioned incoherent/coherent double angularly multiplexed volume holographic optical elements, include photonic interconnections for neural networks, telecommunications switching, and digital computing; optical information processors and optical memories; and optical display systems. The holographic readout apparatus is based primarily on the use of a spatially distributed source array, which contains a plurality of optical sources that are at once both individually coherent and mutually incoherent. The incorporation of the incoherent/coherent source array enables embodiments of the apparatus that in turn allow for incoherent superp…
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