Optically reconfigurable gate array with an angle-multiplexed holographic memory

Retsu Moriwaki, Hikaru Maekawa, Akifumi Ogiwara, Minoru Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Optically reconfigurable gate arrays (ORGAs) have been developed to achieve a high-performance FPGA with numerous configuration contexts. In the architecture, an optical memory technology or a holographic memory technology has been introduced so that the architecture can have numerous configuration contexts and high-speed reconfiguration capability. Results show that the architecture can achieve a large virtual gate count that is much larger than those of currently available VLSIs. To date, ORGAs with a spatially multiplex holographic memory have been reported. However, the spatially multiplexed holographic memory can only have a small number of configuration contexts, which are limited to about 256 configuration contexts. To implement more than a million configuration contexts, an angle-multiplex holographic memory must be used. However, no ORGA with an angle multiplex holographic memory that can sufficiently exploit the huge storage capacity of a holographic memory has ever been reported. Therefore, this paper presents a proposal of a novel ORGA with an angle-multiplexed holographic memory. The architecture can open the possibility of providing a million configuration contexts for a multi-context FPGA.

Original languageEnglish
Title of host publicationGLSVLSI 2014 - Proceedings of the 2014 Great Lakes Symposium on VLSI
PublisherAssociation for Computing Machinery
Number of pages5
ISBN (Print)9781450328166
Publication statusPublished - 2014
Externally publishedYes
Event24th Great Lakes Symposium on VLSI, GLSVLSI 2014 - Houston, TX, United States
Duration: May 21 2014May 23 2014

Publication series

NameProceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI


Conference24th Great Lakes Symposium on VLSI, GLSVLSI 2014
Country/TerritoryUnited States
CityHouston, TX


  • field programmable gate arrays
  • holographic memory
  • optically reconfigurable gate arrays

ASJC Scopus subject areas

  • Engineering(all)


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