Method of compensating for pixel migration in volume holographic optical disc (VHOD)

  • Yeh Wei Yu (Contributor)
  • Chih Yuan Cheng (Contributor)
  • Tun-Chien Teng (Contributor)
  • Cheng Hsien Chen (Contributor)
  • S. H. Lin (Contributor)
  • Bo Rong Wu (Creator)
  • Che Chih Hsu (Contributor)
  • Yi Jiun Chen (Contributor)
  • Xuan Hao Lee (Contributor)
  • Chi Yu Wu (Creator)
  • Ching Cherng Sun (Contributor)



Volume holographic optical disc (VHOD) technology is simpler than the angular multiplexing holographic system. However, disc rotation usually causes pixel migration, thus reducing signal quality. This study proposes a special geometrical arrangement to counteract pixel migration. Using paraxial approximation analysis, an optimal geometrical distance ratio, K, is calculated to compensate for pixel migration and improve image quality during disc rotation. The results of approximation analysis are confirmed by both simulation and experimental results.
Date made available2012

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