Advanced channel modeling of holographic data storage considering degradation shapes of reconstructed image

Kyungchan Son, Sung Yong Lim, Hyun Seok Yang

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

Abstract

Page-based holographic data storage (HDS) is very sensitive to disturbances such as tilt and media positioning because of extremely high density of HDS. As a result, reconstructed images are also affected by disturbances, which is represented as degradation of image and signal-to-noise ratio (SNR). Therefore, it is important to detect and compensate the disturbances of HDS. In order to detect and compensate the disturbances, there have been many researches using degradation shapes of reconstructed image. However, it is hard to obtain and analyze the degradation shapes because complex and iterative experiments are required. Furthermore, experiments also have to be done for applying detection and compensation algorithms. Because of inefficiency of experiments, channel model of HDS which can model degradation shapes with respect to disturbances is important. Channel model can reduce the number of experiment and improve efficiency of research. In previous research, channel model of holographic data storage was proposed, but detailed description of the mathematical model and degradation shapes with respect to disturbances direction and amplitude were not modeled. In this paper, advanced channel model which is possible to model degradation shapes is proposed. Proposed channel model considers three causes which effect to media positioning and tilt: Bragg mismatch, imperfect phase conjugation, and media deformation due to temperature. In order to represent degradation of diffraction efficiency caused by Bragg mismatch and media deformation, k-sphere model whose vector concept is expanded to field to use in overall data page with each signal vectors revised by Rodrigues rotation formula is applied.

Original languageEnglish
Title of host publicationPractical Holography XXXI
Subtitle of host publicationMaterials and Applications
EditorsHans I. Bjelkhagen, V. Michael Bove
PublisherSPIE
Volume10127
ISBN (Electronic)9781510606951
DOIs
Publication statusPublished - 2017 Jan 1
EventSPIE Conference on Practical Holography XXXI: Materials and Applications - San Francisco, United States
Duration: 2017 Jan 302017 Feb 1

Other

OtherSPIE Conference on Practical Holography XXXI: Materials and Applications
CountryUnited States
CitySan Francisco
Period17/1/3017/2/1

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Son, K., Lim, S. Y., & Yang, H. S. (2017). Advanced channel modeling of holographic data storage considering degradation shapes of reconstructed image. In H. I. Bjelkhagen, & V. M. Bove (Eds.), Practical Holography XXXI: Materials and Applications (Vol. 10127). [101270U] SPIE. https://doi.org/10.1117/12.2250264