Paper
16 September 2003 Push pull readout of multilayer optical disc
Jean-Claude Lehureau, Joseph Colineau
Author Affiliations +
Proceedings Volume 5069, Optical Data Storage 2003; (2003) https://doi.org/10.1117/12.532406
Event: Optical Data Storage 2003, 2003, Vancouver, Canada
Abstract
Optical disc readout uses generally the "Central Aperture Readout" method. We show that "Push Pull Readout" can read efficiently very small phase modulation have good transparency and allow the stacking of many layers. We modified the push pull detection by adding a variable transparency in the far field that reduces the interlayer crosstalk, the system has potential for Terabyte capacity. We have realized a 8 layer DVD like optical disc and demonstrated that Push Pull Readout gives sufficient signal even on highly transparent disc.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jean-Claude Lehureau and Joseph Colineau "Push pull readout of multilayer optical disc", Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003); https://doi.org/10.1117/12.532406
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KEYWORDS
Optical discs

Sensors

Digital video discs

Transparency

Phase shifts

Modulation

Interference (communication)

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