Top illuminator design for 2-D parallel readout in a 3-D multilayer optical data storage system

Wenyi Feng, Edwin P. Walker, Haichuan Zhang, Yi Zhang, Alexander S. Dvornikov, Sadik Esener

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


To achieve very high data rates in 3-D multilayer optical data storage systems, a novel approach is investigated to read out in parallel multiple tracks at different layers simultaneously. Data bits at different layers are arranged as titled data pages inside the disk. A uniform optical beam sheet is generated to illuminate the desired data page from the top of the disk, and a depth transfer imaging system is used to collect the fluorescence of the written bits within the data page to a detector array. The performance of the illumination optics has been experimentally evaluated and optimized by aberration compensation and equalization of irradiance distribution on the entire data page. Other important factors including reflection loss, sensitivity to disk quality, and servo requirements of disk wobbling are analyzed.

Original languageEnglish (US)
Pages (from-to)334-343
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2001
Externally publishedYes
EventPhotorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applicationsn VII, and Optical Data Storage - San Diego, CA, United States
Duration: Jul 29 2001Jul 31 2001


  • Illumination optics
  • Multilayer data storage
  • Parallel readout
  • Two-photon

ASJC Scopus subject areas

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


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