Data storage on holographic memory card

P. Koppa, G. Erdei, F. Ujhelyi, P. Varhegyi, T. Ujvari, E. Lörincz, G. Szarvas, S. Hvilsted, P. S. Ramanujam, P. Richter

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

1 Citation (Scopus)

Abstract

Our goal is to develop a rewritable holographic memory card system based on thin film polymer media on credit card size plastic carriers. Data is stored in our system in form of polarization holograms that present high efficiency and excellent suppression of higher orders even for thin material. Data is written on the card in a parallel way using spatial light modulators to encode the object beam that is Fourier transformed by a custom objective lens and 'interferes' with the reference beam (of orthogonal polarization) on the card. We use reflective carrier in order to read out the data from the same side of the card. This allows us to have a compact system and standard ID 1 type carrier card. The optical system and the data organization are optimized to have a data density higher than 1bit/μm2. We expect to pass the limit of 10 bit/μm2 with the introduction of phase coded multiplexing that would provide more than 2Gbyte capacity if using half the card area as active surface.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages309-314
Number of pages6
Volume4149
Publication statusPublished - 2000
EventHolography 2000 - ST.olten, Austria
Duration: Jul 10 2000Jul 14 2000

Other

OtherHolography 2000
CityST.olten, Austria
Period7/10/007/14/00

Fingerprint

cards
data storage
Polarization
Data storage equipment
Holograms
Multiplexing
Optical systems
Lenses
Plastics
Thin films
Polymers
polarization
light modulators
multiplexing
plastics
lenses
retarding
polymers
thin films
Spatial light modulators

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Koppa, P., Erdei, G., Ujhelyi, F., Varhegyi, P., Ujvari, T., Lörincz, E., ... Richter, P. (2000). Data storage on holographic memory card. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4149, pp. 309-314). Society of Photo-Optical Instrumentation Engineers.

Data storage on holographic memory card. / Koppa, P.; Erdei, G.; Ujhelyi, F.; Varhegyi, P.; Ujvari, T.; Lörincz, E.; Szarvas, G.; Hvilsted, S.; Ramanujam, P. S.; Richter, P.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4149 Society of Photo-Optical Instrumentation Engineers, 2000. p. 309-314.

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

Koppa, P, Erdei, G, Ujhelyi, F, Varhegyi, P, Ujvari, T, Lörincz, E, Szarvas, G, Hvilsted, S, Ramanujam, PS & Richter, P 2000, Data storage on holographic memory card. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 4149, Society of Photo-Optical Instrumentation Engineers, pp. 309-314, Holography 2000, ST.olten, Austria, 7/10/00.
Koppa P, Erdei G, Ujhelyi F, Varhegyi P, Ujvari T, Lörincz E et al. Data storage on holographic memory card. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4149. Society of Photo-Optical Instrumentation Engineers. 2000. p. 309-314
Koppa, P. ; Erdei, G. ; Ujhelyi, F. ; Varhegyi, P. ; Ujvari, T. ; Lörincz, E. ; Szarvas, G. ; Hvilsted, S. ; Ramanujam, P. S. ; Richter, P. / Data storage on holographic memory card. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4149 Society of Photo-Optical Instrumentation Engineers, 2000. pp. 309-314
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